Region | Income before | Income after |
Maradi | 66,212 ± 55,989 | 209,086 ± 151,320 |
Zinder | 48,112 ± 44,059 | 98,471 ± 78,885 |
Average | 59,766 ± 52,751 | 169,510 ± 140,387 |
t-test | t = 5509; p < 0.05 | t = 13,458; p < 0.001 |