Table 3 Multivariable analyses of predictors of atopy in 1199 Peruvian children
Variable | Crude Odds ratio | p-value | Adjusted Odds Ratio (95% CI) | p-value |
|---|---|---|---|---|
Fractional exhaled nitric oxide | ||||
   >35 ppb | 6.7 | <0.001 | 5.6 (3.7-8.8) | <0.001 |
   20-35 ppb | 2.5 | <0.001 | 2.2 (1.5-3.2) | <0.001 |
   <20 ppb | 1.0 |  | Reference |  |
Site (rural) | 0.5 | <0.001 | 0.4 (0.3-0.6) | <0.001 |
Season of Fractional exhaled nitric oxide measurement | ||||
   Fall | 1.0 |  | Reference |  |
   Winter | 0.5 | <0.001 | 0.3 (0.2-0.5) | <0.001 |
   Spring | 0.4 | <0.001 | 0.2 (0.2-0.4) | <0.001 |
   Summer | 1.1 | 0.861 | 0.4 (0.3-0.8) | <0.001 |
Allergy Symptoms | 2.3 | <0.001 | 1.5 (1.1-2.0) | 0.03 |
Body mass index | 1.1 | 0.01 | 1.0 (1.0-1.1) | 0.27 |
Personal smoke | 1.5 | 0.17 | 1.1 (0.6-2.0) | 0.82 |
Second hand smoke | 1.1 | 0.62 | 1.1 (0.8-1.6) | 0.41 |