Table 1. Demographic description of study cohort.
| DF (n = 356) | DHF I–II (n = 111) | Severe disease (n = 32) | Overall (n = 499) | |
| Age in years | 32 (21–46) | 40 (22–58) | 36 (23–57) | 34 (21–51) |
| Male gender | 289 (81.1%) | 89 (80.2%) | 18 (56.2%) | 396 (79.4%) |
| Chinese ethnicity | 258 (72.5%) | 103 (92.8%) | 26 (81.2%) | 387 (77.6%) |
| Any co-morbidity | 5 (1.4%) | 3 (2.7%) | 1 (3.1%) | 9 (1.8%) |
| Fever at 1st visit | 250 (70.2%) | 100 (90.1%) | 31 (96.9%) | 381 (76.3%) |
| Fever days at 1st visit | 6 (3–9) | 6 (3–8) | 5 (3–9) | 6 (3–8) |
| Pain score at 1st visit | 5 (0–8) | 5 (0–8) | 5 (0–8) | 5 (0–8) |
For categorical variables, absolute numbers (and the relative percentage) are being indicated. For continuous variables, medians (and the relative 5th–95th percentile) are being indicated.