Table 2. Joint involvement in patients with suspected CHIKV infection.
| IgG or IgM for CHIKV | ||||
|---|---|---|---|---|
|
Positivea
(n = 295) |
Negativeb
(n = 253) |
OR (CI) | p-value | |
| Arthralgia | ||||
| Symmetric (n: 382) | 240 (62.8%) | 142 (37.2%) | 3.41 (2.32–5.00) | <0.001 |
| Hands (n: 231) | 158 (68.4%) | 73 (31.6) | 2.84 (1.99–4.05) | <0.001 |
| Wrists (n: 137) | 93 (67.9%) | 44 (32.1%) | 2.18 (1.45–3.28) | <0.001 |
| Elbows (n: 111) | 74 (66.7%) | 37 (33.3%) | 1.95 (1.26–3.02) | 0.002 |
| Shoulders (n: 143) | 81 (56.6%) | 62 (43.4%) | ||
| Knees (n: 294) | 184 (62.6%) | 110 (37.4%) | 2.15 (1.53–3.03) | <0.001 |
| Ankles (n: 185) | 137 (74.1%) | 48 (25.9%) | 3.70 (2.51–5.46) | <0.001 |
| Feet (n: 155) | 104 (67.1%) | 51 (32.9%) | 2.15 (1.46–3.18) | <0.001 |
| Arthritis | ||||
| Symmetric (n: 96) | 90 (93.8%) | 6 (6.3%) | 18.07 (7.74–42.15) | <0.001 |
| Hands (n: 49) | 47 (95.9%) | 2 (4.1%) | 23.78 (5.71–98.98) | <0.001 |
| Wrists (n: 20) | 19 (95.0%) | 1 (5.0%) | 17.34 (2.30–130.52) | <0.001 |
| Elbows (n: 12) | 11 (91.7%) | 1 (8.3%) | 9.76 (1.25–76.13) | 0.008 |
| Shoulders (n: 9) | 9 (100.0%) | 0 (0.0%) | ||
| Knees (n: 25) | 22 (88.0%) | 3 (12.0%) | 6.71 (1.98–22.71) | <0.001 |
| Ankles (n: 50) | 47 (94.0%) | 3 (6.0%) | 15.79 (4.85–51.41) | <0.001 |
| Feet (n: 46) | 45 (97.8%) | 1 (2.2%) | 45.36 (6.20–331.61) | <0.001 |
CHIKV: chikungunya virus; IgM: immunoglobulin M; IgG: immunoglobulin G; OR: odds ratio; CI: 95% confidence interval.
afulfilled World Health Organization criteria for confirmed case of CHIKV; bdid not fulfil World Health Organization criteria for confirmed case of CHIKV.