Baseline characteristics in control and dengue cohorts
| Variable | Group; no. (%) of participants* | p value* | |
|---|---|---|---|
| Control n = 13 787 | With dengue n = 13 787 | ||
| Sex | 0.005 | ||
| Female | 6628 (48.1) | 6862 (49.8) | |
| Male | 7159 (51.9) | 6925 (50.2) | |
| Age, yr, mean ± SD | 44.2 ± 14.3 | 44.6 ± 19.3 | 0.05 |
| ≤ 30 | 2336 (16.9) | 3581 (26.0) | |
| 31–60 | 9528 (69.1) | 6886 (49.9) | |
| > 60 | 1923 (13.9) | 3320 (24.1) | |
| Total admission days, mean ± SD | 10.8 ± 97.6 | 10.5 ± 51.5 | 0.7 |
| Comorbidity | |||
| Atrial fibrillation and flutter | 62 (0.4) | 64 (0.5) | 0.9 |
| Cancer | 330 (2.4) | 292 (2.1) | 0.1 |
| COPD | 390 (2.8) | 371 (2.7) | 0.5 |
| Chronic renal failure | 79 (0.6) | 86 (0.6) | 0.6 |
| Diabetes mellitus | 645 (4.7) | 625 (4.5) | 0.6 |
| Dyslipidemia | 347 (2.5) | 306 (2.2) | 0.1 |
| Heart failure | 139 (1.0) | 133 (1.0) | 0.7 |
| Hypertension | 898 (6.5) | 876 (6.4) | 0.6 |
| Ischemic heart disease | 440 (3.2) | 447 (3.2) | 0.8 |
| Follow-up, yr, mean ± SD | 7.89 ± 3.71 | 7.58 ± 3.77 | NA |
| Top 5 reasons for admission† | NA | ||
| Digestive | 8865 (64.3) | DF: 12 477 (90.5) | |
| Cardiopulmonary | 783 (5.7) | DHF: 1310 (9.5) | |
| Metabolic | 533 (3.8) | ||
| Trauma | 398 (2.9) | ||
| Genitourinary | 226 (1.6) | ||
Note: COPD = chronic obstructive pulmonary disease, DF = dengue fever, DHF = dengue hemorrhagic fever, NA = not applicable, SD = standard deviation.
↵* Student t test for continuous variables and χ2 test for categorical variables.
↵† For patients in the dengue group, there were only 2 top reasons: dengue fever and dengue hemorrhagic fever.