Associations between recent symptoms and allergen skin prick test reactivity and population fractions of symptoms attributable to skin prick test reactivity (PAF%) in urban and rural schoolchildren
| Recent symptoms | SPT | Interaction p value | |||||
|---|---|---|---|---|---|---|---|
| Urban | Rural | ||||||
| OR (95% CI) | p Value | PAF% | OR (95% CI) | p Value | PAF% | ||
| Wheeze | 2.35 (1.63 to 3.40) | <0.001 | 10.7 | 1.36 (1.01 to 1.83) | 0.04 | 3.9 | 0.01 |
| Rhinitis | 1.82 (1.22 to 2.73) | 0.004 | 7.3 | 0.94 (0.63 to 1.40) | 0.75 | – | 0.01 |
| Eczema | 1.60 (0.99 to 2.60) | 0.06 | 5.7 | 1.47 (1.00 to 2.16) | 0.05 | 5.3 | 0.74 |
Shown also are p values for the interaction effect of the area of residence.
Numbers in bold represent p<0.05.
ORs are adjusted for age, sex and maternal educational level (eczema only).
PAF%, population attributable fraction; SPT, skin prick test reactivity.