Table 3.
The risks for preterm delivery at <37weeks and <34 weeks of gestation among patients with obesity and morbid obesity and with and without cerclage
| Cerclage groups | Obesity type | N | Preterm <34 wka | P value | OR (95% CI) | Adjusted ORb(95% CI) | Preterm <37 wk | P value | OR (95% CI) | Adjusted OR(95% CI) |
|---|---|---|---|---|---|---|---|---|---|---|
| Cerclage placed | Nonobesec | 2638 | 445 (16.9) | .001 | Ref | Ref | 745 (28.2) | .009 | Ref | Ref |
| Obese | 832 | 175 (21.0) | 1.31 (1.08–1.60) | 1.33 (1.08–1.63) | 280 (33.7) | 1.29 (1.09–1.52) | 1.23 (1.03–1.46) | |||
| Morbidly obese | 184 | 46 (25.0) | 1.64 (1.16–2.33) | 1.54 (1.06–2.23) | 59 (32.1) | 1.20 (0.87–1.65) | 1.01 (0.72–1.43) | |||
| Without cerclage | Nonobese | 2,233,435 | 56,815 (2.5) | <.0001 | Ref | Ref | 153,620 (6.7) | <.0001 | Ref | Ref |
| Obese | 489,536 | 16,077 (3.3) | 1.30 (1.28–1.32) | 1.11 (1.09–1.14) | 39,417 (8.1) | 1.18 (1.17–1.20) | 1.04 (1.03–1.05) | |||
| Morbidly obese | 81,700 | 3195 (3.9) | 1.56 (1.50–1.62) | 1.13 (1.08–1.17) | 7724 (9.5) | 1.41 (1.38–1.45) | 1.07 (1.04–1.10) |
BMI, body mass index; CI, confidence interval; OR, odds ratio.
a
The data are presented as number (percentage)
b
ORs were adjusted for maternal age, race, insurance type, hypertension, preeclampsia, pregestational diabetes, gestational diabetes, history of preterm delivery, and history of cesarean delivery
c
People without obesity are those with a BMI <30 kg/m2, people with obesity are those with a BMI of 30 to 40 kg/m2, and those with morbid obesity have a BMI >40 kg/m2
Nguyen. Obesity and preterm delivery risk with cervical cerclage. Am J Obstet Gynecol Glob Rep 2023.