Table 6.
Crude and adjusted odds ratio (OR) and 95% confidence intervals (95% CI) for severe and mild influenza-like illness (ILI) by age group, among those with a Charlson Comorbidity Index score of zero (0)
| Age group | BMI category | Severe ILI | Mild ILI | |||
|---|---|---|---|---|---|---|
| Crude OR | Adjusted OR | Crude OR | Adjusted OR | |||
| 20–39 years | Overweight | 0·76 (0·23, 2·51) | 0·95 (0·28, 3·22) | 1·02 (0·89, 1·17) | 1·15 (0·99, 1·33) | |
| Obese | 1·94 (0·70, 5·35) | 2·30 (0·82, 6·51) | 1·21 (1·04, 1·40) | 1·35 (1·16, 1·58) | ||
| 40–59 years | Overweight | 1·58 (0·77, 3·21) | 1·51 (0·73, 3·12) | 1·03 (0·91, 1·16) | 1·08 (0·95, 1·23) | |
| Obese | 2·67 (1·35, 5·28) | 2·61 (1·31, 5·19) | 1·22 (1·07, 1·38) | 1·26 (1·11, 1·43) | ||
| ≥60 years | Overweight | 0·99 (0·62, 1·59) | 1·02 (0·63, 1·64) | 0·98 (0·82, 1·16) | 1·01 (0·85, 1·20) | |
| Obese | 1·14 (0·70, 1·88) | 1·26 (0·76, 2·09) | 1·06 (0·88, 1·28) | 1·10 (0·91, 1·32) | ||
BMI, body mass index.
Severe ILI is a hospitalized ILI visit. Mild ILI is an outpatient ILI visit. Reference group is normal weight (BMI 18·5–24·9); overweight = BMI 25·0–29·9; obese = BMI ≥ 30. Adjusted for sex and age (continuous).