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Table 4 Percentage change in K-SCQ scores associated with 2-fold increases in creatinine-adjusted prenatal BPA levels above or below 3.0 μg/g creatinine

From: Prenatal and postnatal bisphenol A exposure and social impairment in 4-year-old children

   Below 3.0 μg/g creatinine At or above 3.0 μg/g creatinine
Subcategory of K-SCQ score Gender % change (95% CI) P-value % change (95% CI) P-value
Total All −0.1 (−4.8, 4.9) 0.9728 16.9 (2.3, 33.5)* 0.0214
Boys 1.3 (−5.2, 8.2) 0.7062 10.8 (−6.1, 30.7) 0.2248
Girls −1.7 (−8.8, 6.0) 0.6624 29.4 (0.2, 67.1)* 0.0483
Social interaction All −1.6 (−11.6, 9.6) 0.7707 11.4 (−17.5, 50.4) 0.4817
Boys −6.4 (−18.2, 7.1) 0.3341 15.8 (−18.5, 64.7) 0.4127
Girls 13.2 (−5.7, 35.8) 0.1842 −3.4 (−51.6, 92.5) 0.9210
Social communication All −1.3 (−9.5, 7.6) 0.7638 24.4 (−1.0, 56.4)# 0.0610
Boys 7.0 (−5.6, 21.3) 0.2886 4.7 (−22.4, 41.3) 0.7644
Girls −9.0 (−20.0, 3.5) 0.1516 58.4 (6.5, 135.8)* 0.0233
Behavior patterns All 2.2 (−7.3, 12.7) 0.6554 20.2 (−7.4, 55.9) 0.1667
Boys 3.7 (−8.9, 18.1) 0.5796 16.3 (−15.0, 59.2) 0.3443
Girls −0.9 (−15.1, 15.7) 0.9080 29.3 (−24.5, 121.6) 0.3488
  1. Models were adjusted for gender (boy or girl), parity (1st vs. other), mother’s education (high school or lower vs. more than high school), birth weight (kg), and use of plastic dishes in the microwave oven (yes or no). In addition, prenatal and postnatal BPA levels were mutually controlled for in the model
  2. Abbreviations: K-SCQ Korean version of the Social Communication Questionnaire, BPA bisphenol A, CI confidence interval
  3. * P-value <0.05; # P-value <0.1