caa a22 4500 386396779 CHVBK 20180307112141.0 cr unu---uuuuu 161130e198907 xx s 000 0 eng 10.1017/S0021932000018009 doi S0021932000018009 pii (NATIONALLICENCE)cambridge-10.1017/S0021932000018009 Khalifa Mona A. Department of Statistics, Cairo University, Khartoum Branch, Sudan Determinants of birth intervals in Sudan [Elektronische Daten] [Mona A. Khalifa] Using individual birth history data from the Sudan Fertility Survey, 1979, parity-related differences in fertility are demonstrated, as well as differences between socioeconomic groups. Rural women, women with no education and those married to uneducated husbands show rapid parity progression and its cumulative effects on fertility which are consistent over all birth intervals. Urban women, women with some education and those married to educated husbands, however, go rapidly through their second and third birth intervals and then more slowly at higher parities. A limitation of the study was the inability to control fully for the effects of breast-feeding and contraception. There is evidence for a reduction in high parity births,' starting in the 1970s. Copyright © Cambridge University Press 1989 Journal of Biosocial Science Cambridge University Press 21/3(1989-07), 301-320 0021-9320 21:3<301 1989 21 JBS https://doi.org/10.1017/S0021932000018009 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0021932000018009 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Khalifa Mona A. Department of Statistics, Cairo University, Khartoum Branch, Sudan NATIONALLICENCE 773 0- Journal of Biosocial Science Cambridge University Press 21/3(1989-07), 301-320 0021-9320 21:3<301 1989 21 JBS CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge