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- W2615402011 abstract "Data from 3 surveys conducted by the National Center for Health Statistics were used to investigate the aggregate reliability stability and validity of womens birth expectations. Comparisons of birth expectations data have shown the following: 1) the National Survey of Family Growth (NSFG) Cycle 1 conducted by personal interview produced slightly lower estimates of total births expected than did the National Natality Survey (NNS) conducted by mail questionnaire but the difference was mainly the result of differences in coding procedures rather than in data collection techniques; 2) estimates of total births expected from Cycle 2 of the NSFG were nearly identical to those estimated for women in the same population in NSFG-1 about 32 months earlier; and 3) births actually occurring to women in the 2 years after NSFG-1 (as reported in NSFG-2) exceeded the number expected in that period by 30% but if unexpected births are not counted expectations and actual births were not significantly different. These finding support the following conclusions: 1) aggregate birth expectations are reliable - independent simultaneous measurements of the same expectations using different techniques are not significantly different provided data coding procedures are standardized; 2) aggregate birth expectations are stable - independent measurements at different times using the same technique are not significantly different; and 3) aggregate birth expectations are not valid - the measured number of births expected in a short period is greatly exceeded by the number actually born probably because women do not include their mistimed and unwanted births in expectations." @default.
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- W2615402011 date "1979-01-01" @default.
- W2615402011 modified "2023-09-28" @default.
- W2615402011 title "The validity and reliability of birth expectations: evidence from the National Survey of Family Growth and the National Natality Survey." @default.
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