Table 5. Coexisting risk factors for the development of AD, AR or AS in children from non-atopic parents.
| Coexisting risk factors | N1/N2 | OR | p | |||
|---|---|---|---|---|---|---|
| AD | ||||||
| Family smoking+ | Breastfeeding+ | 59/310 | 1.957 | .125 | ||
| Family smoking+ | Tile flooring+ | 61/303 | 1.507 | .367 | ||
| Breastfeeding+ | Tile flooring+ | 170/189 | 2.158 | .049 | ||
| Family smoking+ | Breastfeeding+ | Tile flooring+ | 38/319 | 2.776 | .030 | |
| C/S+ | Breastfeeding+ | 55/315 | 3.111 | .006 | ||
| C/S+ | Dehumidifier+ | 15/352 | 1.714 | .492 | ||
| Breastfeeding+ | Dehumidifier+ | 42/317 | 2.442 | .055 | ||
| C/S+ | Breastfeeding+ | Dehumidifier+ | 6/352 | 2.147 | .492 | |
| AR | ||||||
| Family smoking+ | Curtaining+ | 77/287 | 1.875 | .018 | ||
| Family smoking+ | Tile flooring+ | 61/303 | 2.107 | .009 | ||
| Curtaining+ | Tile flooring+ | 222/146 | 1.787 | .015 | ||
| Family smoking+ | Curtaining+ | Tile flooring+ | 54/310 | 2.107 | .013 | |
| Male gender | Air filter- | 167/201 | 1.925 | .004 | ||
| Male gender | Curtaining+ | 174/194 | 1.905 | .005 | ||
| Air filter- | Curtaining+ | 240/128 | 2.647 | .000 | ||
| Male gender | Air filter- | Curtaining+ | 138/230 | 2.087 | .001 | |
| AS | ||||||
| Male gender | Air filter- | 167/201 | 1.930 | .039 | ||
| Male gender | Curtaining+ | 174/194 | 1.447 | .239 | ||
| Air filter- | Curtaining+ | 240/128 | 1.650 | .157 | ||
| Male gender | Air filter- | Curtaining+ | 138/230 | 1.555 | .160 | |
| Male gender | Family smoking+ | 61/315 | 1.473 | .317 | ||
| Male gender | Housing (Townhouse) | 134/215 | 1.914 | .045 | ||
| Family smoking+ | Housing (Townhouse) | 65/281 | 1.762 | .127 | ||
| Male gender | Family smoking+ | Housing (Townhouse) | 35/311 | 2.263 | .063 | |
Notes: Coexisting risk factors are selected from those representing individual association with AD, AR or AS, and the odds ratio (OR) for the 2 or 3 combined risk factors on the development of allergic diseases are calculated based on the affected children in the risk (N1) versus non-risk groups, (N2), where N1 is number of subjects with all listed risk factor and N2 is number of subjects not with all listed risk factors. “Air filter-“ is regarding to no use of air filter at home.