Comparison of first trimester dating methods for gestational age estimation and their implication on preterm birth classification in a North Indian cohort

doi link
Published in "BMC Pregnancy Childbirth"
Ramya Vijayram , Nikhita Damaraju , Ashley Xavier , Bapu Koundinya Desiraju , Ramachandran Thiruvengadam , Sumit Misra , Shilpa Chopra , Ashok Khurana , Nitya Wadhwa , GARBH-Ini Study Group , Raghunathan Rengaswamy , Himanshu Sinha , Shinjini Bhatnagar
Pregnancy, Preterm , Maternal health

Different formulae have been developed globally to estimate gestational age (GA) by ultrasonography in the first trimester of pregnancy. In this study, we develop an Indian population-specific dating formula and compare its performance with published formulae. Finally, we evaluate the implications of the choice of dating method on preterm birth (PTB) rate. This study’s data was from GARBH-Ini, an ongoing pregnancy cohort of North Indian women to study PTB.