Table 4.

Association of sputum culture conversion status with treatment outcomes

Month of treatment	Treatment outcome death + failure cure		Odds ratio (95% CI)	P value*	Sensitivity (95% CI)	Specificity (95% CI)
2-month				< 0.001	64.1 (58.69–69.32)	67.7 (57.53–76.73)
Did not convert	67 (67.7)	118 (35.9)	Reference
Converted	32 (32.3)	211 (64.1)	3.74 (2.32–6.03)
4-month				< 0.001	93.0 (89.69–95.52)	51.5 (41.25–61.68)
Did not convert	51 (51.5)	23 (7.0)	Reference
Converted	48 (48.5)	306 (93.0)	14.13 (7.92–25.21)
6-month				< 0.001	97.6 (95.27–98.94)	44.4 (34.45–54.78)
Did not convert	44 (44.4)	8 (2.4)	Reference
Converted	55 (55.6)	321 (97.6)	32.10 (14.34–71.85)

CI = confidence interval.

^*Univariate binary logistic regression analysis.