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Table 4 The modified effect of positive events based on integrated grouping

From: Maternal exposure to life events during pregnancy and congenital heart disease in offspring: a case-control study in a Chinese population

Positive Negative Case group Control group OR (95%CI) a
Events Events (n = 699) (n = 1581) Unadjusted Adjusted
0 0 346 (49.50) 649 (41.05) 1.00 1.00
0 1 193 (27.61) 240 (15.18) 1.51 (1.20, 1.90) 1.38 (1.05, 1.82) *
1 1 104 (14.88) 312 (19.73) 0.63 (0.48, 0.81) 0.67 (0.49, 0.91) *
1 0 56 (8.01) 380 (24.04) 0.28 (0.20, 0.38) 0.29 (0.21, 0.42)
  1. aLogistic model was used for estimating risk of life events with or without adjusting for covariates. Adjusted covariates included maternal age, residence, maternal education, paternal education, family history of CHD, history of parturition, history of abortion, infection during periconception, and abnormal prenatal examination
  2. * p < 0.05; ** p < 0.01;  p < 0.001