Table 4 Literature Review
| Authors |
Atalel F. Current study | M. Demssie | Roggo | Frazee | Welchi | Veaz-Zadah |
|---|---|---|---|---|---|---|
| Study Place | DGH, Ethiopia | Southern, Ethiopia | Bosten | Rochester MN | Glasgow UK | Iran |
| Study period | Jan1,2016-Dec31, 2019 | June 1992toMay 1996 | 1980–1990 | 1975–1984 | 1965–1980 | 1962–1965 |
| Duration Years | 4 | 4 | 10 | 10 | 15 | 5 |
| No of patients | 148 | 98 | 35 | 57 | 53 | 41 |
| Annual occurs | 37 | 24.5 | 3.5 | 5.7 | 3.5 | 8.2 |
| Male to Female | 5.4:1 | 8.8:1 | 1:1.2 | 1:1 | 1:1.12 | 9.25:1 |
| Mean age | 41.14 | 34.1 | 67 | 59 | 54 | 42 |
| Primary SBV(% | 100 | 94.9 | 14 | 11 | 30 | 80 |
| Secondary SBV(*% | 0 | 5.1 | 86 | 89 | 70 | 20 |
| Gangrenous SBV(% | 16.9 | 28.7 | 46 | 49 | 43 | – |
| Overall Mortality | 3.4 | 13.3 | 9 | 12 | 28 | 15 |
| Viable SBV | 2.4 | 8.3 | 0 | 3 | 11 | – |
| Gangrenous SBV | 8 | 25.9 | 17 | 21 | 47 | – |
