From: Prevalence estimates of substandard drugs in Mongolia using a random sample survey
Rural
Urban
N
%
95% CI*
Failed assay
51
13.1
9.9, 16.9
55
6.5
4.9, 8.4
Passed assay
337
86.9
83.1, 90.1
793
93.5
91.6, 95.1
Total
388
100
848