C S Ambrose1, H Caspard1, C Rizzo1, E C Stepka2, G Keenan1. 1. Medical Affairs, AstraZeneca, Gaithersburg, MD, USA. 2. Department of Pediatrics, University of Minnesota, Minneapolis, MN, USA.
Abstract
OBJECTIVE: To compare number of US preterm births based on obstetric versus last menstrual period (LMP) estimates and evaluate their correlations with clinical risk indicators associated with prematurity. STUDY DESIGN: Preterm births were assessed from LMP, per standard practice, and, separately, from obstetric estimates using the 2012 Natality Public Use File. Percentages of infants with neonatal intensive care unit (NICU) admission and low birth weight (LBW) were calculated. RESULT: More births were <37 weeks gestational age (GA) by reported LMP (11.4%) versus obstetric estimates (9.5%). Among infants preterm by LMP, but born at 37-41 weeks by obstetric estimates, there were 5.7% NICU admission and 7.7% LBW rates versus 25.2% and 35.4%, respectively, of those preterm by obstetric estimates but born 37-41 weeks by LMP assessments. CONCLUSION: Obstetric estimates provide the most clinically relevant estimates of US preterm births. Assessments calculated from LMP alone may overestimate prematurity incidence by ~20%.
OBJECTIVE: To compare number of US preterm births based on obstetric versus last menstrual period (LMP) estimates and evaluate their correlations with clinical risk indicators associated with prematurity. STUDY DESIGN: Preterm births were assessed from LMP, per standard practice, and, separately, from obstetric estimates using the 2012 Natality Public Use File. Percentages of infants with neonatal intensive care unit (NICU) admission and low birth weight (LBW) were calculated. RESULT: More births were <37 weeks gestational age (GA) by reported LMP (11.4%) versus obstetric estimates (9.5%). Among infants preterm by LMP, but born at 37-41 weeks by obstetric estimates, there were 5.7% NICU admission and 7.7% LBW rates versus 25.2% and 35.4%, respectively, of those preterm by obstetric estimates but born 37-41 weeks by LMP assessments. CONCLUSION: Obstetric estimates provide the most clinically relevant estimates of US preterm births. Assessments calculated from LMP alone may overestimate prematurity incidence by ~20%.
Authors: Joan T Price; Jennifer Winston; Bellington Vwalika; Stephen R Cole; Marie C D Stoner; Mwansa K Lubeya; Andrew Kumwenda; Jeffrey S A Stringer Journal: Int J Gynaecol Obstet Date: 2018-10-19 Impact factor: 3.561
Authors: Proma Paul; Jaya Chandna; Simon R Procter; Ziyaad Dangor; Shannon Leahy; Sridhar Santhanam; Hima B John; Quique Bassat; Justina Bramugy; Azucena Bardají; Amina Abubakar; Carophine Nasambu; Romina Libster; Clara Sánchez Yanotti; Farah Seedat; Erzsébet Horváth-Puhó; A K M Tanvir Hossain; Qazi Sadeq-Ur Rahman; Mark Jit; Charles R Newton; Kate Milner; Bronner P Gonçalves; Joy E Lawn Journal: EClinicalMedicine Date: 2022-04-28
Authors: Joan T Price; Bellington Vwalika; Katelyn J Rittenhouse; Humphrey Mwape; Jennifer Winston; Bethany L Freeman; Ntazana Sindano; Elizabeth M Stringer; Margaret P Kasaro; Benjamin H Chi; Jeffrey Sa Stringer Journal: Gates Open Res Date: 2020-01-24
Authors: G K Baldewsingh; B C Jubitana; E D van Eer; A Shankar; A D Hindori-Mohangoo; H H Covert; L Shi; M Y Lichtveld; C W R Zijlmans Journal: BMC Pregnancy Childbirth Date: 2020-11-11 Impact factor: 3.105