Table 3.
Presumptive diagnosis and serological evidence of acute dengue
| Presumptive clinical diagnosis | Number of cases | Serological evidence of acute dengue | P value | ||
| No positive (%) | OR* | 95% CI | |||
| Total | 697 | 234 (33.6) | |||
| Dengue fever | 45 | 22 (48.9) | 1,985 | 1,082 – 3,643 | 0,027 |
| Other | 652 | 212 (30.4) | |||
| Undifferentiated fever | 387 | 137 (35.4) | 1,203 | 0,876 – 1,654 | 0,254 |
| Pharyngitis | 140 | 44 (31.4) | 0,885 | 0,595 – 1,317 | 0,548 |
| Typhoid fever | 36 | 12 (33.3) | 0,989 | 0,485 – 2,014 | 0,975 |
| Tonsillitis | 29 | 7 (24.1) | 0,618 | 0,260 – 1,469 | 0,272 |
| Diarrhoea | 27 | 6 (22.2) | 0,554 | 0,220 – 1,392 | 0,203 |
| Leptospirosis | 9 | 1 (11.1) | 0,244 | 0,030 – 1,963 | 0,151 |
| Hepatitis | 7 | 3 (42.9) | 1,490 | 0,331 – 6,714 | 0,601 |
| Acute respiratory tract infection | 1 | 0 (0) | |||
| Others | 16 | 2 (12.5) | 0,276 | 0,062 – 1,227 | 0,071 |
* OR: odds ratio in logistic regression mode = (number of acute dengue/number of no acute dengue, among presumptive diagnosis)/(number of acute dengue/number of no acute dengue, among all other diagnoses)