Table 4: Distribution of direct costs according to the different items of expenditure (n = 42).

 Cost distribution in the total population (n = 42) Mean ± SD*(XAF**) Median (XAF) [Min-Max] in XAF % of total cost Cost of para-clinical examinations 81,255.9 ± 45,192 73,500 [8,000-211,250] 17.8 Cost of complications treatment 1,635.9 ± 7,806 0 [0-50,010] 0.4 Cost of dialysis treatment 48,090.8 ± 177,493 0 [0-994,525] 10.6 Cost of etiology treatment 156,237.7 ± 187,513 87,175 [22,850-687,160] 34.3 Other intra hospital costs 168,224.4 ± 98,327 141,010 [43,855-501,065] 36.9 Total 455,445.8 ± 383,293 335,815 [54,705-2,444,010] 100 Breakdown of costs in the "non-dialysis" subgroup (n = 38) Cost of para-clinical examinations 72,710.5 ± 37,031 65,500 [8,000-186,750] 19 Cost of complications treatment 103.0 ± 638 0 [0-3,930] 1 Cost of dialysis treatment / / / / Cost of etiology treatment 139,548.8 ± 172,790 78,200 [2,850-687,160] 37 Other intra hospital costs 158,655.7 ± 98,108 135,805 [43,855-501,065] 42 Total 371,018.5 ± 261,387 283,687 [58,635-1,378,905] 100 Distribution of costs in the subgroup of "dialysis patients" (n = 4) Cost of para-clinical examinations 162,438 ± 35,884 153,000 [132,500-211,250] 12.9 Cost of complications treatment Cost of complications treatment 6,590 [1,590-50,010] 1.3 Cost of dialysis treatment 504,954 ± 350,656 430,910 [163,470-994,525] 40.2 Cost of etiology treatment 314,783 ± 274,341 284,360 [29,450-660,960] 25.0 Other intra hospital costs 259,126 ± 35,294 254,910 [220,865-305,820] 20.6 Total 1,257,495.0 ± 466,009 1,431,777 [547,875-2,222,565] 100

*SD: Standard deviation; Min: Minimum; Max: Maximum; **XAF: CFA franc of central africa (XAF).