Table 1.
Associations between covariates and individual triggers.
| Covariate | Trigger | OR | Lower 95% CI | Upper 95% CI | t | p |
|---|---|---|---|---|---|---|
| Age | Exercise | 1.21 | 1.02 | 1.42 | 2.21 | 0.028 |
| Humidity | 1.23 | 1.05 | 1.44 | 2.52 | 0.012 | |
| Colds | 0.83 | 0.72 | 0.96 | −2.57 | 0.011 | |
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| Asthma duration | Weather | 1.14 | 1.03 | 1.25 | 2.58 | 0.011 |
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| Race (White versus Black) | Exercise | 2.05 | 1.01 | 4.04 | 2.44 | 0.047 |
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| Sex (female versus male) | Cigarette smoke | 2.06 | 1.15 | 3.70 | 2.45 | 0.015 |
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| SES | Allergies | 1.01 | 1.00 | 1.02 | 2.13 | 0.034 |
| Colds | 0.99 | 0.98 | 1.00 | −2.03 | 0.044 | |
| Mold | 0.99 | 0.98 | 1.00 | −2.22 | 0.028 | |
| Weather | 0.99 | 0.98 | 1.00 | −2.66 | 0.008 | |
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| Perceived severity | Laughing/crying | 1.25 | 1.03 | 1.54 | 2.21 | 0.028 |
| Humidity | 1.33 | 1.10 | 1.62 | 2.94 | 0.004 | |
| Dust Mites | 1.29 | 1.07 | 1.57 | 2.63 | 0.009 | |
| Cigarette smoke | 1.44 | 1.17 | 1.78 | 3.42 | 0.001 | |
| Colds | 1.02 | 1.01 | 1.42 | 2.07 | 0.04 | |
| Mold | 1.28 | 1.05 | 1.57 | 2.47 | 0.014 | |
| Smog | 1.50 | 1.25 | 1.81 | 4.31 | <0.001 | |
| Vapors | 1.42 | 1.16 | 1.74 | 3.37 | 0.001 | |
| Weather | 1.35 | 1.10 | 1.65 | 2.95 | 0.004 | |
OR = odds ratio (odds of reporting a trigger/odds of not reporting a trigger), adjusted for covariates; CI = confidence interval; t = t-statistic; p = probability; SES = socioeconomic status.