Summary for Variable Group: Comparable sample
The Comparable sample variable group contains ten binary variables (one for each component survey) to allow users to generate samples that are consistent across time. With few exceptions, the sampling frames become more inclusive over time, with the earliest surveys having the most restrictive sample. Comparable sample ("CS") variables are equal to 1 if the respondent would have been included in the sample in that year. For example, a sample that is consistent with the 1955 GAF would include only those respondents who would have been included in a survey using the sample restrictions for the 1955 GAF, i.e., those for whom IFSS_CS1955=1. A consistent sample spanning multiple surveys would include only those respondents with a value of 1 for the comparable sample variable for each survey. For example, a consistent sample from 1965 to 1976 would contain only respondents for whom IFSS_CS1965=1, IFSS_CS1970=1, IFSS_CS1973=1 and IFSS_CS1976=1.
1965 NFS comparable sample
|1976 NSFG: Couple File|
|R7_CM||R7||1976 NSFG: Couple File|
|MARSTAT||N/A||1976 NSFG: Couple File|
|A7_CM||A7||1976 NSFG: Couple File|
|This variable indicates whether the respondent would have been included in the 1965 NFS sampling frame.
General Comparability Notes
The universe listed in the ICSPR documentation for the 1965 NFS is "Currently married women, born after July 1, 1910, living with their husbands, able to participate in an English language interview. The maximum age at the time of the interview was 55." IFSS_CS1965 is equal to 1 for all currently married women between the ages of 14 and 55 who did not report needing a foreign-language interview or translator, and 0 for all other women. The youngest woman in the 1965 sample was 14 at time of interview, so IFSS preserved that in IFSS_CS1965. The only surveys with data on foreign-language interviews are the 1995 and 2002 NSFG. Additionally, the 1965 NFS is the only survey to include women over 49.
IFSS cannot determine which women were living with their husbands, though in later years respondents could list their marital status as “separated;” those women are not included in IFSS_CS1965.