Fig. 2

Comparison of HDP, PTB and LBW between groups. Adjusted odds ratio (aOR) of hypertensive disorders of pregnancy (HDP), preterm birth (PTB), and low birth weight (LBW) compared women with natural cycles (NC) group. a aOR in women with hormone replacement therapy (HRT) group compared with NC group. b aOR in women with ovulation induction (OI) group compared with NC group