Volume 58 - Number 3 - Fall 1992

T. Machine-Readable Data Files (MRDF)

References to data of demographic interest that are stored in machine-readable form. All MRDFs coded under this heading are cross-referenced to specific subject categories as appropriate. Articles concerned with the availability of MRDFs are also included.

58:30826 United Nations. Economic and Social Commission for Asia and the Pacific [ESCAP] (Bangkok, Thailand). How to compute and analyse vital rates from demographic surveys using standard computer software. Asian Population Studies Series, No. 107, Pub. Order No. ST/ESCAP/1085. 1991. ix, 71 pp. Bangkok, Thailand. In Eng.
"The purpose of this manual is to explain the use of standard microcomputer software for computing and analyzing fertility and mortality rates from birth histories collected in demographic surveys, using a common tabulation package and a spreadsheet."
Correspondence: U.N. Economic and Social Commission for Asia and the Pacific, United Nations Building, Rajdamnern Nok Avenue, Bangkok 10200, Thailand. Location: Princeton University Library (SPR).

58:30827 United States. Bureau of the Census (Washington, D.C.). Census of population and housing, 1990: Summary Tape File 2 (Puerto Rico) [MRDF]. 1992. Washington, D.C. In Eng.
"Summary Tape File 2 (STF 2) for Puerto Rico contains 100-percent data. Population counts include persons; families; households; sex; sex by age...; group quarters...; marital status...; household size and household type; and household type and relationship tabulated for all persons....Summary Tape File 2 for Puerto Rico is released in two files--2A and 2B. The record layout is identical for both files, but the geographic coverage differs....STF 2A provides data for census tracts/block numbering areas (BNA's)...in a geographic hierarchy of municipio-place of 10,000 or more inhabitants;--census tract/BNA....STF 2B is an inventory-type file...rather than hierarchical in structure. Data are presented for Puerto Rico; its municipios; metropolitan areas; urbanized areas; barrios-pueblo and barrios, subbarrios, and places of 1,000 or more inhabitants; and summary geographic areas....STF 2 data files for Puerto Rico have a logical record size of 25,692 characters divided into four record segments of 6,423 characters each. The first 300 characters of each segment contain geographic information....Options include IBM 3480-compatible tape cartridge or 9 track tape reel, 6250 or 1600 bpi, ASCII or EBCDIC, labeled or unlabeled."
For information on Summary Tape File 1, see 57:40798.
Correspondence: U.S. Bureau of the Census, Customer Services, Washington, D.C. 20233. Source: U.S. Bureau of the Census, Data User Services Division, Data Developments, No. XV-26, Apr 1992.

58:30828 United States. Bureau of the Census (Washington, D.C.). Census of population and housing, 1990: Summary Tape File 2 (Virgin Islands of the United States) [MRDF]. 1992. Washington, D.C. In Eng.
"Summary Tape File 2 (STF 2) for the [U.S.] Virgin Islands contains Stateside 100-percent equivalent data. There are both A and B records....Population items in the A record include counts of persons by race..., Hispanic origin..., and group quarters....Population counts in the B record include persons; families; households; sex; sex by age...; sex by marital status by age...; household size and household type; and household type and relationship....Both A and B records on STF 2 data files have a logical record size of 11,700 characters each, and each record is divided into 2 record segments of 5,850 characters. The first 300 characters of each segment contain geographic information....Options include 6250 or 1600 bpi, ASCII or EBCDIC, labeled or unlabeled. The files are also available on tape cartridges (IBM 3480 compatible) for the same price. The minimum charge for a computer tape or tape cartridge order is [U.S.] $175. A copy of the technical documentation is included with each order."
For information on Summary Tape File 1, see 58:10812.
Correspondence: U.S. Bureau of the Census, Customer Services, Washington, D.C. 20233. Source: U.S. Bureau of the Census, Data User Services Division, Data Developments, No. XV-31, May 1992.

58:30829 United States. Bureau of the Census (Washington, D.C.). Census of population and housing, 1990: Summary Tape File 3 on CD-ROM [MRDF]. 1992. Washington, D.C. In Eng.
"Summary Tape File 3 (STF 3) contains sample data weighted to represent the total [U.S.] population. In addition, the file contains 100-percent counts and unweighted sample counts for total persons and total housing units. Other population and housing items are [also included]....Summary Tape File 3 is released as file 3A, file 3B, File 3C, and file 3D. The record layout is identical for all four files but the geographic coverage differs....STF 3D is not available on CD-ROM....The data files on the CD-ROM are in dBASE III+ format. The files for each State are labelled....Some State files will occupy more than one CD-ROM....CD-ROM's are released for States or groups of States as the files become available. The STF 3A CD-ROM will be issued in mid 1992. The STF 3B and STF 3C CD-ROM products will be released later in 1992. Cost of each CD-ROM is [U.S.] $150."
For a complete description of the file, which is also available on magnetic tape or cartridge, see 58:10814.
Correspondence: U.S. Bureau of the Census, Customer Services, Washington, D.C. 20233. Source: U.S. Bureau of the Census, Data User Services Division, Data Developments, No. XV-32, Jun 1992.

58:30830 United States. Bureau of the Census (Washington, D.C.). Current Population Survey: annual demographic file, 1989 [MRDF]. Pub. Order No. ICPSR 9374. [1989?]. Washington, D.C. Distributed by Inter-university Consortium for Political and Social Research [ICPSR]. In Eng.
"This data collection supplies standard monthly labor force data [for the United States] and also provides supplemental information on work experience, income, noncash benefits, and migration. Comprehensive information is given on the employment status, occupation, and industry of persons 15 years old and older....Information on demographic characteristics such as age, sex, race, household relationship, and Spanish origin is available for each person in the household enumerated." The file has a hierarchical structure and contains 275,770 cases, with a record length of 656.
For information on the 1988 file, see 56:20773.
Correspondence: Inter-university Consortium for Political and Social Research, P.O. Box 1248, Ann Arbor, MI 48106. Source: ICPSR Bulletin, 11(1), Sep 1990.

58:30831 United States. Bureau of the Census (Washington, D.C.). Population (1988) and per capita income (1987) estimates: governmental units [MRDF]. Pub. Order No. ICPSR 9416. [1988?]. Washington, D.C. Distributed by Inter-university Consortium for Political and Social Research [ICPSR]. In Eng.
"This data collection provides information on population and per capita income for all states, counties, incorporated places, and functioning minor civil divisions in 20 specified [U.S.] states. Included are corrected total population (census complete-count) as of April 1, 1980, per capita income in 1979 (census sample), population estimates as of July 1, 1988, and per capita income estimates for 1987." The file structure is rectangular and contains 40,677 cases, with one record per case and a record length of 106.
For information on data sets for earlier years, see 54:10898 and 52:40895.
Correspondence: Inter-university Consortium for Political and Social Research, P.O. Box 1248, Ann Arbor, MI 48106. Source: ICPSR Bulletin, 11(1), Sep 1990.

58:30832 United States. Bureau of the Census (Washington, D.C.). 1990 census of population and housing: Modified Age/Race, Sex and Hispanic origin (MARS) state and county file [MRDF]. 1992. Washington, D.C. In Eng.
"The MARS file provides data from the 1990 [U.S.] census as well as similar information from a special census file where the age and race data have been 'modified' to meet the needs of many users of census data. The race statistics were modified to be consistent with the classification used in data sets other than the census, while the age data were adjusted to correspond with the April 1, 1990 census data. These 'modified' data are consistent with the counts of the 1990 census as enumerated....Data are provided for counties with State totals....This file is available on 9 track tape or tape cartridge (IBM 3480 compatible) at 6250 bpi, in ASCII format. The minimum price is [U.S.] $175 which includes the tape and [accompanying] documentation."
Correspondence: U.S. Bureau of the Census, Customer Services, Washington, D.C. 20233. Source: U.S. Bureau of the Census, Data User Services Division, Data Developments, No. XV-22, Apr 1992.

58:30833 United States. Bureau of the Census (Washington, D.C.). 1991 Contiguous County File [MRDF]. 1992. Washington, D.C. In Eng.
"This file provides information on the locational relationship between counties (and statistically equivalent entities) in the United States. Counties are identified as having several types of contiguity: those having physical adjacency..., those that are nearby but not adjacent, and those that do not border but nevertheless are economically integrated (measured by one-way commuting flows of at least 2,000 people per day based on data from the 1980 census). This file, which was prepared originally as part of the work related to validating 1975-1980 population estimates, has been updated through December 1991." The file structure is rectangular and contains 22,212 logical records, each with a record length of 56 characters. The file is available on one tape reel at 1600 or 6250 bpi for U.S. $175.
Correspondence: U.S. Bureau of the Census, Customer Services, Washington, D.C. 20233. Source: U.S. Bureau of the Census, Data User Services Division, Data Developments, No. XV-21, Mar 1992.


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