Annual injury rates per 1000 person-years by recall period and severity of injury (n = 15 223)
| Recall month | Person-years | Minor injuries | Severe injuries | ||||
|---|---|---|---|---|---|---|---|
| No | Rate (95% CI) | No | Rate (95% CI) | ||||
| Dar es Salaam (urban) | |||||||
| 1 | 1023 | 46 | 44.9 (32.9 to 59.9) | 3 | 2.9 (0.6 to 8.6) | ||
| 2 | 678 | 12 | 17.7 (9.1 to 30.9 | 5 | 7.4 (2.4 to 17.2) | ||
| 3–7 | 3371 | 44 | 13.1 (9.5 to 17.5) | 31 | 9.2 (6.2 to 13.1) | ||
| 8–12 | 3343 | 36 | 10.8 (7.5 to 14.9) | 29 | 8.7 (5.8 to 12.5) | ||
| Hai (rural) | |||||||
| 1 | 879 | 84 | 95.6 (76.2 to 118.3) | 4 | 4.6 (1.2 to 11.7) | ||
| 2 | 579 | 30 | 51.8 (34.9 to 73.9) | 11 | 18.9 (9.5 to 33.9) | ||
| 3–7 | 2854 | 80 | 28.0 (22.2 to 34.9) | 35 | 12.3 (8.5 to 17.1) | ||
| 8–12 | 2821 | 40 | 14.2 (10.1 to 19.3) | 19 | 6.7 (4.1 to 10.5) | ||