Category ‐ Obesity.

B Method: b Women were categorized as underweight (BMI <18.5 kg/m SP 2 sp ), overweight (BMI 25.0-29.9 kg/m SP 2 sp ), obesity class I (BMI 30.0-34.9 kg/m SP 2 sp ), obesity class II (BMI 35.0-39.9 kg/m SP 2 sp ), and obesity class III (BMI >=40.0 kg/m SP 2 sp ) and compared to women with normal BMI (18.5-24.9 kg/m SP 2 sp ). We analyzed the database for incidence of BMI, using CDC categories, including overweight (BMI 25-29.9), class 1 obesity (30-34.9), class 2 obesity (35-39.9), and class 3 obesity (>40). OP.0030 The impact of BMI on pregnancy and perinatal outcomes in 497,932 women Maria Carolina Borges 1; Gemma Clayton 1; Rachel M Freathy 2; Janine F Felix 3; Alba Fern... 1 University of Bristol, Bristol, UK; 2 University of Exeter, Exeter, UK; 3 Erasmus MC, Rotte... B Objectives: b To improve the evidence base on the causal effect of maternal pre-pregnancy body mass index (BMI) on a range of pregnancy and perinatal outcomes, including miscarriage, stillbirth, hypertensive disorders of pregnancies, gestational hypertension, preeclampsia, gestational diabetes, maternal anaemia, perinatal depression, pre-labour membrane rupture, induction of labour, caesarean section, preterm birth, large-for-gestational age, small-for-gestational age, low birthweight, high birthweight, low Apgar score after 1 min, low Apgar score after 5 min, neonatal intensive care unit admission, and breastfeeding initiation. PP.0104 The Impact of Abnormal Maternal Body Mass Index on Perinatal Outcome Ghinwa Lawand; Fathima Minisha; Thomas Farell Hamad Medical Corporation, Doha, Qatar B Objective: b Abnormal Body mass index (BMI) during pregnancy is a growing public health concern as it has been associated with an increased risk of maternal and neonatal complications. [Extracted from the article]