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November 7, 2009
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National Fertility Survey, 1970. National Fertility Survey, 1975.
National Fertility Survey, 1965.Basic Information
Additional InformationSample6397 eligible women were selected for interview, of whom 5617 were actually interviewed, yielding a response rate of 88%. 8% of the eligible women refused to be interviewed; the remainder were either repeatedly not at home or not available for other reasons.Characteristics of the sampled women were compared with those of women in the same age groups from the March, 1965, and March, 1966, Current Population Surveys. Among black women aged 14-44, there was a considerable discrepancy between the proportion married and living with husband in the sample (12.9 %) and the CPS surveys (9.4 %). The proportion of black women under age 25 was also higher in the sample than in the CPS survey. The sample also somewhat underrepresents women with no children and may overrepresent women in the higher education categories, although this comparison can only be estimated.
Field WorkThe interviews were conducted by a staff of trained women from National Analysts, Inc. Two days of additional training were devoted to this questionnaire. The average length of interview was one hour and fifteen minutes.
Data CollectedWomen were asked questions about fertility and contraception, including contraceptive use and pregnancy histories, opinions on childbearing and childrearing, desired family size, future childbearing intentions and expectation of further children. Questions about coital frequency at the time of interview were asked. Marital history and some labor force participation history were recorded. Background information such as education, income, religion, social characteristics, and place of residence was also collected. The live birth history contains questions about length of breastfeeding and survival staus of the child. The pregnancy history contains questions about methods of contraception used and childbearing intentions at the time of conception.Other ReferencesDetailed results of the survey may be found in Reproduction in the United States, 1965, by Norman B. Ryder and Charles F. Westoff (Princeton, NJ, Princeton University Press, 1971), from which this abstract was prepared.Structure of the DataThe data are in a rectangular file, with one record for each respondent. Pregnancy histories and live birth histories are embedded in the record in repeating fields, with "inapplicable" codes assigned to events that didn't occur. These codes vary from variable to variable and must be checked in the codebook. The record weights are not coded in the data and must be defined based on race and age. (See Record Weights above under Basic Information).Location of Data and Documentationyou can click here for a file listNational Fertility Survey, 1970.Basic Information
Additional InformationSampleThe sample listed 38,839 households; for 6% of these, a listing of household members could not be obtained due to refusal or inability to find someone at home. In the households for which member listings were obtained, 7970 eligible women were identified, of whom 6752 completed interviews. This is a response rate of 85% among identified eligible women. Considering the number of women expected if listings had been obtained for all households, the response rate at the household level is estimated to be 80%.Based on comparisons with the 1970 census, the sample appears to have too few women living in central cities. However, this is at least partly due to reclassification of central cities in the 1970 census. The deficit extends to all racial, marital status and age groups. Age distributions match the Census very closely, but the NFS shows more women in the higher education categories than the Census does. The proportion of ever-married women who are currently married is lower in the NFS than in the Census. The NFS also shows fewer women with no children than the Census does. Field WorkTrained women on the staff of the Institute for Survey Research conducted the interviews, after receiving two days of additional training. Followup letters and telephone calls to respondents were used to validate the interviews. The average length of the interview was a little over an hour.Data CollectedWomen were asked questions about fertility and contraception, including contraceptive use and pregnancy histories, opinions on childbearing and childrearing, desire for more children, future childbearing intentions, expectation of more children, etc. Questions about coital frequency at the time of interview were asked. The respondent's marital history and employment history were recorded. Background information such as education, income, religion, social characteristics, and place of residence was also collected, as well as attitudes to abortion, sterilization, and the status and role of women. The live birth history contains questions about length of breastfeeding and survival status of the child. The pregnancy history contains questions about methods of contraception used and childbearing intentions at the time of conception.Other ReferencesDetailed results of the survey may be found in The Contraceptive Revolution, by Charles F. Westoff and Norman B. Ryder. (Princeton, NJ, Princeton University Press, 1971), from which this abstract was prepared.Structure of the DataThe data are in a rectangular file, with one record for each respondent. Pregnancy histories and live birth histories are imbedded in the record in repeating fields, with "inapplicable" codes assigned to events that didn't occur. The record weights are not coded in the data and must be defined based on race and marital status. (See Record Weights above under Basic Information.Location of Data and Documentationyou can click here for a file listNational Fertility Survey, 1975.Basic Information
Additional InformationSampleOf the 6752 women in the 1970 NFS, 3247 were chosen for reinterview. Of these, 420 proved to be ineligible in the interval, because of marital disruption or incorrect data in the original interview. Of the remaining 2827, 2361 completed the reinterview. 353 women refused to be reinterviewed and the rest could not be located or were otherwise unavailable. The refusal rate varied among subgroups of the population. Catholic women, women who expected no more children, women with longer marriage durations, and women in the lower education categories were more likely to refuse reinterview. Thus the sample cannot be considered representative of the original target population.Field WorkThe interviews were conducted by trained staff members of the Institute for Survey Research.Data CollectedWomen were asked questions about fertility and contraception, including contraceptive use and pregnancy and abortion histories, opinions on childbearing and childrearing, and future childbearing intentions. A five-year calendar of contraceptive use is included. Questions about coital frequency at the time of interview were asked. Background information such as education, income, religion, social characteristics, and place of residence was also collected, as well as attitudes about abortion, sex preferences, and the status and role of women. The live birth history contains questions about breastfeeding. The pregnancy history contains questions about methods of contraception used and childbearing intentions at the time of conception.Other References
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