Table 1. Distribution of socio-demographics, patient types, physical parameters, microscopic features, X-ray findings and drug resistance patterns among PTB patients in tertiary care hospitals of Kolkata, India, 2010–2013 (N = 350).

Continuous Variables		n	Mean (95% CI)
Body mass index (kg/m2)		350	19.24 (19.07–19.41)
Blood hemoglobin level (gm/dl)		350	10.68 (10.52–10.85)
Categorical Variables	Categories	n	Percentage (95% CI)
Gender	Male	250	71.43 (66.67–76.18)
	Female	100	28.57 (23.82–33.33)
Age	<20 Yrs	48	13.71 (10.09–17.35)
	20–45 Yrs	253	72.29 (67.57–77.00)
	>45 Yrs	49	14.00 (10.35–17.65)
Marital Status	Married	275	78.57 (74.25–82.89)
	Unmarried	75	21.43 (17.11–25.75)
Socio-economic status	LIG	303	86.57 (82.98–90.16)
	MIG	45	12.86 (9.33–16.38)
	HIG	2	0.57 (0.00–1.37)
Resident of	North 24 Parganas	13	3.71 (1.72–5.71)
	South 24 Parganas	56	16.00 (12.14–19.85)
	Kolkata	281	80.29 (76.10–84.47)
Patient type	New Infection	110	31.43 (26.54–36.32)
	Relapsed	154	44.00 (38.77–49.23)
	Defaulter	54	15.43 (11.63–19.23)
	Treatment failure	32	9.14 (6.11–12.18)
Sputum smear grade	Scanty	0	0
	Single positive	165	47.14 (41.89–52.40)
	Double positive	157	44.86 (39.62–50.09)
	Triple positive	28	8.00 (5.14–10.86)
X Ray Findings	Minimal	126	36.00 (30.95–41.05)
	Moderately advanced	132	37.71 (32.61–42.82)
	Far advanced	60	17.14 (13.18–21.11)
	Cavity	32	9.14 (6.11–12.18)
Multiple allele specific PCR for detection of drug resistance	Multi-drug resistance	43	12.29 (8.83–15.74)
	Non-MDR two drug resistance	202	57.71 (52.51–62.92)
	Only Isoniazide resistance*	20	5.71 (3.27–8.16)
	Only Rifampicin resistance*	15	4.29 (2.15–6.42)
	Only Ethambutol resistance*	7	2.00 (0.53–3.47)
	Susceptible	63	18.00 (13.96–22.04)

N = Total number of subjects in the study; n = Number of subjects in different categories.

CI = Confidence interval; LIG = Low-income group; MIG = Middle-income group; HIG = High-income group *Total number of single drug resistant cases = 42.