Associations between serum TG level during pregnancy and at 42 days postpartum
TG level at 42 days postpartum was significantly positive correlated with TG levels at each gestational week according to Bivariate correlation analysis (Table S1 in the Supplementary Appendix). After adjustment of age, GWG, pre-BMI, GDM and gestational age, a positive association between TG levels at 6-8th, 16th, 24th, 36thgestational week and at 42 days postpartum was found by stepwise multiple linear regression (B = 0.789, P < 0.001; B = 0.634, P < 0.001; B = 0.572, P < 0.001; B = 0.366, P < 0.001). Besides, pre-BMI and GDM were the positive associated factors of TG level at 42 days postpartum throughout gestation (Table 2) .
The TG trend of change across pregnancy was positively associated with TG level at 42 days postpartum [B 1.425, 95% CI (1.162-1.688)], according to LME and liner regression model (Table 3) .