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- Title
Dating gestational age by last menstrual period, symphysis-fundal height, and ultrasound in urban Pakistan
- Authors
Jehan, Imtiaz; Zaidi, Shahida; Rizvi, Sameera; Mobeen, Naushaba; McClure, Elizabeth M.; Munoz, Breda; Pasha, Omrana; Wright, Linda L.; Goldenberg, Robert L.
- Abstract
<bold>Objective: </bold>To compare the accuracy of the reported date of the last menstrual period (LMP) with that of symphysis-fundal height (SFH) in the estimation of gestational age (GA), using an ultrasound (US) scan as reference.<bold>Methods: </bold>Gestational age was concurrently assessed by the 3 methods in this prospective, population-based, pregnancy-outcome study conducted in Hyderabad, Pakistan, from June 18, 2003, through August 31, 2005, with 1128 women between 20 and 26 weeks of a singleton pregnancy.<bold>Results: </bold>The mean GA was less by ultrasound than by SFH measurement or the reported LMP, and the mean differences with the US result were statistically significant (P<0.001 for both). At delivery, about 75% of the GA values estimated by SFH measurement were within 7 days and almost 91% were within 14 days of the estimation by ultrasound, compared with 65% and 82% for the GA estimated by the reported LMP. Moreover, using the US as reference, the SFH correctly classified 84% of the term, 68% of the preterm, and 86% of the post-term deliveries (weighted kappa=0.58) compared with the corresponding 79%, 61%, and 55% predicted by the reported LMP (weighted kappa=0.44).<bold>Conclusion: </bold>The SFH measurement was found to be more accurate than the reported LMP as a tool to estimate GA and therefore date of delivery, but neither were as accurate as a US scan.
- Subjects
HYDERABAD (Pakistan); PAKISTAN; GESTATIONAL age; MENSTRUAL cycle; ULTRASONIC imaging; PREGNANCY; DELIVERY date (Obstetrics); HEALTH outcome assessment; POPULATION research; PUBIC symphysis; CLINICAL trials; COMPARATIVE studies; FETAL ultrasonic imaging; LONGITUDINAL method; RESEARCH methodology; MEDICAL cooperation; SECOND trimester of pregnancy; RESEARCH; RESEARCH funding; CITY dwellers; EVALUATION research; PHYSIOLOGY
- Publication
International Journal of Gynecology & Obstetrics, 2010, Vol 110, Issue 3, p231
- ISSN
0020-7292
- Publication type
journal article
- DOI
10.1016/j.ijgo.2010.03.030