ARI cases vs. matched hospital | ||||||
---|---|---|---|---|---|---|
Variable | Cases (151) | Controls (246) | MOR (95% CI) | p | ||
N | % | N | % | |||
Pandemic influenza vaccination | 150 | 7 | 246 | 7 | 1.0 (0.4-2.5) | 0.94 |
Seasonal influenza vaccination 2009/10 | 150 | 31 | 237 | 22 | 1.7 (1.1-2.8) | 0.03 |
Seasonal influenza vaccination 2008/09 | 144 | 22 | 239 | 24 | 0.8 (0.4-1.5) | 0.51 |
Seasonal influenza vaccination 2007/08 | 142 | 19 | 239 | 22 | 0.6 (0.4-1.7) | 0.63 |
Pneumococcal vaccine | 131 | 15 | 211 | 5 | 4.3 (1.5-11.8) | 0.005 |
Pandemic influenza vaccine offered by employer | 148 | 10 | 245 | 20 | 0.4 (0.2-0.8) | 0.01 |
Any chronic underlying illness | 152 | 67 | 246 | 57 | 4.5 (1.9-10.4 | 0.001 |
Any chronic lung disease | 151 | 26 | 246 | 6 | 12.9 (4.5-36.4) | <0.0001 |
COPD | 150 | 16 | 246 | 10 | 1.9 (1.0-3.6) | 0.05 |
Asthma | 151 | 16 | 246 | 10 | 2.1 (1.0-4.3) | 0.05 |
Chronic bronchitis | 152 | 35 | 244 | 18 | 3.4 (1.9-6.1) | <0.0001 |
Cardiovascular disease | 152 | 39 | 245 | 30 | 1.9 (1.1-3.2) | 0.02 |
Immunosuppression | 146 | 15 | 246 | 0.4 | 35.2 (4.7-262.5) | 0.001 |
BMI ≥31 | 151 | 21 | 244 | 24 | 0.9 (0.5-1.4) | 0.54 |
Frailty | 151 | 9 | 246 | 6 | 1.8 (0.8-4.0) | 0.18 |
≥ 3 physician visits in past year | 151 | 55 | 242 | 53 | 1.0 (0.7-1.6) | 0.88 |
≥ 1 hospitalization in past year | 152 | 30 | 245 | 34 | 0.9 (0.5-1.4) | 0.57 |
Current smoker | 152 | 44 | 246 | 47 | 0.9 (0.6-1.3) | 0.53 |
>20 packyears vs. non-smoker | 152 | 32 | 246 | 31 | 1.3 (0.7-2.3) | 0.41 |
Alcohol: ≥ 1 drink/week | 150 | 55 | 234 | 63 | 0.7 (0.4-1.0) | 0.07 |
Children in household | 152 | 38 | 246 | 19 | 2.7 (1.6-4.3) | <0.0001 |
Public transport (> = 3x/week) vs. none | 152 | 41 | 244 | 44 | 0.9 (0.6-1.4) | 0.52 |
Owns car | 152 | 53 | 243 | 60 | 0.8 (0.5-1.1) | 0.18 |
Completion of at least Grade 10 | 149 | 66 | 239 | 77 | 0.6 (0.4-0.9) | 0.02 |
Private health insurance | 152 | 15 | 244 | 19 | 0.6 (0.3-1.1) | 0.11 |