Table 4. Adjusted RR and 95%CI of pregnancy outcomes by pre-pregnancy BMI and snoring status.

Variable	Beta	SE	Adjusted RR	95% CI
GDM
Lean snorers	0.50	0.15	1.65	1.22–2.23
Overweight/obese non-snorers	0.98	0.17	2.68	1.94–3.70
Overweight/obese snorers	0.83	0.24	2.29	1.44–3.64
Gestational hypertension
Lean snorers	0.32	0.33	1.38	0.73–2.63
Overweight/obese non-snorers	1.43	0.28	4.19	2.41–7.29
Overweight/obese snorers	1.44	0.39	4.24	1.98–9.11
Preeclampsia
Lean snorers	0.15	0.45	1.16	0.48–2.82
Overweight/obese non-snorers	0.93	0.43	2.54	1.09–5.94
Overweight/obese snorers	1.67	0.44	5.29	2.22–12.62
Cesarean delivery
Lean snorers	0.32	0.11	1.37	1.10–1.71
Overweight/obese non-snorers	0.49	0.14	1.63	1.24–2.15
Overweight/obese snorers	0.95	0.22	2.58	1.69–3.92
Preterm birth
Lean snorers	0.11	0.31	1.12	0.61–2.06
Overweight/obese non-snorers	0.63	0.31	1.87	1.03–3.41
Overweight/obese snorers	0.83	0.39	2.30	1.07–4.95
Macrosomia
Lean snorers	0.47	0.20	1.61	1.09–2.37
Overweight/obese non-snorers	0.60	0.23	1.83	1.16–2.87
Overweight/obese snorers	0.82	0.30	2.27	1.25–4.11
LGA
Lean snorers	0.50	0.14	1.65	1.26–2.16
Overweight/obese non-snorers	0.53	0.17	1.70	1.23–2.35
Overweight/obese snorers	0.86	0.22	2.35	1.54–3.60
Placental adhesion
Lean snorers	0.85	0.26	2.33	1.40–3.88
Overweight/obese non-snorers	0.86	0.31	2.36	1.30–4.30
Overweight/obese snorers	1.33	0.35	3.80	1.91–7.56

Covariates in model: maternal age, educational level, gravidity, only child or not, and maternal smoking.