From: Effect of Body Mass Index on pregnancy outcomes in nulliparous women delivering singleton babies
Characteristics | OR (95% CI) | Underweight BMI < 20 n = 2842 | Overweight BM I= 25–29.9 n = 5308 | Obese BMI = 30–34.9 n = 1858 | Morbidly Obese BMI > 35 n = 157 |
---|---|---|---|---|---|
Pre-eclampsia* | Crude | 0.7(0.5–0.8) | 1.7(1.4–1.9) | 3.3(2.7–3.9) | 7.4(4.8–11.5) |
Adjusted | 0.6(0.5–0.7) | 1.6(1.2–1.8) | 3.1(2.8–3.5) | 7.2(4.7–11.2) | |
Gestational hypertension* | Crude | 0.6(0.5–0.7) | 1.6(1.5–1.8) | 2.4(2.2–2.7) | 3.0(2.1–4.2) |
Adjusted | 07(0.6–0.8) | 1.5(1.4–1.7) | 2.2(2.1–2.6) | 3.1(2.0–4.3) | |
Induced labour* | Crude | 0.8(0.7–0.9) | 1.3(1.2–1.4) | 2.0(1.8–2.2) | 2.6(1.9–3.5) |
Adjusted | 0.8(0.8–0.9) | 1.3(1.2–1.4) | 1.8(1.6–2.0) | 1.8(1.3–2.5) | |
Elective C-section | Crude | 0.7(0.6–0.9)* | 1.2(1.0–1.4) | 1.4(1.1–1.8)* | 3.2(1.9–5.3)* |
Adjusted | 0.8(0.6–1.0) | 1.1(0.9–1.3) | 1.4(1.0–1.8) | 3.1(1.7–6.1)* | |
Emergency CS | Crude | 0.9(0.9–1.0) | 1.7(1.5–1.8)* | 2.4(2.1–2.7)* | 3.2(2.3–4.5)* |
Adjusted | 0.9(0.8–1.1) | 1.5(1.3–1.6)* | 2.0(1.8–2.3)* | 2.8(2.0–3.9)* | |
Postpartum hge | Crude | 0.7(0.6–0.8)* | 1.4(1.3–1.6)* | 2.3(2.1–2.6)* | 2.9(2.0–4.2)* |
Adjusted | 0.8(0.7–1.0) | 1.1(1.0–1.2) | 1.5(1.3–1.7)* | 1.3(0.8–1.9) | |
Preterm delivery (< 37 weeks) | Crude | 1.1(0.9–1.3) | 1.0(0.9–1.1) | 1.2(1.1–1.4)* | 2.1(1.4–3.1)* |
Adjusted | 1.0(0.9–1.3) | 1.0(0.9–1.1) | 1.2(1.0–1.4) | 1.6(1.0–2.7) | |
Preterm delivery (< 33 weeks) | Crude | 0.9(0.7–1.2) | 1.0(0.8–1.2) | 1.8(1.4–2.3)* | 2.8(1.4–5.4)* |
Adjusted | 0.9(0.7–1.1) | 1.0(0.8–1.1) | 2.0(1.3–2.9)* | 2.0(0.8–4.9) | |
Spont. Preterm (< 37 weeks) | Crude | 1.4(1.1–1.9) | 0.8(0.6–1.0) | 0.9(0.5–1.1) | 1.3(1.1–2.8) |
Adjusted | 1.4(1.1–1.9) | 0.8(0.6–1.1) | 1.0(0.5–1.2) | 1.2(1.1–2.8) | |
Post term (> 41 weeks) | Crude | 0.7(0.6–0.8)* | 1.2(1.1–1.3)* | 1.4(1.1–1.6)* | 0.8 (0.4–1.7) |
Adjusted | 0.9(0.7–1.1) | 0.9(0.8–1.1) | 0.9(0.7–1.1) | 0.8(0.4–1.8) | |
Stillbirth | Crude | 0.8(0.5–1.3) | 1.2(0.9–1.6) | 2.0(1.4–3.0) | 2.8(1.0–7.6) |
Adjusted | 1.0(0.6–1.6) | 1.3(0.9–1.9) | 1.8 (1.1–2.9)* | 1.1(0.3–4.1) | |
Birth weight < 2500 g | Crude | 1.4(1.2–1.6)* | 0.9(0.7–1.0) | 1.1(0.9–1.3) | 1.8(1.1–3.0)* |
Adjusted | 1.7(1.2–2.0)* | 0.9(0.7–1.1) | 1.1(0.9–1.3) | 0.7(0.4–1.5) | |
Birth weight > 4000 g* | Crude | 0.4(0.4–0.6) | 1.4(1.3–1.6) | 1.9(1.7–2.2) | 2.3(1.5–3.5) |
Adjusted | 0.5(0.4–0.6) | 1.4(1.3–1.6) | 1.9(1.6–2.2) | 2.1(1.3–3.2) |