Fig. 1— a) Unadjusted and b–f) adjusted odds ratios for wheezing phenotypes according to Composite Household Chemical Exposure (CHCE) z-score (a and b), CHCE z-score stratified for c) nonatopic and d) atopic children at age 7.5 yrs, and CHCE z-score for e) volatile organic compounds (VOCs) and f) nonVOCs. LOW: late-onset wheeze; IOP: intermediate-onset persistent; IOT: intermediate-onset transient; EOP: early-onset persistent; EOT: early-onset transient. The number of children in LOW, IOP, IOT, EOP, EOT and never wheeze groups were: a) 167, 149, 452, 413, 1,909, 4,072; b) 140, 129, 256, 317, 1,501, 3,522; c) 40, 35, 193, 105, 896, 1,971; d) 62, 56, 63, 106, 188, 433; e) 167, 149, 452, 413, 1,909, 4,072; and f) 167, 149, 452, 413, 1,909 and 4,072, respectively.