Table 4: Odds ratios of respiratory complaints in tear gas exposed group.

Parameter Odds ratio 95% confidence interval Chest tightness last year 2.493 1.251 4.971 Exercise dyspnea last year 1.900 1.096 3.292 Dyspnea on level ground 1.978 1.298 3.013 Winter morning cough 2.442 1.153 5.172 Winter morning phlegm 2.470 1.086 5.613 Winter daily phlegm 2.021 1.134 3.601