Table 5.

Results of logistic regression analyses of developmental delay at 2 years of age and PAH–DNA adducts.^a

DQ area	2002 Cohort OR (95% CI),bp-value	2005 Cohort OR (95% CI), p-value
Motor area	1.91 (1.22 to 2.97) p = 0.004	2.06 (0.62 to 6.84) p = 0.240
Adaptive area	1.16 (0.76 to 1.76) p = 0.500	1.78 (0.79 to 4.00) p = 0.161
Language area	1.31 (0.84 to 2.05) p = 0.234	2.34 (0.96 to 5.71) p = 0.061
Social area	1.52 (0.93 to 2.50) p = 0.095	3.38 (0.59 to 19.35) p = 0.171
Average	1.67 (0.93 to 3.00) p = 0.088	NAc

NA, not available.

^aModel included cord lead level, sex, gestational age, maternal education, and ETS as covariates.

^bThe ORs for cord adducts presented in this table represent the effect of a 1-unit (0.1 adduct/10⁸ nucleotides) increment in cord adducts.

^cSPSS statistical software (SPSS Inc, Chicago, IL, USA) failed to provide accurate estimates.