Table 1. Baseline clinical and microbiological characteristics of MDR-TB patients.

	Culture Negative (n = 9)		Culture Positive Fast Responder (n = 19)		Culture Positive Slow Responder (n = 22)		P§
Median Age, years (IQR)	47	(25.5–59)	37	(26–45)	27	(22–49)
Female	3	(37.5%)	10	(52.6%)	8	(36.4%)	0.2325
Prior TB Treatment	8	(100%)	16	(84.2%)	22	(100%)	0.0909
Sputum AFB Smear
0 or scanty	8	(100%)	8	(44.4%)	4	(19.0%)	0.0707
1+	0	-	4	(22.2%)	3	(14.3%)
2+	0	-	3	(16.7%)	2	(9.5%)
3+	0	-	3	(16.7%)	12	(57.1%)
Lung involvementa
None	4	(50.0%)	1	(5.6%)	0	-	0.4543
Unilateral	1	(12.5%)	3	(16.7%)	6	(30.0%)
Bilateral	3	(37.5%)	14	(77.8%)	14	(70.0%)
Cavitationa
No	8	(100.0%)	6	(33.3%)	2	(10.0%)	0.0860
Yes	0	-	12	(66.7%)	18	(90.0%)
BMI
< 18.5	3	(37.5%	5	(27.8%)	12	66.7%)	0.0888
18.5–24.9	3	(37.5%)	9	(50.0%)	5	27.8%)
25–29.9	1	(12.5%)	4	(22.2%)	1	5.6%)
≥ 30	1	(12.5%)	0	-	0	-
FQN resistant	-		3	(15.8%)	5	(22.7%)	0.4378
PZA resistant	-		12	(85.7%)	13	(68.4%)	0.2340
Avg # effective drugs
<4	-		18	(94.7%)	16	(72.7%)	0.1335
4 to <5	-		1	(5.3%)	5	(22.7%)
5 to <6	-		0	-	1	(4.5%)
≥6	-		0		0	-
Avg # potentially effective drugs
<4	-		1	(5.3%)	0	-	0.3724
4 to <5	-		4	(21.1%)	3	(13.6%)
5 to <6	-		11	(57.9%)	11	(50.0%)
≥6	-		3	(15.8%)	8	(36.4%)
Months of PZA+FQN+CFZ
<6	-		3	(15.8%)	3	(13.6%)	0.4778
6 to 9	-		11	(57.9%)	9	(40.9%)
>9	-		5	(26.3%)	10	(45.5%)

AFB: Acid Fast Bacilli. BMI: Body mass index.

^a Based on chest X-ray reviews.

§ Fast vs Slow Responders