Skip directly to site content Skip directly to page options Skip directly to A-Z link Skip directly to A-Z link Skip directly to A-Z link
Volume 23, Number 3—March 2017

Comparison of Sputum-Culture Conversion for Mycobacterium bovis and M. tuberculosis

Colleen ScottComments to Author , Joseph S. Cavanaugh, Benjamin J. Silk, Julia Ershova, Gerald H. Mazurek, Philip A. LoBue, and Patrick K. Moonan
Author affiliations: Centers for Disease Control and Prevention, Atlanta, Georgia, USA

Main Article

Table 2

Hazard ratios for time to sputum-culture conversion among tuberculosis patients with pulmonary diagnoses, United States, 2006–2013*

Factor Unadjusted HR (95% CI) Adjusted HR (95% CI)
Cause of tuberculosis
Mycobacterium bovis 1.18 (1.05–1.34) 1.18 (1.04–1.33)
M. tuberculosis
Treatment administration type
Directly observed therapy 1.08 (1.05–1.11) 1.12 (1.09–1.15)
F 1.17 (1.14–1.20) 1.15 (1.12–1.18)
Bacillary burden†
Low 1.61 (1.56–1.66) 1.68 (1.63–1.74)
Medium 1.25 (1.22–1.29) 1.32 (1.29–1.36)
High Referent Referent

*HR, hazard ratio.
†A bacillary burden composite variable was created by using smear status and radiographic evidence of cavitation. Patients with unknown bacillary burden were excluded from analyses.

Main Article

Page created: February 17, 2017
Page updated: February 17, 2017
Page reviewed: February 17, 2017
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.