{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,3]],"date-time":"2025-12-03T17:31:10Z","timestamp":1764783070290},"reference-count":17,"publisher":"Cambridge University Press (CUP)","issue":"3","license":[{"start":{"date-parts":[[2008,7,31]],"date-time":"2008-07-31T00:00:00Z","timestamp":1217462400000},"content-version":"unspecified","delay-in-days":6970,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Biosoc. Sci."],"published-print":{"date-parts":[[1989,7]]},"abstract":"<jats:title>Summary<\/jats:title><jats:p>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.<\/jats:p><jats:p>There is evidence for a reduction in high parity births,' starting in the 1970s.<\/jats:p>","DOI":"10.1017\/s0021932000018009","type":"journal-article","created":{"date-parts":[[2008,7,31]],"date-time":"2008-07-31T12:06:02Z","timestamp":1217505962000},"page":"301-320","source":"Crossref","is-referenced-by-count":2,"title":["Determinants of birth intervals in Sudan"],"prefix":"10.1017","volume":"21","author":[{"given":"Mona A.","family":"Khalifa","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"56","published-online":{"date-parts":[[2008,7,31]]},"reference":[{"key":"S0021932000018009_ref009","volume-title":"Statistical Methods for Social Scientists","author":"Hanushek","year":"1977"},{"key":"S0021932000018009_ref017","volume-title":"A Comparative Analysis of Determinants of Birth Intervals","author":"Rodriguez","year":"1984"},{"key":"S0021932000018009_ref015","volume-title":"Evaluation of the Sudan Fertility Survey 1978\u201379","author":"Rizgalla","year":"1985"},{"key":"S0021932000018009_ref006","doi-asserted-by":"publisher","DOI":"10.1086\/449714"},{"key":"S0021932000018009_ref001","volume-title":"The Proximate Determinants of Fertility in North Sudan","author":"Abbas","year":"1985"},{"key":"S0021932000018009_ref002","doi-asserted-by":"publisher","DOI":"10.2307\/1972149"},{"key":"S0021932000018009_ref007","volume-title":"The Sudan Fertility Survey, 1979","year":"1981"},{"key":"S0021932000018009_ref003","doi-asserted-by":"publisher","DOI":"10.1080\/0032472031000142326"},{"key":"S0021932000018009_ref004","doi-asserted-by":"publisher","DOI":"10.2307\/2061193"},{"key":"S0021932000018009_ref005","volume-title":"Age and Date Reporting","author":"Chidambaram","year":"1984"},{"key":"S0021932000018009_ref011","volume-title":"Linear Model for WFS Data","author":"Little","year":"1980"},{"key":"S0021932000018009_ref008","unstructured":"El-Badri B. (1978) Conjugal Roles in Omdurman. PhD thesis, University of Hull."},{"key":"S0021932000018009_ref010","doi-asserted-by":"publisher","DOI":"10.1017\/S0021932000014656"},{"key":"S0021932000018009_ref013","volume-title":"Child Spacing in Asia: Similarities and Differences","author":"Rindfuss","year":"1984"},{"key":"S0021932000018009_ref014","doi-asserted-by":"publisher","DOI":"10.2307\/1973052"},{"key":"S0021932000018009_ref016","volume-title":"Illustrative Analysis: Life Table Analysis of Birth Intervals in Colombia","author":"Rodriguez","year":"1980"},{"key":"S0021932000018009_ref012","doi-asserted-by":"publisher","DOI":"10.2307\/2060698"}],"container-title":["Journal of Biosocial Science"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.cambridge.org\/core\/services\/aop-cambridge-core\/content\/view\/S0021932000018009","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,5,19]],"date-time":"2019-05-19T20:04:11Z","timestamp":1558296251000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.cambridge.org\/core\/product\/identifier\/S0021932000018009\/type\/journal_article"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1989,7]]},"references-count":17,"journal-issue":{"issue":"3","published-print":{"date-parts":[[1989,7]]}},"alternative-id":["S0021932000018009"],"URL":"https:\/\/doi.org\/10.1017\/s0021932000018009","relation":{},"ISSN":["0021-9320","1469-7599"],"issn-type":[{"value":"0021-9320","type":"print"},{"value":"1469-7599","type":"electronic"}],"subject":[],"published":{"date-parts":[[1989,7]]}}}