Associations between Ln-transformed maximum ozone concentrations and reported number of symptoms in various categories by stepwise linear regression analyses.

For all models R2a,b,c,d see Fig 1e 1 = Very satisfied, 2 = Somewhat satisfied, 3 = Neutral, 4 = Somewhat dissatisfied, 5 = Very dissatisfiedf NS—not selected by the stepwise variable selectiong The flight-related variables that were included in the final model based on a significance level of p41]). In parentheses the directions of the coefficients for the variables (continuous) or their categories (categorical) are indicated when significant at pAssociations between Ln-transformed maximum ozone concentrations and reported number of symptoms in various categories by stepwise linear regression analyses.