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Spacing Interval

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Journal Article
Demography (1968) 5 (1): 212–225.
Published: 01 March 1968
... writers to mean that families are becoming smaller and that couples are spacing their births at longer intervals. This paper presents data from the Census Bureau's Current Population Survey for June, 1965 which indicate that the average number of children ever born declined appreciably only for women aged...
Journal Article
Demography (1984) 21 (1): 9–18.
Published: 01 February 1984
... the degree to which they attempted to space their children at specific interval lengths. This paper compares spacing patterns among various groups of white U.S. women in 1900, who were distinguished by varying family sizes and levels offertility control. On the whole, there is little evidence of childspacing...
Journal Article
Demography (2022) 59 (1): 61–88.
Published: 01 February 2022
...Claus C. Pörtner Abstract Since the advent of prenatal sex-determination technologies in the mid-1980s, India has experienced an increasingly male-biased sex ratio at birth, presumably from sex-selective abortions. Abortions lengthen birth intervals, but we know little about how birth spacing has...
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Journal Article
Demography (2024) 61 (2): 393–418.
Published: 01 April 2024
..., these results are consistent with small to negligible effects of birth spacing behavior on (non-pregnancy-related) parental health outcomes. Copyright © 2024 The Authors 2024 Freely available online through the Demography open access option. Birth intervals Physical health Mental health Parents...
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Journal Article
Demography (2018) 55 (3): 929–955.
Published: 21 May 2018
...Kieron J. Barclay; Martin Kolk Abstract A growing body of research has examined whether birth intervals influence perinatal outcomes and child health as well as long-term educational and socioeconomic outcomes. To date, however, very little research has examined whether birth spacing influences...
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Journal Article
Demography (1984) 21 (3): 323–337.
Published: 01 August 1984
... Child Mortality Birth Interval Child Death Spacing Interval References Ben Porath Y. ( 1978 ). Fertility Response to Child Mortality: Microdata from Israel . In S. H. Preston (Ed.), The Effects of Infant and Child Mortality on Fertility (pp. 161 – 80 ). New York...
Journal Article
Demography (2022) 59 (3): 1117–1142.
Published: 01 June 2022
... intervals before the birth of the next youngest sibling are also associated with LBW, preterm birth, and infant mortality both with and without sibling comparisons. This pattern raises concerns that the sibling comparison models do not fully adjust for within-family factors predicting both spacing...
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Journal Article
Demography (1981) 18 (4): 529–548.
Published: 01 November 1981
... second birth interval. Age at first marriage has no causal effect on the spacing of the second birth for those whose first child was maritally conceived. The spacing of the first birth, however, appears to have a causal effect on the spacing of the second. 7 1 2011 © Population Association...
Journal Article
Demography (1987) 24 (2): 143–162.
Published: 01 May 1987
... intervals between births and delay the start of childbearing following marriage. A more complete understanding of the behavioral changes underlying the fertility transition clearly requires assessment of the part played by birth spacing in the reproductive changes that take place. Moreover, since the final...
Journal Article
Demography (2020) 57 (1): 267–296.
Published: 22 January 2020
..., birth intervals in sub-Saharan Africa have been lengthening since the onset of the transition. Birth control is not restricted to a dichotomy between limitation and spacing. Other reasons for curtailing childbearing and postponing having another birth also shape countries’ pathways through fertility...
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Journal Article
Demography (1992) 29 (2): 227–245.
Published: 01 May 1992
... of lowered PPRs for both earlier and later births ( - .71 and - 1.07 years), along with the declines both In age at first birth 44 years) and in the lengths of the earlier birth intervals (- .18 years). The only countervailing force was the longer spacing of the higher-order births. which contributed .23...
Journal Article
Demography (1966) 3 (2): 537–544.
Published: 01 June 1966
... cualquiera de los modelos actuales de computadores digitales. Tal modelo es esquematizado en esie trabajo. Unit Time Interval Areal Unit Regional Science Association Aspatial Model Simple Matrix Multiplication References 1 Isard Walter ( 1956 ). Location and Space-Economy . New...
Journal Article
Demography (1965) 2 (1): 187–202.
Published: 01 March 1965
... based on distributions of interval from first marriage to birth of first child are available from the 1959 survey (see accompanying tabulation). These figures indicate stability in the median spacing of the first child at about 1.5 years after marriage for women who 8 U.S. Bureau of the Census, "Marital...
Journal Article
Demography (1994) 31 (2): 297–319.
Published: 01 May 1994
... models for simple state spaces. We argue that Markov panel regression procedures can be used to provide smoothed or graduated group-specific estimates of transition probabilities that are more stable across short age intervals than those computed directly from sample data. We then join these estimates...
Journal Article
Demography (1987) 24 (1): 43–60.
Published: 01 February 1987
... , B. ( 1983 ). The effects of birth spacing on child and maternal health . Studies in Family Planning , 14 ( 10 ), 231 – 245 . 10.2307/1965748 Wolfers , D. , & Scrimshaw , S. ( 1975 ). Child survival and intervals between pregnancies in Guayaquil, Ecuador . Population...
Journal Article
Demography (1989) 26 (3): 473–483.
Published: 01 August 1989
...Douglas C. Ewbank Abstract A decomposition of age-specific marital fertility rates into indices related to spacing and stopping is developed by using Coale and Trussell’s indices and the first few parity progression ratios. This approach leads to estimates of the mean birth interval among low...
Journal Article
Demography (1980) 17 (3): 225–242.
Published: 01 August 1980
... to study the effects of the number and spacing of children on marital satis- faction without encountering some attri- tion as a result of separation and divorce. Even a longitudinal study of a marriage cohort which surveyed respondents at short and regular intervals would lose some respondents between...
Journal Article
Demography (1966) 3 (2): 450–461.
Published: 01 June 1966
... 4 13.00 _ 13.99 0 0 0 Y From left to right, the mean intervals are 67.2. 66.3. and 65.1 months; corresponding standard deviations are 6.7, 7.3, and 8.1. Table 2BTANDARD DEVIATION OF TIME WHEN DESffiED FAMILY SIZE Is ATTAINED, BY NUMBER OF CHILDREN WANTED, PREFERRED SPACING, AND EFFEC- TIVENESS...
Journal Article
Demography (1967) 4 (2): 850–858.
Published: 01 June 1967
... to add to 100 percent. We investigate how frequently this failure occurs and what the distributions of sums of rounded percentages are for (1) an empirical set of data, (2) the multinomial distribution in small samples, (3) spacings between points dropped on an interval—the broken-stick model—; and (4...
Journal Article
Demography (2017) 54 (2): 413–436.
Published: 09 March 2017
... to significantly later marriages but also to longer birth intervals within marriage. In our robustness analyses, we explore the impact of some key confounding factors to rule out the possibility that the spacing effects we observe are positive checks rather than preventive checks. To shed light on the role...
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