Mutually adjusted independent risk factors associated with being a case in the multiple regression analysis
| Risk factor | Adjusted odds ratio | 95% confidence intervals | p value |
| Place of residence | |||
| Rural | 1.0 | ||
| Urban | 3.46 | 1.48 to 8.06 | 0.004 |
| Nationality | |||
| Non-Saudi | 1.0 | ||
| Saudi | 2.09 | 0.94 to 4.65 | 0.07 |
| Sex | |||
| Female | 1.0 | ||
| Male | 0.63 | 0.32 to 1.32 | 0.17 |
| Mother's education | |||
| None | 1.0 | ||
| Primary | 0.30 | 0.11 to 0.77 | |
| Secondary | 0.54 | 0.21 to 1.42 | |
| Higher | 0.45 | 0.22 to 0.92 | 0.04 |
| Family history of asthma/allergy | |||
| No | 1.0 | ||
| Yes | 9.22 | 4.93 to 17.24 | <0.001 |
| Positive skin test | |||
| No | 1.0 | ||
| Yes | 4.39 | 2.34 to 8.23 | <0.001 |