From: Clinical and epidemiologic evaluation of a 2020 chikungunya outbreak in Cambodia
Parameter | Total tested | Positive | Negative | Sig | OR (95% CI) | ||
---|---|---|---|---|---|---|---|
N | % | N | % | ||||
Number of subjects | 1194 | 331 | 27.7 | 863 | 72.3 | Â | Â |
Month | |||||||
 January | 147 | 19 | 12.9 | 128 | 87.1 | < 0.001 |  |
 February | 140 | 40 | 28.6 | 100 | 71.4 |  | |
 March | 134 | 36 | 26.9 | 98 | 73.1 |  | |
 April | 94 | 25 | 26.6 | 69 | 73.4 |  | |
 May | 97 | 39 | 40.2 | 58 | 59.8 |  | |
 June | 51 | 4 | 7.8 | 47 | 92.2 |  | |
 July | 125 | 32 | 25.6 | 93 | 74.4 |  | |
 August | 102 | 35 | 34.3 | 67 | 65.7 |  | |
 September | 77 | 21 | 27.3 | 56 | 72.7 |  | |
 October | 91 | 29 | 31.9 | 62 | 68.1 |  | |
 November | 71 | 28 | 39.4 | 43 | 60.6 |  | |
 December | 65 | 23 | 35.4 | 42 | 64.6 |  | |
Season | |||||||
 Rainy season (May–Oct) | 543 | 160 | 29.5 | 383 | 70.5 | 0.220 | 1.2 (0.9–1.5) |
 Dry season (Nov–Apr) | 651 | 171 | 26.3 | 480 | 73.7 | ||
Site | |||||||
 Battambang | 88 | 7 | 8.0 | 81 | 92.0 | < 0.001 |  |
 Kampong Speu | 303 | 60 | 19.8 | 243 | 80.2 |  | |
 Kandal | 507 | 166 | 32.7 | 341 | 67.3 |  | |
 Kratie | 193 | 82 | 42.5 | 111 | 57.5 |  | |
 Preah Vihear | 61 | 8 | 13.1 | 53 | 86.9 |  | |
 Sihanoukville | 42 | 8 | 19.0 | 34 | 81.0 |  | |
Area | |||||||
 Urban | 810 | 226 | 27.9 | 584 | 72.1 | 0.844 | 1.0 (0.8–1.4) |
 Rural | 384 | 105 | 27.3 | 279 | 72.7 | ||
Age | |||||||
 Mean (SD) | 25.7 (± 17.8) | 28.3 (± 17.3) |  | 24.7 (± 17.9) |  | 0.002 |  |
 Median | 22.5 | 25.0 |  | 21.0 |  |  |  |
 IQR | 11–38 | 14–40 |  | 10–36 |  |  |  |
Age group | |||||||
 Adult (age ≥ 18 years) | 712 | 234 | 32.9 | 478 | 67.1 | < 0.001 | 1.9 (1.5–2.6) |
 Children | 482 | 97 | 20.1 | 385 | 79.9 | ||
 02–05 years | 118 | 20 | 16.9 | 98 | 83.1 | < 0.001 |  |
 06–17 years | 364 | 77 | 21.2 | 287 | 78.8 |  | |
 18–45 years | 510 | 176 | 34.5 | 334 | 65.5 |  | |
 46–65 years | 174 | 48 | 27.6 | 126 | 72.4 |  | |
 > 65 years | 28 | 10 | 35.7 | 18 | 64.3 |  | |
Gender | |||||||
 Male | 589 | 168 | 28.5 | 421 | 71.5 | 0.543 | 1.1 (0.8–1.4) |
 Female | 605 | 163 | 26.9 | 442 | 73.1 | ||
Education | |||||||
 No education | 648 | 183 | 28.2 | 465 | 71.8 | 0.413 |  |
 Primary | 238 | 58 | 24.4 | 180 | 75.6 | ||
 Secondary and higher | 308 | 90 | 29.2 | 218 | 70.8 | ||
Occupation | |||||||
 Employed | 182 | 51 | 28.0 | 131 | 72.0 | 0.915 | 1.0 (0.7–1.4) |
 Unemployed | 1012 | 280 | 27.7 | 732 | 72.3 | ||
Symptom | |||||||
 Fever (100%) | 1194 | 331 | 27.7 | 863 | 72.3 | – | – |
 Headache | 1153 | 323 | 28.0 | 830 | 72.0 | 0.235 | 1.6 (0.8–3.7) |
 Sore throat | 927 | 244 | 26.3 | 683 | 73.7 | 0.05 | 0.7 (0.5–1.0) |
 Chills | 885 | 259 | 29.3 | 626 | 70.7 | 0.042 | 1.4 (1.1–1.8) |
 Cough | 877 | 219 | 25.0 | 658 | 75.0 | < 0.001 | 0.6 (0.5–0.8) |
 Malaise | 815 | 223 | 27.4 | 592 | 72.6 | 0.682 | 0.9 (0.7–1.2) |
 Muscle aches | 493 | 151 | 30.6 | 342 | 69.4 | 0.061 | 1.3 (1.0–1.7) |
 Joint pain | 332 | 109 | 32.8 | 223 | 67.2 | 0.015 | 1.4 (1.1–1.9) |
 Nausea | 255 | 106 | 41.6 | 149 | 58.4 | < 0.001 | 2.3 (1.7–3.0) |
 Vomit | 132 | 57 | 43.2 | 75 | 56.8 | < 0.001 | 2.2 (1.5–3.2) |
 Abdominal cramp | 67 | 18 | 26.9 | 49 | 73.1 | 0.887 | 1.0 (0.5–1.7) |
 Shortness of breath | 65 | 17 | 26.2 | 48 | 73.8 | 0.787 | 0.9 (0.5–1.6) |
 Lesion | 62 | 36 | 58.1 | 26 | 41.9 | < 0.001 | 3.9 (2.3–6.7) |
 Rash | 32 | 10 | 31.3 | 22 | 68.8 | 0.643 | 1.2 (0.6–2.5) |
 Diarrhea | 31 | 9 | 29.0 | 22 | 71.0 | 0.851 | 1.1 (0.5–2.3) |
 Seizure | 10 | 1 | 10.0 | 9 | 90.0 | 0.225 | 0.3 (0.1–1.8) |
 Bloody urine | 1 | 1 | 100.0 | 0 | 0.0 | – | – |
 Bleeding | 1 | 0 | 0.0 | 1 | 100.0 | – | – |
 Jaundice | 1 | 1 | 100.0 | 0 | 0.0 | – | – |