Table 1 Multiple logistic regression analysis using all studies in the UK and Australia of country, year, area, age and type of study on the prevalence of wheeze
From: Systematic review of worldwide variations of the prevalence of wheezing symptoms in children
Variable | All studies Odds Ratio (95% CI)(+p-value) | ISAAC studies only Odds Ratio (95% CI)(+p-value) | Non-ISAAC studies only Odds Ratio (95% CI)(+p-value) | ISAAC question only Odds Ratio (95% CI)(+p-value) |
|---|---|---|---|---|
Country: UK (reference) vs Australia | 1.343 [1.318, 1.369] p < 0.0005 | 0.987 [0.958, 1.016] p = 0.373 | 1.470 [1.438, 1.502] p < 0.0005 | 0.986 [0.957, 1.017] p = 0.370 |
Year of survey | 1.025 [1.023, 1.026] p < 0.0005 | 0.975 [0.971, 0.979] p < 0.0005 | 1.026 [1.024, 1.028] p < 0.0005 | 0.977 [0.973, 0.981] p < 0.0005 |
Age of children surveyed | 0.993 [0.989, 0.997] p < 0.0005 | 1.007 [0.998, 1.016] p = 0.124 | 0.989 [0.985, 0.993] p < 0.0005 | 1.006 [0.995, 1.017] p = 0.260 |
Parental- (reference) vs Self-response | 1.290 [1.246, 1.335] p < 0.0005 | § - | 1.242 [1.197, 1.287] p < 0.0005 | 1.739 [1.624, 1.862] p < 0.0005 |
ISAAC study: No (reference) vs Yes | 1.638 [1.598, 1.678] p < 0.0005 | - - - | - - - | - - - |