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. Author manuscript; available in PMC: 2011 Mar 1.
Published in final edited form as: Infect Control Hosp Epidemiol. 2010 Jan;31(1):78–84. doi: 10.1086/649022

Table 4.

Univariate and Multivariable Models of Time to Sputum Culture Conversion

Univariate Analysis Multivariate Analysis
Variable HR (95% CI) p-value HR (95% CI) p-value
Age (year) 1.00 (0.99, 1.02) 0.40 -
Male sex 0.68 (0.42, 1.09) 0.12 -
Sputum smear grade* 0.53 (0.44, 0.67) 0.00 0.52 (0.40, 0.67) 0.00
Cavitation 0.57 (0.38, 0.87) 0.01 -
Bilateral lung involvement 1.29 (0.85, 1.95) 0.23 -
Drug resistance** 1.16 (0.56, 2.41) 0.69 2.30 (1.02, 5.21) 0.05
Tobacco use 1.11 (0.73, 1.68) 0.64 -
Alcohol abuse 0.91 (0.60, 1.38) 0.65 -
Diabetes mellitus 1.00 (0.46, 2.17) 1.0 -
HIV† infection 2.77 (0.99, 7.74) 0.09 -
*

1+ to 4+ scale;

**

To any 1st-line drug;

†

Human immunodeficiency virus