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Table 2 Associations between risk factors and GDM defined by 1999 WHO criteria in SBC and GUSTO cohort

From: Comparative epidemiology of gestational diabetes in ethnic Chinese from Shanghai birth cohort and growing up in Singapore towards healthy outcomes cohort

GDM Shanghai Birth cohort
Unadjusted
GUSTO Birth Cohort
Unadjusted
Shanghai Birth cohort
Adjusted
GUSTO Birth Cohort
Adjusted
P-value*
OR (95 % CI) P-value OR (95 % CI) P-value OR (95 % CI) P- value OR (95 % CI) P- value
Maternal age 1.08(1.03–1.14) 0.003 1.09(1.04–1.14) < 0.001 1.1(1.0-1.2) 0.020 1.09(1.03–1.14) 0.001 1.000
Pre-pregnancy BMI 1.08(1.03–1.15) 0.005 1.11(1.05–1.17) < 0.001 1.1(1.0-1.2) 0.028 1.1(1.0-1.2) 0.002 1.000
GWG at early pregnancy (z score)          
<-1 1.0   1.0   1.0   1.0   
-1 to 1 0.96(0.52–1.78) 0.894 1.6(0.8–3.2) 0.208 1.0(0.5–2.2) 0.955 1.7(0.8–3.5) 0.175 0.189
> 1 0.97(0.44–2.13) 0.942 1.8(0.8–4.2) 0.173 0.88(0.34–2.25) 0.786 1.7(0.7-4.0) 0.258 0.211
Alcohol consumption 5.1(0.3–82.0) 0.251 0.67(0.19–2.32) 0.526 8.8(0.5-144.8) 0.128 0.73(0.20–2.64) 0.632 < 0.001
Family history of diabetes 1.6(0.8-3.0) 0.165 1.0(0.6–1.6) 0.981 1.0(0.5–2.1) 0.996 0.86(0.52–1.43) 0.566 0.755
Family history of hypertension 1.6(1.0-2.4) 0.032 0.78(0.53–1.16) 0.223 1.5(0.9–2.5) 0.092 0.67(0.43–1.04) 0.076 0.016
Current or ever smoker 1.1(0.4–3.4) 0.842 0.79(0.39–1.61) 0.515 1.6(0.4-6.0) 0.509 1.1(0.5–2.3) 0.858 0.528
Parous 1.0(0.5–1.8) 1.000 1.2(0.8–1.7) 0.470 0.74(0.34–1.61) 0.443 0.97(0.64–1.49) 0.893 0.610
Male fetus 1.1(0.7–1.7) 0.633 1.1(0.7–1.6) 0.781 1.1(0.7–1.7) 0.801 1.1(0.7–1.6) 0.744 1.000
  1. Adjusted for maternal age, pre-pregnancy BMI, GWG at early pregnancy (z score), alcohol consumption, family history of diabetes, family history of hypertension, smoking status, parity, fetal sex
  2. In the adjusted model, 74.4 % of SBC subjects (546 out of 734) were used, 82.9 % of GUSTO subjects (561 out of 677) were used
  3. *P value for the difference between the two cohorts in the adjusted model