Cost-effectiveness of point-of-care digital chest-x-ray in HIV patients with pulmonary mycobacterial infections in Nigeria

Table 1 Smear microscopy and chest-x-ray findings against the gold standard among patients with complete test outcomes

	Chest-x-ray diagnosis	Culture and Hain line probe assays
		M.tb		NTM		Negative
		N = 254		N = 65		N = 633
		n	%	n	%	n	%
HIV+ SS+	TB+	30	11.8	1	1.5	3	0.5
	TB±	3	1.2	1	1.5	0	0.0
	No pathology	1	0.4	0	0.0	1	0.2
HIV+ SS-	TB+	20	7.9	9	13.9	25	3.9
	TB±	10	3.9	9	13.9	78	12.3
	No pathology	5	2.0	6	9.2	17	2.7
HIV- SS+	TB+	119	46.8	3	4.6	19	3.0
	TB±	5	2.0	0	0.0	1	0.2
	No pathology	5	2.0	1	1.5	6	0.9
HIV- SS-	TB+	38	14.9	15	23.1	49	7.7
	TB±	11	4.3	14	21.5	202	31.9
	No pathology	7	2.8	6	9.2	232	36.7

M.tb Mycobacterium tuberculosis complex, NTM Non-tuberculous mycobacterium, SS+ Sputum smear microscopy positive, HIV+ Human immune deficiency virus positive, HIV- Human immune deficiency virus negative, TB+ Chest-x-ray signs consistent for TB, TB ± Chest-ray signs not consistent for TB.

ISSN: 1471-2334