This is a w3c Schema "Technical Implementation" of the DDI Conceptual Specification.
This schema is intended for use in producing electronic versions of codebooks for quantitative social science data.
CVS Revision information: $Header: /cvsroot/ddi-alliance/ddi/w3c/Version2-1.xsd,v 1.3 2005/08/08 19:40:34 wesker1972 Exp $
An unformatted summary describing the purpose,
nature, and scope of the data collection, special characteristics of its
contents, major subject areas covered, and what questions the PIs attempted
to answer when they conducted the study. A listing of major variables in the
study is important here. In cases where a codebook contains more than one
abstract (for example, one might be supplied by the data producer and
another prepared by the data archive where the data are deposited), the
"source" and "date" attributes may be used to distinguish the abstract
versions. Maps to Dublin Core Description element. Inclusion of this element
in the codebook is recommended. The "date" attribute should follow ISO
convention of YYYY-MM-DD.
Data on labor force activity for the week prior
to the survey are supplied in this collection. Information is available on the employment status,
occupation, and industry of persons 15 years old and over. Demographic variables such as age, sex,
race, marital status, veteran status, household relationship, educational background, and Hispanic
origin are included. In addition to providing these core data, the May survey also contains a supplement
on work schedules for all applicable persons aged 15 years and older who were employed at the time of
the survey. This supplement focuses on shift work, flexible hours, and work at home for both main and
second jobs. ]]>
Location where the data collection is currently
stored. Use the URI attribute to provide a URN or URL for the storage site
or the actual address from which the data may be downloaded.
Summary of actions taken to minimize data loss.
Includes information on actions such as follow-up visits, supervisory
checks, historical matching, estimation, etc.
To minimize the number of unresolved cases and reduce the potential nonresponse bias,
four follow-up contacts were made with agencies that had not responded by various stages of the data
collection process.]]>
A title by which the work is commonly referred,
or an abbreviation of the title.
Information on data appraisal.
Basic unit of analysis or observation that the
file describes: individuals, families/households, groups,
institutions/organizations, administrative units, etc. The "unit" attribute
is included to permit the development of a controlled vocabulary for this element.
individuals
]]>
Provides information regarding whom or what the
variable/nCube describes.
This variable reports election returns at the constituency level.
Household
]]>
The person, corporate body, or agency responsible for the work's
substantive and intellectual content. Repeat the element for each
author, and use "affiliation" attribute if available. Invert first and
last name and use commas. Author of data collection (2.1.2.1) maps to
Dublin Core Creator element. Inclusion of this element in codebook is
recommended.
The "author" in the Document Description should be the individual(s)
or organization(s) directly responsible for the intellectual content of
the DDI version, as distinct from the person(s) or organization(s)
responsible for the intellectual content of the earlier paper or
electronic edition from which the DDI edition may have been derived.
United States Department of Commerce. Bureau of the Census
Rabier, Jacques-Rene
]]>
Statement of collection availability. An archive
may need to indicate that a collection is unavailable because it is
embargoed for a period of time, because it has been superseded, because a
new edition is imminent, etc. It is anticipated that a controlled vocabulary
will be developed for this element.
This collection is superseded by CENSUS OF POPULATION, 1880 [UNITED STATES]: PUBLIC
USE SAMPLE (ICPSR 6460). ]]>
Contains a reference to IDs of possible
preceding questions. The "qstn" IDREFS may be used to specify the question IDs.
For responses on a similar topic, see questions
12-15.
]]>
Complete bibliographic reference containing all
of the standard elements of a citation that can be used to cite the work.
The "format" attribute is provided to enable specification of the particular
citation style used, e.g., APA, MLA, Chicago, etc.
Rabier, Jacques-Rene, and Ronald Inglehart. EURO-BAROMETER 11: YEAR OF
THE CHILD IN EUROPE, APRIL 1979 [Codebook file]. Conducted by Institut Francais D'Opinion Publique
(IFOP), Paris, et al. ICPSR ed. Ann Arbor, MI: Inter-university Consortium for Political and Social
Resarch [producer and distributor], 1981. ]]>
This field allows the creation of multiple polygons to describe in a
more detailed manner the geographic area covered by the dataset. It
should only be used to define the outer boundaries of a covered area.
For example, in the United States, such polygons can be created to
define boundaries for Hawaii, Alaska, and the continental United States,
but not interior boundaries for the contiguous states. This field is
used to refine a coordinate-based search, not to actually map an area.
If the boundPoly element is used, then geoBndBox MUST be present, and
all points enclosed by the boundPoly MUST be contained within the
geoBndBox. Elements westBL, eastBL, southBL, and northBL of the
geoBndBox should each be represented in at least one point of the
boundPoly description.
Nevada State
42.002207-120.005729004
42.002207-114.039663
35.9-114.039663
36.080-114.544
35.133-114.542
35.00208499998-114.63288
35.00208499998-114.63323
38.999-120.005729004
42.002207-120.005729004
Norway
80.7641633.637497
80.7641610.2
62.483954.789583
57.9879154.789583
57.98791511.8
61.2779413.2336
63.1901213.2336
67.2861517.24580
68.1429721.38362
68.1429725.50054
69.3968527.38137
68.7699128.84424
68.7699131.31021
71.4231.31021
71.4233.637497
80.7641633.637497
]]>
Number of cases or observations.
1011
]]>
May include frequencies, percentages, or
crosstabulation results. This field can contain one of the following: 1.
textual information (e.g., PCDATA), or 2. non-parseable character data
(e.g., the statistics), or 3. some other form of external information
(table, image, etc.) In case 1, the tag can be used to mark up character
data; tables can also be included in the actual markup. In cases 2 or 3, the
element can be left empty and the "URI" attribute used to refer to the
external object containing the information. The attribute "type" indicates
the type of statistics presented - frequency, percent, or crosstabulation.
256
]]>
The explicit response.
9
]]>
Used to describe the levels of the category hierarchy.
Note that we do not indicate nesting levels or roll-up
structures here. This is done to be able to support ragged
hierarchies.
]]>
A description of a particular response.
The attribute "missing" indicates whether this category group contains missing
data or not.
The attribute "missType" is used to specify the type of missing
data, e.g., inap., don't know, no answer, etc.
The attribute "country" allows for the denotation of country-specific category values.
The "sdatrefs" attribute records the ID values of all elements within the
summary data decription that apply to this category.
The exclusiveness attribute ("excls") should be set to "false" if the category can appear in
more than one place in the classification hierarchy.
The attribute "catgry" is an IDREF referencing any child categories of this category element.
Used to capture nested hierarchies of categories.
The attribute "level" is an IDREF referencing the catLevel ID in which this category exists.
0
Management, professional and related occupations
01
Management occupations
011
Top executives
012
Financial managers
]]>
A description of response categories that might
be grouped together. The attribute "missing" indicates whether this category
group contains missing data or not. The attribute "missType" is used to
specify the type of missing data, e.g., inap., don't know, no answer, etc.
The attribute catGrp is used to indicate all the subsidiary category groups
which nest underneath the current category group. This allows for the
encoding of a hierarchical structure of category groups. The "levelno"
attribute allows the addition of a level number, and "levelnm" allows the
addition of a level name to the category group. The completeness attribute
("compl") should be set to "false" if the category group is incomplete (not
a complete aggregate of all sub-nodes or children). The exclusiveness
attribute ("excls") should be set to "false" if the category group can
appear in more than one place in the classification hierarchy.
Text of requirement that a data collection
should be cited properly in articles or other publications that are based on
analysis of the data.
Publications based on ICPSR data collections should acknowledge those sources by
means of bibliographic citations. To ensure that such source attributions are captured for social
science bibliographic utilities, citations must appear in footnotes or in the reference section of
publications. ]]>
This element encodes the bibliographic information for the work at
the level specified: (1) Document Description, Citation (of Marked-up
Document), (2) Document Description, Citation (of Marked-up Document
Source), (3) Study Description, Citation (of Study), (4) Study
Description, Other Material, and (5) Other Material for the study
itself. Bibliographic information includes title information, statement
of responsibility, production and distribution information, series and
version information, text of a preferred bibliographic citation, and
notes (if any).
A MARCURI attribute is provided to link to the MARC record for the citation.
Methods used to "clean" the data collection,
e.g., consistency checking, wildcode checking, etc. The "agency" attribute
permits specification of the agency doing the data cleaning.
Checks for undocumented codes were performed, and data were subsequently revised
in consultation with the principal investigator. ]]>
Any special instructions to those who converted
information from one form to another for a particular variable. This might
include the reordering of numeric information into another form or the
conversion of textual information into numeric information.
Use the standard classification tables to present responses to the question:
What is your occupation? into numeric codes.
]]>
Every element in the DDI DTD/Schema has the following attributes:
ID - This uniquely identifies each element.
xml-lang - Use of this attribute is deprecated, and it will no longer
be supported in the next major version of the DDI specification. For
newly created XML documents, please use xml:lang.
xml:lang - This attribute specifies the language used in the contents
and attribute values of any element in the XML document. Use of ISO
(www.iso.org) language
codes is recommended.
source - This attribute identifies the source that provided
information in the element. If the documentation contains two differing
sets of information on Sampling Procedure -- one provided by the data
producer and one by the archive where the data is deposited -- this
information can be distinguished through the use of the source attribute.
Note also that the DDI contains a linking mechanism permitting
arbitrary links between internal elements (Link)
and from internal elements to external sources (ExtLink).
The top-level element, codeBook (0.0) also includes a version
attribute to specify the version number of the DDI specification.
Mention of formatting elements: p, emph, list, itm, etc.???
The element cohort is used when the nCube
contains a limited number of categories from a particular variable, as
opposed to the full range of categories. The attribute "catRef" is an IDREF
to the actual category being used. The attribute "value" indicates the
actual value attached to the category that is being used.
]]>
Contains the date(s) when the data were
collected. Use the event attribute to specify "start", "end", or "single"
for each date entered. The ISO standard for dates (YYYY-MM-DD) is
recommended for use with the "date" attribute. The "cycle" attribute permits
specification of the relevant cycle, wave, or round of data. Maps to Dublin
Core Coverage element. Inclusion of this element in the codebook is recommended.
10 November 1998
]]>
The method used to collect the data;
instrumentation characteristics.
telephone interviews
face-to-face interviews
mail questionnaires
computer-aided telephone interviews (CATI) ]]>
Description of noteworthy aspects of the data
collection situation. Includes information on factors such as
cooperativeness of respondents, duration of interviews, number of
call-backs, etc.
There were 1,194 respondents who answered questions in face-to-face interviews
lasting approximately 75 minutes each.
]]>
Summarizes the number of physical files that
exist in a collection, recording the number of files that contain data and
noting whether the collection contains machine-readable documentation and/or
other supplementary files and information such as data dictionaries, data
definition statements, or data collection instruments.
1 data file + machine-readable documentation (PDF) + SAS data definition statements
]]>
This item indicates the relationship of the data
collected to the amount of data coded and stored in the data collection.
Information as to why certain items of collected information were not
included in the data file stored by the archive should be provided.
Because of embargo provisions, data values for some variables have been masked. Users
should consult the data definition statements to see which variables are under embargo. A new version
of the collection will be released by ICPSR after embargoes are lifted. ]]>
The general subject to which the parent element
may be seen as pertaining. This element serves the same purpose as the
keywords and topic classification elements, but at the data description
level. The "vocab" attribute is provided to indicate the controlled
vocabulary, if any, used in the element, e.g., LCSH (Library of Congress
Subject Headings), MeSH (Medical Subject Headings), etc. The "vocabURI"
attribute specifies the location for the full controlled vocabulary.
Income
more experience
Income
SF: 311-312 draft horses
]]>
Indicates any additional information that will
assist the user in understanding the access and use conditions of the data
collection.
The data are available without restriction. Potential users of these datasets
are advised, however, to contact the original principal investigator Dr. J. Smith (Institute for
Social Research, The University of Michigan, Box 1248, Ann Arbor, MI 48106), about their intended
uses of the data. Dr. Smith would also appreciate receiving copies of reports based on the datasets.
]]>
This element is used to determine if signing of
a confidentiality declaration is needed to access a resource. The "required"
attribute is used to aid machine processing of this element, and the default
specification is "yes". The "formNo" attribute indicates the number or ID of
the form that the user must fill out. The "URI" attribute may be used to
provide a URN or URL for online access to a confidentiality declaration
form.
To download this dataset, the user must sign a declaration of confidentiality.
To obtain this dataset, the user
must complete a Restricted Data Use Agreement. ]]>
Names and addresses of individuals responsible
for the work. Individuals listed as contact persons will be used as resource
persons regarding problems or questions raised by the user community. The
URI attribute should be used to indicate a URN or URL for the homepage of
the contact individual. The email attribute is used to indicate an email
address for the contact individual.
Jane Smith ]]>
Methods to facilitate data control performed by
the primary investigator or by the data archive. Specify any special
programs used for such operations. The "agency" attribute maybe used to
refer to the agency that performed the control operation.
Ten percent of data entry forms were reentered to check for accuracy. ]]>
Copyright statement for the work at the
appropriate level. Copyright for data collection (2.1.3.2) maps to Dublin
Core Rights. Inclusion of this element is recommended element.
Copyright(c) ICPSR, 2000 ]]>
This is an empty element containing only the
attributes listed below. It is used to identify the coordinates of the data
item within a logical nCube describing aggregate data. CubeCoord is repeated
for each dimension of the nCube giving the coordinate number ("coordNo") and
coordinate value ("coordVal"). Coordinate value reference ("cordValRef") is
an ID reference to the variable that carries the coordinate value. The
attributes provide a complete coordinate location of a cell within the nCube.
]]>
This section describes access conditions and
terms of use for the data collection. In cases where access conditions
differ across individual files or variables, multiple access conditions can
be specified. The access conditions applying to a study, file, variable
group, or variable can be indicated by an IDREF attribute on the study,
file, variable group, or variable elements called "access".
Other issues pertaining to data appraisal.
Describe here issues such as response variance, nonresponse rate and testing
for bias, interviewer and response bias, confidence levels, question bias,
etc.
These data files were obtained from the United States House of Representatives, who
received them from the Census Bureau accompanied by the following caveats: "The numbers contained herein
are not official 1990 decennial Census counts. The numbers represent estimates of the population based on
a statistical adjustment method applied to the official 1990 Census figures using a sample survey intended
to measure overcount or undercount in the Census results. On July 15, 1991, the Secretary of Commerce
decided not to adjust the official 1990 decennial Census counts (see 56 Fed. Reg. 33582, July 22, 1991).
In reaching his decision, the Secretary determined that there was not sufficient evidence that the
adjustment method accurately distributed the population across and within states. The numbers contained
in these tapes, which had to be produced prior to the Secretary's decision, are now known to be biased.
Moreover, the tapes do not satisfy standards for the publication of Federal statistics, as established
in Statistical Policy Directive No. 2, 1978, Office of Federal Statistical Policy and Standards.
Accordingly, the Department of Commerce deems that these numbers cannot be used for any purpose that
legally requires use of data from the decennial Census and assumes no responsibility for the accuracy
of the data for any purpose whatsoever. The Department will provide no assistance in interpretation or
use of these numbers." ]]>
Indicate here, at the file level, the types of
checks and operations performed on the data file. A controlled vocabulary
may be developed for this element in the future. The following examples are
based on ICPSR's Extent of Processing scheme:
The archive produced a codebook for this collection.
Consistency checks were performed by Data Producer/ Principal Investigator.
Consistency checks performed by the archive.
The archive generated SAS and/or SPSS data definition statements for this collection.
Frequencies were provided by Data Producer/Principal Investigator.
Frequencies provided by the archive.
Missing data codes were standardized by Data Producer/ Principal Investigator.
Missing data codes were standardized by the archive.
The archive performed recodes and/or calculated derived variables.
Data were reformatted by the archive.
Checks for undocumented codes were performed by Data Producer/Principal Investigator.
Checks for undocumented codes were performed by the archive.
]]>
Information about the methodology employed in a
data collection.
The entity (individual, agency, or institution)
responsible for administering the questionnaire or interview or compiling
the data. This refers to the entity collecting the data, not to the entity
producing the documentation. Attribute "abbr" may be used to list common
abbreviations given to agencies, etc. Attribute "affiliation" may be used to
record affiliation of the data collector.
Survey Research Center]]>
Description of variables.
Identifies a physical storage location for an
individual data entry, serving as a link between the physical location and
the logical content description of each data item. The attribute "varRef" is
an IDREF that points to a discrete variable description. If the data item is
located within an nCube (aggregate data), use the attribute "nCubeRef"
(IDREF) to point to the appropriate nCube and the element CubeCoord to
identify the coordinates of the data item within the nCube.
The type of data included in the file: survey
data, census/enumeration data, aggregate data, clinical data,
event/transaction data, program source code, machine-readable text,
administrative records data, experimental data, psychological test, textual
data, coded textual, coded documents, time budget diaries, observation
data/ratings, process-produced data, etc. This element maps to Dublin Core
Type element.
survey data]]>
This element can be used to give general
information about missing data, e.g., that missing data have been
standardized across the collection, missing data are present because of
merging, etc.
Missing data are represented by blanks.
The codes "-1" and "-2" are used to represent missing data.
]]>
Used to list the book(s), article(s), serial(s),
and/or machine-readable data file(s)--if any--that served as the source(s)
of the data collection.
"Voting Scores." CONGRESSIONAL QUARTERLY ALMANAC 33 (1977), 487-498.
United States Internal Revenue Service Quarterly Payroll File
]]>
Rationale for why the group was constituted in
this way.
The following eight variables were only asked in Ghana.
The following four nCubes form a single presentation table.]]>
The date that the work was deposited with the
archive that originally received it. The ISO standard for dates (YYYY-MM-DD)
is recommended for use with the "date" attribute.
January 25, 1999 ]]>
Information regarding user responsibility for
informing archives of their use of data through providing citations to the
published work or providing copies of the manuscripts.
To provide funding agencies with essential information about use of archival resources
and to facilitate the exchange of information about ICPSR participants' research activities, users of
ICPSR data are requested to send to ICPSR bibliographic citations for, or copies of, each completed
manuscript or thesis abstract. Please indicate in a cover letter which data were used. ]]>
The name of the person (or institution) who
provided this work to the archive storing it.
Bureau of Justice Statistics
]]>
Used only in the case of a derived variable,
this element provides both a description of how the derivation was performed
and the command used to generate the derived variable, as well as a
specification of the other variables in the study used to generate the
derivation. The "var" attribute provides the ID values of the other
variables in the study used to generate this derived variable.
Information indicating correspondence as well as
discrepancies between the sampled units (obtained) and available statistics
for the population (age, sex-ratio, marital status, etc.) as a whole.
The suitability of Ohio as a research site reflected its similarity to the United States
as a whole. The evidence extended by Tuchfarber (1988) shows that Ohio is representative of the United
States in several ways: percent urban and rural, percent of the population that is African American,
median age, per capita income, percent living below the poverty level, and unemployment rate. Although
results generated from an Ohio sample are not empirically generalizable to the United States, they may
be suggestive of what might be expected nationally. ]]>
Dimensions of the overall file.
Information regarding responsibility for uses of
the data collection.
The original collector of the data, ICPSR, and the relevant funding agency bear
no responsibility for uses of this collection or for interpretations or inferences based upon such
uses. ]]>
Date that the work was made available for
distribution/presentation. The ISO standard for dates (YYYY-MM-DD) is
recommended for use with the "date" attribute.
January 25, 1999 ]]>
Distribution statement for the work at the
appropriate level: marked-up document; marked-up document source; study;
study description, other material; other material for study.
The organization designated by the author or
producer to generate copies of the particular work including any necessary
editions or revisions. Names and addresses may be specified and other
archives may be co-distributors. A URI attribute is included to provide an
URN or URL to the ordering service or download facility on a Web site.
Ann Arbor, MI: Inter-university Consortium for
Political and Social Research ]]>
Formatting element: marks a subdivision in a text.
This element defines a variable as a dimension
of the nCube, and should be repeated to describe each of the cube's
dimensions. The attribute "rank" is used to define the coordinate order
(rank="1", rank="2", etc.) The attribute "varRef" is an IDREF that points to
the variable that makes up this dimension of the nCube.
The Document Description consists of
bibliographic information describing the DDI-compliant document itself as a
whole. This Document Description can be considered the wrapper or header
whose elements uniquely describe the full contents of the compliant DDI
file. Since the Document Description section is used to identify the
DDI-compliant file within an electronic resource discovery environment, this
section should be as complete as possible. The author in the Document
Description should be the individual(s) or organization(s) directly
responsible for the intellectual content of the DDI version, as distinct
from the person(s) or organization(s) responsible for the intellectual
content of the earlier paper or electronic edition from which the DDI
edition may have been derived. The producer in the Document Description
should be the agency or person that prepared the marked-up document. Note
that the Document Description section contains a Documentation Source
subsection consisting of information about the source of the DDI-compliant
file-- that is, the hardcopy or electronic codebook that served as the
source for the marked-up codebook. These sections allow the creator of the
DDI file to produce version, responsibility, and other descriptions relating
to both the creation of that DDI file as a separate and reformatted version
of source materials (either print or electronic) and the original source
materials themselves.
Citation for the source document. This element
encodes the bibliographic information describing the source codebook,
including title information, statement of responsibility, production and
distribution information, series and version information, text of a
preferred bibliographic citation, and notes (if any). Information for this
section should be taken directly from the source document whenever possible.
If additional information is obtained and entered in the elements within
this section, the source of this information should be noted in the source
attribute of the particular element tag. A MARCURI attribute is provided to
link to the MARC record for this citation.
Use this field to indicate if the documentation
is being presented/distributed before it has been finalized. Some data
producers and social science data archives employ data processing strategies
that provide for release of data and documentation at various stages of
processing.
This marked-up document includes a provisional data dictionary and brief citation
only for the purpose of providing basic access to the data file. A complete codebook will be published
at a later date. ]]>
The actual command used to generate the derived
variable. The "syntax" attribute is used to indicate the command language
employed (e.g., SPSS, SAS, Fortran, etc.)
RECODE V1 TO V3 (0=1) (1=0) (2=-1) INTO DEFENSE WELFARE
HEALTH.
]]>
A textual description of the way in which this
variable was derived.
VAR215.01 "Outcome of first pregnancy" (1988 NSFG=VAR611 PREGOUT1)
If R has never been pregnant (VAR203 PREGNUM EQ 0) then OUTCOM01 is blank/inapplicable. Else, OUTCOM01
is transferred from VAR225 OUTCOME for R's 1st pregnancy.
]]>
The easternmost coordinate delimiting the
geographic extent of the dataset. A valid range of values, expressed in
decimal degrees (positive east and positive north), is: -180,0 <=
East Bounding Longitude Value <= 180,0
Provides information on variables/nCubes which are not currently
available because of policies established by the principal investigators
and/or data producers. The ISO standard for dates (YYYY-MM-DD) is
recommended for use with the "date" attribute. An "event" attribute is
provided to specify "notBefore" or "notAfter" ("notBefore" is the
default). A "format" attribute is provided to ensure that this
information will be machine-processable, and specifies a format for the
embargo element.
The "format" attribute could be used to specify other conventions for
the way that information within the embargo element is set out, if
conventions for encoding embargo information were established in the
future.
The data associated with this variable/nCube
will not become available until September 30, 2001, because of embargo provisions established by the
data producers.
]]>
Formatting element: marks words or phrases that
are emphasized for rhetorical effect.
Measure of how precisely one can estimate a
population value from a given sample.
To assist NES analysts, the PC SUDAAN program was used to compute sampling errors for
a wide-ranging example set of proportions estimated from the 1996 NES Pre-election Survey dataset. For each
estimate, sampling errors were computed for the total sample and for twenty demographic and political
affiliation subclasses of the 1996 NES Pre-election Survey sample. The results of these sampling error
computations were then summarized and translated into the general usage sampling error table provided in
Table 11. The mean value of deft, the square root of the design effect, was found to be 1.346. The design
effect was primarily due to weighting effects (Kish, 1965) and did not vary significantly by subclass size.
Therefore the generalized variance table is produced by multiplying the simple random sampling standard error
for each proportion and sample size by the average deft for the set of sampling error computations. ]]>
This element permits encoders to provide links
from any arbitrary element containing ExtLink as a subelement to electronic
resources outside the codebook.
Abstract or description of the file. A summary
describing the purpose, nature, and scope of the data file, special
characteristics of its contents, major subject areas covered, and what
questions the PIs attempted to answer when they created the file. A listing
of major variables in the file is important here. In the case of multi-file
collections, this uniquely describes the contents of each file.
Part 1 contains both edited and constructed variables describing demographic and
family relationships, income, disability, employment, health insurance status, and utilization data
for all of 1987.
]]>
Information about the data file(s) that comprises a collection. This
section can be repeated for collections with multiple files.
The "URI" attribute may be a URN or a URL that can be used to
retrieve the file. The "sdatrefs" are summary data description
references that record the ID values of all elements within the summary
data description section of the Study Description that might apply to
the file. These elements include: time period covered, date of
collection, nation or country, geographic coverage, geographic unit,
unit of analysis, universe, and kind of data. The "methrefs" are
methodology and processing references that record the ID values of all
elements within the study methodology and processing section of the
Study Description that might apply to the file. These elements include
information on data collection and data appraisal (e.g., sampling,
sources, weighting, data cleaning, response rates, and sampling error
estimates). The "pubrefs" attribute provides a link to
publication/citation references and records the ID values of all
citations elements within Other Study Description Materials or Other
Study-Related Materials that pertain to this file. "Access" records the
ID values of all elements in the Data Access section that describe
access conditions for this file.
Remarks: When a codebook documents two different physical
instantiations of a data file, e.g., logical record length (or OSIRIS)
and card-image version, the Data File Description should be repeated to
describe the two separate files. An ID should be assigned to each file
so that in the Variable section the location of each variable on the two
files can be distinguished using the unique file IDs.
]]>
Contains a short title that will be used to
distinguish a particular file/part from other files/parts in the data
collection.
Second-Generation Children Data
]]>
Indicates whether the file was produced at an
archive or produced elsewhere.
Washington, DC: United States Department of Commerce, Bureau of the Census
]]>
Total number of physical files associated with a collection.
5 files
]]>
Type of file structure. The attribute "type" is
used to indicate hierarchical, rectangular, relational, or nested (the
default is rectangular). If the file is rectangular, the next relevant
element is File Dimensions.
Information about the data file.
Types of data files include raw data (ASCII,
EBCDIC, etc.) and software-dependent files such as SAS datasets, SPSS export
files, etc. If the data are of mixed types (e.g., ASCII and packed decimal),
state that here. Note that the element varFormat permits specification of
the data format at the variable level. The "charset" attribute allows one to
specify the character set used in the file, e.g., US-ASCII, EBCDIC, UNICODE
UTF-8, etc.
ASCII data file
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Physical format of the data file: Logical record
length format, card-image format (i.e., data with multiple records per
case), delimited format, free format, etc.
comma-delimited
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Contains a reference to IDs of possible
following questions. The "qstn" IDREFS may be used to specify the question IDs.
If yes, please ask questions 120-124.
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For data collected at more than one point in
time, the frequency with which the data were collected. The "freq" attribute
is included to permit the development of a controlled vocabulary for this
element.
monthly
quarterly ]]>
The source(s) of funds for production of the
work. If different funding agencies sponsored different stages of the
production process, use the "role" attribute to distinguish them.
National Science Foundation
Sun Microsystems ]]>
The fundamental geometric description for any
dataset that models geography. GeoBndBox is the minimum box, defined by west
and east longitudes and north and south latitudes, that includes the largest
geographic extent of the dataset's geographic coverage. This element is used
in the first pass of a coordinate-based search. If the boundPoly element is
included, then the geoBndBox element MUST be included.
Nevada State
-120.005729004
-114.039663
35.00208499998
42.002207
Norway
4.789583
33.637497
57.987915
80.76416
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This element is used to point, using a "URI"
attribute, to an external map that displays the geography in question. The
"levelno" attribute indicates the level of the geographic hierarchy relayed
in the map. The "mapformat" attribute indicates the format of the map.
Information on the geographic coverage of the
data. Includes the total geographic scope of the data, and any additional
levels of geographic coding provided in the variables. Maps to Dublin Core
Coverage element. Inclusion of this element in the codebook is recommended.
State of California
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Lowest level of geographic aggregation covered
by the data.
state
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The grant/contract number of the project that
sponsored the effort. If more than one, indicate the appropriate agency
using the "agency" attribute. If different funding agencies sponsored
different stages of the production process, use the "role" attribute to
distinguish the grant numbers.
J-LEAA-018-77 ]]>
Latitude (y coordinate) of a point. Valid range
expressed in decimal degrees is as follows: -90,0 to 90,0 degrees (latitude)
Longitude (x coordinate) of a point. Valid range
expressed in decimal degrees is as follows: -180,0 to 180,0 degrees (longitude)
List of terms and definitions used in the
documentation. Provided to assist users in using the document correctly.
This element was intended to reflect the section in OSIRIS codebooks that
assisted users in reading and interpreting a codebook. Each OSIRIS codebook
contained a sample codebook page that defined the codebook conventions.
Formatting element: marks off a heading to a
division, list, etc.
Formatting element: marks a word or phrase as
graphically distinct from the surrounding text, while making no claim for
the reasons.
Information concerning either the physical or
electronic holdings of the cited work. Attributes include: location--The
physical location where a copy is held; callno--The call number for a work
at the location specified; and URI--A URN or URL for accessing the
electronic copy of the cited work.
Marked-up Codebook for Current Population Survey, 1999: Annual Demographic File
Codebook for Current Population Survey, 1999: Annual Demographic File ]]>
Unique string or number (producer's or archive's
number). An "agency" attribute is supplied. Identification Number of data
collection maps to Dublin Core Identifier element.
6678
2010 ]]>
According to the Statistical Terminology
glossary maintained by the National Science Foundation, this is "the process
by which one estimates missing values for items that a survey respondent
failed to provide," and if applicable in this context, it refers to the type
of procedure used. When applied to an nCube, imputation takes into
consideration all of the dimensions that are part of that nCube.
This variable contains values that were derived by substitution.
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Values for a particular variable that represent
missing data, not applicable responses, etc.
98 DK
99 Inappropriate
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The counterpart to Range; used to encode
individual values. This is an empty element consisting only of its
attributes. The "UNITS" attribute permits the specification of integer/real
numbers. The "VALUE" attribute specifies the actual value.