| Characteristic | Incidence rate per 1000 population (95% CI) | p Value† | |
| 1994 ICARIS* | ICARIS-2 | ||
| Adults | |||
| Dog bites | |||
| Overall | 16.1 (12.1 to 20.0) | 16.6 (13.4 to 19.9) | 0.8262 |
| Sex | |||
| Male | 21.3 (14.9 to 27.7) | 19.0 (14.0 to 24.0) | 0.5765 |
| Female | 11.2 (6.6 to 15.9) | 14.4 (10.1 to 18.7) | 0.3210 |
| Age group (years) | |||
| 18–24 | 29.3 (13.3 to 45.3) | 30.2 (15.8 to 44.5) | 0.9374 |
| 25–34 | 19.7 (11.6 to 27.9) | 18.3 (10.3 to 26.3) | 0.7984 |
| 35–44 | 21.2 (10.8 to 31.6) | 13.4 (7.5 to 19.4) | 0.2035 |
| ⩾45 | 7.9 (4.0 to 11.8) | 13.8 (9.6 to 17.9) | 0.0453 |
| Medically attended bites | 2.0 (0.7 to 3.3) | 3.0 (1.6 to 4.5) | 0.3037 |
| Children | |||
| Dog bites | |||
| Overall | 24.5 (18.2 to 30.8) | 13.1 (9.8 to 16.3) | 0.0018 |
| Sex | |||
| Boys | 29.2 (20.4 to 38.0) | 12.7 (8.5 to 16.9) | 0.0010 |
| Girls | 20.0 (11.0 to 28.9) | 13.5 (8.6 to 18.5) | 0.2231 |
| Age group (years) | |||
| 0–4 | 24.9 (14.2 to 35.5) | 8.7 (3.9 to 13.5) | 0.0066 |
| 5–9 | 28.4 (17.0 to 39.7) | 18.7 (11.9 to 25.5) | 0.1516 |
| 10–14 | 21.0 (12.3 to 29.6) | 12.2 (7.0 to 17.4) | 0.0882 |
| Medically attended bites | 6.4 (3.6 to 9.2) | 3.2 (2.0 to 5.2) | 0.0470 |
*ICARIS, 1994 data previously published by Sacks et al.12
†The p value is based on a standard t test for the comparison of differences between two proportions within a single category of a characteristic (eg, males), across studies.