Table 4 Association of symptoms and chikungunya IgM seropositivity
| Â | Â | Â | Â | Univariate analysis | Multivariate analysis | ||
|---|---|---|---|---|---|---|---|
Symptoms | n | Positive % (n) | Negative % (n) | OR (95 % CI) | p-value | OR (95 % CI) | p-value |
Fever | Â | Â | Â | Â | Â | Â | Â |
 Yes | 381 | 36.3 (49) | 38.2 (332) | 0.92 (0.63–1.34) | 0.6 | - | - |
 No | 622 | 63.7 (86) | 61.8 (536) | Reference |  |  |  |
Rash | Â | Â | Â | Â | Â | Â | Â |
 Yes | 9 | 0 (0) | 1.0 (9) | - | - | - | - |
 No | 994 | 100 (135) | 99.0 (859) | Reference |  |  |  |
Nausea | Â | Â | Â | Â | Â | Â | Â |
 Yes | 83 | 7.4 (10) | 8.4 (73) | 0.87 (0.43–1.73) | 0.6 | - | - |
 No | 920 | 92.6 (125) | 91.6 (795) | Reference |  |  |  |
Headache | Â | Â | Â | Â | Â | Â | Â |
 Yes | 451 | 68.1 (92) | 41.1 (359) | 3.03 (2.06–4.46) | <0.001 | 2.90 (1.88–4.48) | <0.001 |
 No | 522 | 31.9 (43) | 58.6 (509) | Reference |  | Reference |  |
Joint pain | Â | Â | Â | Â | Â | Â | Â |
 Yes | 381 | 50.4 (68) | 36.1 (313) | 1.80 (1.25–2.59) | 0.002 | 1.09 (0.72–1.65) | 0.6 |
 No | 622 | 49.6 (67) | 63.9 (555) | Reference |  | Reference |  |