Table 2.

Use and results of microbiological testing of sputum samples

	PTB, N = 36	PTB + EXTB, N = 25	EXTB, N = 33	P value
GXP (%)	26 (72%)	11 (44%)	8 (24%)	0.000*
GXP+ (%)	15/26 (58%)	3/11 (27%)	2/8 (25%)	0.15†
Smear (%)	6 (17%)	2 (4%)	2 (6%)	0.34†
Smear+ (%)	4/6 (67%)	0/2 (0%)	0/2 (0%)	0.33†
Culture (%)	6 (17%)	3 (12%)	4 (12%)	0.87†
Culture+ (%)	1/6 (17%)	1/3 (33%)	0/4 (0%)	0.69†
Total microbiological tests performed	29/36‡ (81%)	16/33 (48%)	14/25 (56%)	0.015*
Total microbiological tests +	17/29 (59%)	6/16 (38%)	5/14 (36%)	0.24*

EXTB = extrapulmonary tuberculosis; GXP = GeneXpert; PTB = pulmonary tuberculosis.

^*χ².

^†Fisher exact test.

^‡Five PTB patients received both sputum GXP and sputum smear, and four PTB patients received both sputum GXP and sputum culture.