[Survival analysis of patients with pneumoconiosis from 1963 to 2014 in Yueyang].

OBJECTIVE: To know the incidence and survival rate of patients with pneumoconiosis in Yueyang and investigate the related factors of death hazard ratio.

METHODS: A total; of 1404 patients with pneumoconiosis were diagnosed and reported from 1963.1-2014.12. Log Rank method and Cox regression model were used to make the survival analysis.

RESULTS: The case fatality rate of pneumoconiosis was 24.57%,and rose with the increase of pneumoconiosis stage, the average course of disease was (14.7±8.7) years, the average age of death was (60.6±11.3) years, tuberculosis、Chronic cardiopulmonary disease and pneumonia were the top three cause of death for patients. The survival rates which included three stages of pneumoconiosis patients and the patients whether or not complicated with tuberculosis were significant statistical differences. Cox regression analysis revealed that the main impact. factors for the survival of patients with pneumoconiosis and the value of. the death hazard ratios (RR) of above seven factors were silicosis (2.28) 、the increase of pneumoconiosis stage (1.77) 、pneumoconiosis complicated with tuberculosis (1.29) 、the increase of stage promotion (1.20) 、the increase of age of the first contacting dust (1.08) 、the expansion of the scale of enterprise (0.55) and the later period of contacting dust (0.37).

CONCLUSION: Prevention of pneumoconiosis should focus on silicosis in Yueyang, the prevention and treatment of pneumoconiosis complicated with tuberculosis is an important means for improving the survival of patients.