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Table 3 Factors associated with the presence of viable M. tuberculosis bacilli on sputum smear reversion in multivariate analysis.

From: Predicting results of mycobacterial culture on sputum smear reversion after anti-tuberculous treatment: a case control study

Characteristics Episodes no. Cul (+) for Mtb OR (95% CI.)
Any TB drug resistance Yes 20 11 (55%) 10.33 (1.47-72.60)
  No 54 11 (20%)  
Mycobacterial load at reversion Medium or high 21 11 (52%) 16.74 (0.95-296.48)
  Low 53 11 (21%)  
Timing of Sm reversion after treatment ≤ 2 months 14 9 (64%) 16.31 (2.02-131.64)
  > 2 months 60 13 (22%)  
Sm reversion before Cul conversion Yes 28 17 (61%) 29.55 (4.07-214.72)
  No 46 5 (11%)  
Findings of chest film at Sm reversion Not improved 46 19 (41%) 23.57 (2.49-223.38)
  Improved 28 3 (11%)  
  1. Abbreviation: Cul, culture; Mtb, Mycobacterium tuberculosis; Sm, smear; TB, tuberculosis
  2. The details of multivariate analysis were listed in Additional file 2: Table S1.