Table 2. Comparison of methods of diagnosis in MDR-TB cases and controls.

Variable	Group	MDR-TB N (%)	Controls N (%)	P-value
Sputum AFB	Negative	9 (29%)	12 (38%)	0.6
	Positive	22 (71%)	20 (62%)
GW AFB	Negative	12 (55%)	13 (57%)	1
	Positive	10 (45%)	10 (43%)
BAL AFB	Negative	5 (45%)	14 (78%)	0.11
	Positive	6 (55%)	4 (22%)
FNA AFB	Negative	5 (100%)	16 (73%)	0.56
	Positive	0 (0%)	6 (27%)
Asymptomatic	No	33 (85%)	78 (93%)	0.19
	Yes	6 (15%)	6 (7%)
RpoB mutation	No	0 (0%)	12 (100%)	<0.001
	Yes	14 (100%)	0 (0%)
Time to rpoB diagnosis	NA	9 (8, 26)*	8 (6, 10)*	0.11
Time to culture sensitivity diagnosis	NA	51 (42, 71)*	56 (46, 79)*	0.1

^*Median (inter-quartile range (IQR)).

AFB = acid fast bacilli, GW = gastric washing, BAL = bronchoalveolar lavage.

FNA = fine needle aspiration of a lymph node/TB mass.

NA = Not applicable.