Table 4
The odds ratios (95% confidence intervals) between pollutants and respiratory symptoms or disorders among 1570 Windsor public school students 9e11 years old, by three
income levels and three education levels. . Only respiratory symptoms 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 symptoms are not shown.