T1able 5.

Sensitivity, specificity, and positive predictive values of conjunctival impression cytology with transfer compared to MRDR in pregnant and lactating Congolese women

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