Source of Support: None, Conflict of Interest: None
Bacteriological relapse is the best measure to determine the efficacy of any short course chemotherapeutic regimen. Using a relapse-prediction scoring (system, the successful outcome of a short course regimen (1 SHRZ + 5 H2 R2) in 300 pulmonary tuberculosis patients was investigated. The prognostic factors considered for the analysis were the radiographic extent of residual lung lesions and the persistent pulmonary cavities at the end of six-month chemotherapy and the speed of sputum culture conversion. The cumulative assessment of all the three prognostic factors had determined 93% of the relapses (Sensitivity) and 94% of the non-relapses (Specificity) correctly.