Cutoff points of TG at each gestational week
ROC curves for the prediction of gestational TG level on
hypertriglyceridemia at 42 days postpartum reached an AUC of 0.759,
0.750, 0.738 and 0.708 at
6-8th,16th, 24thand 36th gestational week, respectively (Fig.
2 ). TG cutoff point was 1.12 mmol/L at 6-8thgestational week (sensitivity = 67.7%, specificity = 70.7%), 1.93
mmol/L at 16th gestational week (sensitivity = 61.7%,
specificity = 75.9%), 2.35 mmol/L at 24th gestational
week (sensitivity = 66.2%, specificity = 73.4%), and 3.08 mmol/L at
36th gestational week (sensitivity = 70.1%,
specificity = 63.8%) (Table 6) . According to AUC and the
Hosmer-Lemeshow goodness-of-fit test, the prediction model had favorable
discrimination and calibration (χ2 = 6.156, P =
0.630; χ2 = 10.382, P = 0.239;
χ2 = 9.786, P = 0.280; χ2 =
21.917, P = 0.050) (Table 6) .
Effects of pre-BMI and GDM on the risk ofpostpartum
hypertriglyceridemia
According to the hierarchical logistic regression analysis for different
pre-BMI subgroup, the positive association between gestational TG levels
and risk of postpartum hypertriglyceridemia remained in normal weight
and overweight & obese group. At 16th,
24th and 36th gestational week, the
risk of postpartum hypertriglyceridemia for women with normal pre-BMI
[OR 3.756, 95% CI (2.337-6.035); OR 2.603, 95% CI (1.760-3.850); OR
2.174, 95% CI (1.630-2.901)] was higher than overweight & obese
group [OR 2.748, 95% CI (1.457-5.181); OR 2.451, 95% CI
(1.505-3.991); OR 1.862, 95% CI (1.295-2.677)], respectively(Table 7) .
As for the subgroup divided by GDM, the risk of postpartum
hypertriglyceridemia for non-GDM women at 6-8th,
16th, 24th and
36th gestational week [OR 5.710, 95% CI
(2.975-10.956); OR 3.421, 95% CI (2.208-5.302); OR 2.580, 95% CI
(1.833-3.632); OR 2.161, 95% CI (1.646-2.836)] was higher than GDM
group [OR 3.702, 95% CI (1.673-8.193); OR 2.890, 95% CI
(1.465-5.701); OR 2.125, 95% CI (1.216-3.714); OR 1.821, 95% CI
(1.253-2.646)], respectively (Table 7) .