Fig. 3. Quantile regression models of cumulative VOC exposure regressed by NHANES wave.
Quantile plot for associations between cumulative VOC exposure score differences by NHANES wave where the 2005–06 NHANES wave is the referent group. The y-axes represent the cumulative VOC exposure score difference. Estimate and 95% confidence intervals are shown for 0.1, 0.2, 0.3, 0.4, 0.5 0.6, 0.7, 0.8 and 0.9 quantiles for NHANES waves (A) 2011–12 vs. 2005–06 and (B) 2013–14 vs. 2005–06. VOC= volatile organic compound; NHANES= National Health and Nutrition Examination Survey