Table 4.

Multivariate logistic regression analysis for factors associated with sputum AFB culture conversion at 2 months and recurrence rate within 1 year in patients in whom have cavity

Variable	AFB culture conversion at 2 months		Recurrence rate within 1 year
	OR (95% CI)	p value	OR (95% CI)	p value
Age	1.05 (0.99–1.11)	0.10
Metformin	10.80 (1.22–95.63)	0.03	0.73 (0.13–4.10)	0.72
Previous TB history	1.24 (0.10–15.16)	0.87	2.93 (0.41–21.11)	0.29
AFB smear grade (ref. 0)
Grade 1 vs. 0	12.10 (0.39–378.51)	0.16	1.53 (0.14–16.68)	0.73
Grade 2 vs. 0	0.37 (0.02–6.33)	0.49	1.32 (0.10–17.63)	0.83
Grade 3 vs. 0	0.98 (0.06–15.12)	0.99	2.95 (0.34–25.71)	0.33
Grade 4 vs. 0	0.08 (0.01–1.00)	0.05	2.90 (0.32–26.09)	0.34
Drug resistance	0.02 (0.00–0.66)	0.03	1.21 (0.14–10.78)	0.86

AFB, acid-fast bacilli; OR, odds ratio; CI, confidence interval; TB, tuberculosis.