Table 3. The early clinical features and outcomes of dengue, OFI and influenza.
| Dengue N = 250 | OFI N = 1879 | RR (95% C.I.) | P value | Influenza N = 228 | RR (95% C.I.) | P value | |
| Drowsiness (%) | 148 (59.2) | 971 (51.7) | 1.1 (1.0–1.3) | 0.03 | 126 (55.3) | 1.1 (0.9–1.3) | NS |
| Headache (%) | 200 (80.0) | 1290 (68.7) | 1.2 (1.1–1.3) | 0.0003 | 176 (77.2) | 1.0 (0.9–1.1) | NS |
| Myalgia (%) | 173 (69.2) | 1197 (63.7) | 1.1 (1.0–1.2) | NS | 149 (65.4) | 1.1 (0.9–1.2) | NS |
| Arthralgia (%) | 152 (60.8) | 800 (42.6) | 1.4 (1.3–1.6) | <0.0001 | 82 (36.0) | 1.7 (1.4–2.0) | <0.0001 |
| Loss of appetite (%) | 203 (81.2) | 1126 (59.9) | 1.4 (1.3–1.5) | <0.0001 | 146 (64.0) | 1.3 (1.1–1.4) | <0.0001 |
| Abdominal pain (%) | 29 (11.6) | 276 (14.7) | 0.8 (0.5–1.1) | NS | 34 (14.9) | 0.8 (0.5–1.2) | NS |
| Diarrhea (%) | 37 (14.8) | 175 (9.3) | 1.6 (1.1–2.2) | 0.0091 | 12 (5.3) | 2.8 (1.5–5.3) | 0.0008 |
| Nausea (%) | 125 (50.0) | 543 (28.9) | 1.7 (1.5–2.0) | <0.0001 | 75 (32.9) | 1.5 (1.2–1.9) | 0.0002 |
| Vomiting (%) | 41 (16.4) | 158 (8.4) | 2.0 (1.4–2.7) | <0.0001 | 17 (7.5) | 2.2 (1.3–3.8) | 0.0031 |
| Altered taste (%) | 203 (81.2) | 1070 (56.9) | 1.4 (1.3–1.5) | <0.0001 | 143 (62.7) | 1.3 (1.2–1.5) | <0.0001 |
| Retro-orbital pain (%) | 65 (26.0) | 298 (15.9) | 1.6 (1.3–2.1) | <0.0001 | 50 (21.9) | 1.2 (0.9–1.6) | NS |
| Rashes (%) | 24 (9.6) | 67 (3.6) | 2.7 (1.7–4.2) | <0.0001 | 0 | Infinity | <0.0001 |
| Bleeding (%) | 13 (5.2) | 33 (1.76) | 3.0 (1.6–5.6) | 0.0010 | 6 (2.6) | 2.0 (0.8–5.1) | NS |
| Aural temp °C∧ | 38.3 (37.7–39.0) | 38.0 (37.3–38.5) | - | <0.000* | 38.4 (38.0–38.9) | - | NS* |
| Total days of illness∧ | 10 (7–14) | 5 (3–7) | - | <0.0001* | 6 (4–7) | - | <0.0001* |
| Hospitalized (%) | 116 (46.4) | 26 (1.4) | 33.5 (22.4–50.2) | <0.0001 | 2 (0.9) | 52.9 (13.2–211.6) | <0.0001 |
∧Shown are median values with the 25th and 75th percentiles in parentheses.
Chi-square test with Yates' continuity correction was used except where indicated. *Mann Whitney U test.
*Mann Whitney U test.