Table 4 Univariable and multivariable analysis of risk factors for DR-TB in underweight TB cases

Age (years) (n = 1725/n = 385)

0–14

9 (0.52%)

2 (0.52%)

0.963 (0.203–4.557)

0.962

1.022 (0.213–4.898)

0.978

15–24

299 (17.33%)

69 (17.92%)

Reference

Reference

Reference

Reference

25–44

322 (18.67%)

71 (18.44%)

0.955 (0.662–1.379)

0.808

0.984 (0.68–1.424)

0.932

45–64

479 (27.77%)

128 (33.25%)

1.158 (0.835–1.605)

0.379

1.138 (0.813–1.594)

0.45

 > 65

616 (35.71%)

115 (29.87%)

0.809 (0.582–1.124)

0.206

0.789 (0.561–1.109)

0.173

Sex (n = 1734/n = 387)

Female

290 (16.72%)

49 (12.66%)

Reference

Reference

Reference

Reference

Male

1444 (83.28%)

338 (87.34%)

1.385 (1.001–1.917)

0.049*

1.458 (1.038–2.048)

0.030*

Cavity (n = 1566/n = 365)

No

896 (57.22%)

206 (56.44%)

Reference

Reference

Reference

Reference

Yes

670 (42.78%)

159 (43.56%)

1.032 (0.82–1.299)

0.787

1.019 (0.807–1.286)

0.875

Smoking (n = 1423/n = 302)

No

1046 (73.51%)

220 (72.85%)

Reference

Reference

Reference

Reference

Yes

377 (26.49%)

82 (27.15%)

0.77 (0.581–1.019)

0.067

1.157 (0.802–1.669)

0.434

Drinking (n = 1407/n = 301)

No

1108 (78.75%)

245 (81.4%)

Reference

Reference

Reference

Reference

Yes

299 (21.25%)

56 (18.6%)

0.841 (0.639–1.107)

0.216

0.686 (0.455–1.033)

0.071

Co-morbidity (n = 1734/n = 387)

No

1584 (91.35%)

358 (92.51%)

Reference

Reference

Reference

Reference

COPD

47 (2.71%)

7 (1.81%)

0.661 (0.297–1.474)

0.312

0.962 (0.32–2.892)

0.944

Diabetes

63 (3.63%)

13 (3.36%)

0.922 (0.502–1.693)

0.793

0.959 (0.517–1.779)

0.895

Hypertension

23 (1.33%)

6 (1.55%)

1.172 (0.474–2.897)

0.732

1.315 (0.522–3.316)

0.561

Other co-morbidity

97 (5.59%)

15 (3.88%)

0.68 (0.391–1.186)

0.174

0.746 (0.347–1.604)

0.454