Table 1.
Study population Demographical Data Distribution, N = 221
| All Years | 2017 | 2018 | 2019 | 2020 | ||
|---|---|---|---|---|---|---|
| 221 (100%) | 91 (41.2%) | 53(24%) | 62(28.1%) | 15(6.8%) | ||
| Sex | Male (n, %) | 115 (52%) | 54(59.3%) | 27 (23.5%) | 31 (26.9%) | 3 (2.6%) |
| Female | 106 (48%) | 37(34.9%) | 26 (24.5%) | 31(29.2%) | 12 (11.3%) | |
| Laterality | Unilateral | 185 (83.7%) | 80 (43.2%) | 42(22.7%) | 49 (26.5) | 14 (7.6%) |
| Bilateral | 36 (16.3%) | 11 (30.6%) | 11(30.6%) | 13 (36.1%) | 1 (2.8%) | |
| Family History | Yes | 11 (5%) | 6 (54.5%) | 3 (27.3%) | 2 (18.2%) | 0 (0%) |
| No | 210 (95%) | 85 (40.5%) | 50 (23.8%) | 60 (28.6%) | 15 (7.1%) | |
| RB Centers | Menelik II | 159 (71.9%) | 72 (45.3%) | 35 (22%) | 47 (29.6%) | 5 (3.1%) |
| Jimma University Hospital | 32 (14.5%) | 9 (28.1%) | 7 (21.9%) | 11 (34.4%) | 5 (15.6%) | |
| University of Gondar Hospital | 20 (9%) | 8 (40%0 | 6 (30%) | 3 (15%) | 3 (15%) | |
| Hawassa University Hospital | 10 (4.5%) | 2 (20%) | 5 (50%) | 1 (10%) | 2 (20%) | |
| Region of Origin | Tigray | 6 (2.7%) | 5 (83.3%) | 1 (16.7%) | 0 (0%) | 0 (0%) |
| Afar | 1 (0.5%) | 1 (100%) | 0 (0%) | 0 (0%) | 0 (0%) | |
| Amhara | 44 (19.9%) | 18 (40.9%) | 11 (25%) | 11 (25%) | 4 (9.1%) | |
| Oromia | 86 (38.9%) | 40(46.5%) | 17 (19.8%) | 25 (29%) | 4 (4.7%) | |
| Somali | 3 (1.4%) | 1 (33%) | 1 (33%) | 1 (33%) | 0 (0%) | |
| Benishangul Gumuz | 2 (0.9%) | 1 (50%) | 1 (50%) | 0(0%) | 0(0%) | |
| SNNPR | 32 (14.5%) | 7 (21.9%) | 11 (34.4%) | 10 (31.3%) | 4 (12.5%) | |
| Gambella | 7 (3.2%) | 4 (57.1%) | 1 (14.3%) | 2 (28.6%) | 0 (0%) | |
| Harari | 3 (1.4%) | 2 (66.7%) | 0 (0%0 | 1(33.3%0 | 0 (0%0 | |
| Addis Ababa | 37 (16.7%) | 12 (32.4%) | 10 (27%) | 12 (32.4%) | 3 (8.1%) |