Volume 55 - Number 2 - Summer 1989

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.

55:20810 Australia. Bureau of Statistics (Belconnen, Australia). Family Survey, Australia, 1982 [MRDF]. [1987?]. Social Science Data Archives [distributor]: Belconnen, Australia. In Eng.
This data file contains information collected in 1982 on "the characteristics of Australian families....The survey was based on a sample of private and non-private dwellings covering approximately one third of one percent of Australia's population....Information collected included size and composition of the family, age, sex, marital status and other demographic characteristics of family members, income and other financial support received by the family, use of child care services, support services received by the aged, and reasons for leaving the parental home. Data is available on four levels--households, families, income units, and persons--enabling records to be linked across different units, to broaden the scope of the analysis of family characteristics." The file is also available directly from the Australian Bureau of Statistics.
Correspondence: Social Science Data Archives, Australian National University, G.P.O. Box 4, Canberra ACT 2601, Australia. Source: ACSPRI Newsletter, No.15, Mar 1987.

55:20811 United States. Bureau of the Census (Washington, D.C.). Current Population Survey, March 1988 [MRDF]. 1988. Washington, D.C. Distributed by U.S. Bureau of the Census [producer and distributor]. In Eng.
This hierarchical file contains 295,266 logical records (with a record length of 408 characters). The file sort sequence is by census state code and then by Metropolitan Statistical Area (MSA) or Primary Metropolitan Statistical Area (PMSA) code. "This file, also known as the Annual Demographic File, provides the usual monthly labor force data, but in addition, provides supplemental data on work experience, income, noncash benefits, and migration. Comprehensive information is given on the employment status, occupation, and industry of persons 14 years old and over....Data on employment and income refer to the preceding year, although demographic data refer to the time of the survey....Characteristics such as age, sex, race, household relationship, and Spanish origin are shown for each person in the household enumerated." Accompanying documentation is also available. The file is available on three reels at 1600 bpi for 525 U.S. dollars or on one reel at 6250 bpi for 175 U.S. dollars. Both versions are available in EBCDIC and ASCII.
For the MRDF concerning March 1987, see 54:10897.
Correspondence: Data User Services Division, Customer Services, Bureau of the Census, Washington, D.C. 20233. Source: U.S. Bureau of the Census, Data User Services Division, Data Developments, No. XI-16, Sep 1988.

55:20812 United States. Bureau of the Census (Washington, D.C.). Population Estimates for States and Counties with Components of Change, 1981-1986 [MRDF]. 1988. Washington, D.C. Distributed by U.S. Bureau of the Census [producer and distributor]. In Eng.
This is a rectangular file containing 3,139 logical records with a record length of 164 characters. The file provides the U.S. "population estimate for July 1, 1987; revised population estimates for July 1 for the years 1981 through 1986; and the corrected 1980 census population figure. In addition, figures are shown for the 1980-87 period of births, deaths, and net migration." The file is available on one reel at 6250 or 1600 bpi at a cost of 175 U.S. dollars. Accompanying reference materials are also provided.
For the related printed report, see elsewhere in this issue.
Correspondence: Data User Services Division, Customer Services, Bureau of the Census, Washington, D.C. 20233. Source: U.S. Bureau of the Census, Data User Services Division, Data Developments, No. XII-4, Jan 1989.

55:20813 United States. Bureau of the Census (Washington, D.C.). Projections of the Population of States, by Age, Sex and Race: 1988 to 2010 [MRDF]. 1989. Washington, D.C. Distributed by U.S. Bureau of the Census [producer and distributor]. In Eng.
"This file contains annual projections of the resident population for the 50 [U.S.] States and the District of Columbia by single years of age...,and race...for years 1986 through 2010. These projections utilize a mathematical projection model known as the cohort-component method. This method permits separate assumptions to be made for each of the components of population change: births, deaths, internal migration and international migration." The file structure is rectangular, with a record size of 800 characters and a record count of 15,600. Accompanying documentation is provided. The file is available on two tapes at 1600 bpi for 350 U.S. dollars or on one tape at 6250 bpi for 175 U.S. dollars.
Correspondence: Data User Services Division, Customer Services, Bureau of the Census, Washington, D.C. 20233. Source: U.S. Bureau of the Census, Data User Services Division, Data Developments, No. XII-6, Feb 1989.


Copyright © 1989-1996, Office of Population Research, Princeton University.