TY - JOUR
T1 - Dating gestational age by last menstrual period, symphysis-fundal height, and ultrasound in urban Pakistan
AU - Jehan, Imtiaz
AU - Zaidi, Shahida
AU - Rizvi, Sameera
AU - Mobeen, Naushaba
AU - McClure, Elizabeth M.
AU - Munoz, Breda
AU - Pasha, Omrana
AU - Wright, Linda L.
AU - Goldenberg, Robert L.
N1 - Funding Information:
This study was supported by grants from the Global Network for Women's and Children's Health Research of the Eunice Kennedy Shriver National Institute of Child Health and Human Development and from the Bill and Melinda Gates Foundation .
PY - 2010/9
Y1 - 2010/9
N2 - Objective: 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. Methods: 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. Results: 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 κ = 0.58) compared with the corresponding 79%, 61%, and 55% predicted by the reported LMP (weighted κ = 0.44). Conclusion: 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.
AB - Objective: 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. Methods: 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. Results: 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 κ = 0.58) compared with the corresponding 79%, 61%, and 55% predicted by the reported LMP (weighted κ = 0.44). Conclusion: 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.
KW - Gestational age
KW - Last menstrual period
KW - Pakistan
KW - Symphysis-fundal height
KW - Ultrasound
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U2 - 10.1016/j.ijgo.2010.03.030
DO - 10.1016/j.ijgo.2010.03.030
M3 - Article
C2 - 20537328
AN - SCOPUS:77955711246
SN - 0020-7292
VL - 110
SP - 231
EP - 234
JO - International Journal of Gynecology and Obstetrics
JF - International Journal of Gynecology and Obstetrics
IS - 3
ER -