Background: Tuberculosis (TB) primarily targets the lungs and stands as the leading cause of death globally among diseases 
caused by a single agent. It is estimated that one-third of the world›s population is infected with TB. This study was undertaken 
due to the significant presence and incidence of TB in Zabol, an endemic city in Iran.
Methods: We examined patient records (n=4092) spanning from 2006 to 2014, analyzing the data using SPSS. The Kaplan-Meier 
model was employed to assess patient survival rates, the Cox regression model helped identify factors affecting survival and 
mortality, and the classic Mantel-Haenszel method was utilized to calculate the mortality rate.
Results: The patients’ mean age was 53.97 years, with a standard deviation of 20.55. Females comprised 59.78% of the study 
population, and 84.93% of the TB cases were pulmonary. Furthermore, 89.85% of the patients underwent successful treatment. 
Throughout the study period, there were 240 recorded deaths among TB patients. The average survival duration for patients was 
2638 days, with a five-year survival rate of 75%. An increase in age every 10 years significantly raised the risk of death among TB 
patients (P<0.05). However, no significant impact on patient survival was observed in relation to other variables, such as gender, 
history of recurrence, treatment delay, place of conflict, residency, and nationality.
Conclusion: The findings of this study can provide useful information so that planners and health officials can take effective 
measures with appropriate interventions in order to diagnose the disease faster and follow up with appropriate treatment.