Relative risk of respiratory infection associated the characteristics of children with asthma at practice level (95% CI)
| Relative risk of respiratory infection | Practice child asthma prevalence rates | Average age of children with asthma | % female | % non-white | % prescribed >6 inhaled relievers in last year | % prescribed >12 inhaled preventers in last year |
| LRTIs | ||||||
| Acute bronchitis and bronchiolitis | 1.22 (1.12 to 1.33) | 0.82 (0.60 to 1.13) | 1.01 (0.99 to 1.02) | 1.00 (0.99 to 1.00) | 1.03 (1.01 to 1.05) | 1.01 (0.97 to 1.05) |
| Pneumonia and pneumonitis | 1.22 (1.12 to 1.33) | 0.83 (0.60 to 1.13) | 1.01 (0.99 to 1.02) | 1.00 (0.99 to 1.00) | 1.03 (1.01 to 1.05) | 1.01 (0.97 to 1.05) |
| Pleurisy | 1.24 (0.98 to 1.53) | 0.64 (0.30 to 1.35) | 0.99 (0.96 to 1.03) | 0.99 (0.97 to 1.01) | 1.00 (0.95 to 1.04) | 1.03 (0.93 to 1.12) |
| Other LRTIs | 1.38 (1.03 to 1.83) | 0.45 (0.16 to 1.18) | 1.02 (0.98 to 1.07) | 0.99 (0.96 to 1.01) | 1.00 (0.93 to 1.07) | 0.83 (0.70 to 0.96) |
| Influenza-like Illness | 1.19 (1.12 to 1.28) | 0.90 (0.71 to 1.14) | 1.00 (0.99 to 1.02) | 1.01 (1.00 to 1.01) | 1.00 (0.99 to 1.01) | 1.00 (0.97 to 1.03) |
| URTIs | ||||||
| Common cold | 1.22 (1.15 to 1.29) | 0.96 (0.78 to 1.16) | 1.01 (1.00 to 1.01) | 1.00 (1.00 to 1.01) | 1.00 (0.99 to 1.02) | 1.00 (0.97 to 1.02) |
| Streptoccocal sore throat | 1.46 (0.82 to 2.53) | 0.32 (0.04 to 2.12) | 1.05 (0.97 to 1.15) | 0.99 (0.95 to 1.02) | 1.02 (0.89 to 1.14) | 0.70 (0.45 to 0.98) |
| Scarlatina | 1.34 (0.98 to 1.81) | 0.44 (0.16 to 1.19) | 1.02 (0.98 to 1.07) | 0.99 (0.96 to 1.01) | 0.99 (0.92 to 1.06) | 0.85 (0.72 to 0.99) |
| Other URTIs | 1.23 (1.17 to 1.30) | 0.97 (0.80 to 1.17) | 1.00 (0.99 to 1.01) | 1.00 (1.00 to 1.01) | 1.01 (0.99 to 1.02) | 0.99 (0.97 to 1.02) |
Bolded results are statistically significant.
LRTIs, lower respiratory tract infections; URTIs, upper respiratory tract infections.