T1able 5.
Conjunctival impression cytology | Urban Brazzaville | Urban Kouilou | All samples | |||
---|---|---|---|---|---|---|
MRDR | MRDR | MRDR | MRDR | MRDR | MRDR | |
≥0.06 | <0.06 | ≥0.06 | <0.06 | ≥0.06 | <0.06 | |
Abnormal (M-,D) | 20 | 2 | 14 | 2 | 34 | 4 |
Normal (M+,N) | 14 | 3 | 23 | 4 | 37 | 7 |
Sensitivity | 91% (20/22) | 88% (14/16) | 90% (34/38) | |||
x100 | x100 | x100 | ||||
Specificity | 15% (4/27) | 15% (4/27) | 16% (7/44) | |||
x100 | x100 | x100 | ||||
Positive predictive value | 59% | 38% | 90% |
D=Vitamin A-deficient;
M+=Marginal plus;
M-=Marginal minus; N=Normal