| Authors | Period | Number of cases | Average of PSA t (ng/ml) |
| Jalloh et al. [15] | 2015-2016 | 67 | 94.07 |
| Loko et al. [17] | 2008 | 250 | 241.7 |
| Kabore et al. [16] | 2009-2010 | 166 | 537 |
| Niang et al. [7] | 2004-2010 | 164 | 1447.57 |
| Our study | 2013-2021 | 654 | 867 |