Table 5
The percentage change in respiratory function for an interquartile range change in traffic counts, by three income levels and three education levels [N ¼ 1528 (1058 for eNO)]. .
Only respiratory function with at least one statistically significant result, where either the 95th percentile confidence intervals exclude 1 or the ORs are significantly different
from the low socioeconomic level, are shown. Thus, most of the results for $35e80,000 income group, and HS/college education group with most of respiratory function are not
shown.