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. 2010 May 14;10:17. doi: 10.1186/1472-6874-10-17

Table 2.

Adjusted risk ratio (RR) and 95% confidence intervals (CI) of gestational diabetes mellitus (GDM) according to self-reported sleep duration and snoring during early pregnancy.

Gestational Diabetes Mellitus *All *Lean *Overweight

No N = 1222 (n) Yes N = 68 (n) 1Adjusted RR (95% CI) 1Adjusted RR (95% CI) 1Adjusted RR (95% CI)
Sleep duration during pregnancy
 ≤4 hours 18 3 5.56 (1.31-23.69) 3.23 (0.34-30.41) 9.83 (1.12-86.32)
 5-8 hours 818 52 1.99 (0.89-4.47) 1.28 (0.47-3.43) 3.47 (0.79-15.22)
 9 hours 250 7 1.00--Reference 1.00--Reference 1.00--Reference
 ≥10 hours 129 6 1.82 (0.60-5.57) 1.39 (0.32-5.98) 2.56 (0.40-16.43)
 Missing 7 0
Snore during pregnancy
 No 1112 57 1.00--Reference 1.00--Reference 1.00--Reference
 Yes 80 9 1.86 (0.88-3.94) Insufficient data 2.54 (0.95-5.73)
 Missing 30 2

*All refers to analysis completed on the entire cohort, and after restriction to lean (<25 kg/m2) and overweight (≥25 kg/m2) women, respectively.

1RRs and 95% CIs are adjusted for maternal age and race/ethnicity.