Effect of high parity on occurrence of some fetal growth indices: A cohort study

Yahya M. Al-Farsi, Daniel R. Brooks, Martha M. Werler, Howard J. Cabral, Mohammed A. Al-Shafaee, Henk C. Wallenburg

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


The objective of this retrospective cohort study was to explore the potential causal relation between parity and fetal growth indices, including low birth weight (LBW), macrosomia, and prematurity. The study was nested on a community trial in a city in Oman. The study analyzed 1939 pregnancies among 479 participants. Of these, 944 pregnancies (48.7%) were high parity (≥5). Obtained newborns with outcomes of interest were as follows: 191 LBW, 34 macrosomic, and 69 premature. Associations were measured using multilevel logistic regression modeling. Compared to low parity (LP, defined as <5), high parity was found to be associated with less risk of LBW (relative risk [RR] = 0.76; 95% confidence interval [CI]: 0.44-1.1) and prematurity (RR = 0.82; 95% CI: 0.54-1.27), but greater risk of macrosomia (RR = 1.8; 95% CI: 1.2-2.4). This study provides evidence that with increasing parity, risks of LBW and prematurity decrease, while risk of macrosomia increases.

Original languageEnglish
Pages (from-to)289-293
Number of pages5
JournalInternational Journal of Women's Health
Issue number1
Publication statusPublished - Jul 2 2012


  • Fetal growth
  • Low birth weight
  • Macrosomia
  • Oman
  • Parity
  • Prematurity

ASJC Scopus subject areas

  • Oncology
  • Obstetrics and Gynaecology
  • Maternity and Midwifery


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