TABLE 1: Odds ratio and 95% confidence interval (CI) for the association between the classification of the symptoms in the snakebite victims and the age group, genus of snake, and the time interval victims received medical care after being bitten.
| Classification of the symptoms in the snakebite victims | |||
|---|---|---|---|
| Variables | Serious | Not serious | Odds ratio (CI95%) |
| N (%) | N (%) | ||
| Age group (Years) | |||
| < 1 | 13 (1.3) | 218 (1.5) | 1 |
| 1 a 10 | 86 (8.8) | 1,360 (9.1) | 1.06 (0.58 - 1.93) |
| 11 a 20 | 167 (17.1) | 3,152 (21.0) | 0.89 (0.49 - 1.59) |
| 21 a 30 | 170 (17.4) | 2,837 (18.9) | 1.01 (0.56 - 1.80) |
| 31 a 40 | 180 (18.4) | 2,534 (16.9) | 1.19 (0.67 - 2.13) |
| 41 a 50 | 126 (12.9) | 1,966 (13.1) | 1.08 (0.60 - 1.94) |
| 51 a 60 | 131 (13.4) | 1,551 (10.4) | 1.42 (0.79 - 2.55) |
| > 60 | 105 (10.7) | 1,362 (9.1) | 1.29 (0.71 - 2.34) |
| Genus | |||
| Bothrops | 436 (46.4) | 10,190 (74.1) | 1 |
| Crotalus | 479 (51.0) | 3,383 (24.6) | 3.31 (2.89 - 3.80) |
| Micrurus | 20 (2.1) | 94 (0.7) | 4.97 (3.04 - 8.13) |
| Lachesis | 5 (0.5) | 82 (0.6) | 1.42 (0.57 - 3.53) |
| Time interval for medical care (hours) | |||
| 0 - 1 | 154 (16.5) | 3,293 (23.1) | 1 |
| 1 - 3 | 267 (28.5) | 5,576 (39.1) | 1.02 (0.84 - 1.25) |
| 3 - 6 | 236 (25.2) | 2,963 (20.8) | 1.70 (1.38 - 2.10) |
| 6 - 12 | 84 (9.0) | 1,039 (7.3) | 1.73 (1.31 - 2.28) |
| 12 - 24 | 103 (11.0) | 749 (5.2) | 2.94 (2.26 - 3.82) |
| 24 + | 92 (9.8) | 658 (4.6) | 2.99 (2.28 - 3.92) |