Number and estimated incidence of drowning deaths over a 2 year recall period from eight Tanzanian lakeside communities
| Total drowning deaths | Deaths among fishermen | Deaths among children (≤16 y) | 2012 census population estimate | Census-derived 2016 population estimate*† | Person-time at risk (years)‡ | Incidence per 100 000 person-years | |
| Island communities | |||||||
| Ghana | 13 | 10 (77%) | 1 (8%) | 3000 | 3377 | 6753 | 192 |
| Kasenyi | 11 | 9 (82%) | 1 (9%) | 4436 | 4993 | 9986 | 110 |
| Chakazimbwe | 6 | 5 (83%) | 1 (17%) | 1500 | 1688 | 3377 | 178 |
| Bezi Kisiwani | 2 | 2 (100%) | 0 (0%) | 1889 | 2126 | 4252 | 47 |
| Chifule Ukara | 11 | 8 (73%) | 2 (18%) | 1253 | 1410 | 2821 | 390 |
| Mainland communities | |||||||
| Kijiweni | 28 | 26 (93%) | 1 (4%) | 992 | 1117 | 2233 | 1253 |
| Kayenze | 5 | 2 (40%) | 1 (20%) | 2800 | 3151 | 6303 | 79 |
| Ruhanga | 10 | 8 (80%) | 2 (20%) | 1700 | 1913 | 3827 | 261 |
| All communities | |||||||
| Overall | 86 | 70 (81%) | 9 (10%) | 17 570 | 19 775 | 39 550 | 217 |
*Assuming 3% annual population growth between 2012 and 2016.
†Community-derived 2016 population estimates were as follows: Ghana = 3500; Kasenyi = 3225; Chakazimbwe = 2000; Bezi Kisiwani = 2600; Chifule Ukara = 2000; Kijiweni = 2645; Kayenze = 3551; Ruhanga = 2000; Total = 21 521.
‡ Calculated as the 2012 census population estimate with a 3% population growth factor applied for 4 years (to 2016), multiplied by the 2-year recall period, and rounded to the nearest whole number.