Abstract:

Objective To explore the epidemiological characteristics of pulmonary tuberculosis in Ganzi Tibetan Autonomous Prefecture from 2014 to 2018, providing scientific evidence for further prevention and control.Methods Descriptive statistics was employed for epidemiological characteristics analysis of pulmonary tuberculosis patients who were registered in 18 counties of Ganzi Tibetan Autonomous Prefecture (Ganzi) in the Infectious Disease Reporting and Information Management System from 2014—2018.Results Totally 13017 pulmonary tuberculosis cases were reported in Ganzi during the period of 2014—2018. The annual incidence declined from 194.13/100000 (2937/1124929) in 2014 to 261.08/100000 (2303/1186298) in 2018, and the reported annual incidence showed a downward trend (χ ²=114.99, P<0.01). The average annual incidence of the highest five districts were Shiqu (410.28/100000, 1813/441898), Yajiang (399.74/100000, 1059/264922), Baiyu (391.68/100000, 1167/297944), Ganzi (337.17/100000, 1231/365096) and Litang (286.19/100000, 1045/365144). The incidence of male (240.21/100000, 7131/2968651) was significantly higher than that of the female (208.00/100000, 5886/2829811) (χ ²=31200.06, P<0.01). The highest incidence was the age group of 15~ years old (545.55/100000, 2357/432045). Farmers (48.50%, 6313/13017), herdsmen (14.55%, 1894/13017) and students (14.33%, 1865/13017) were the top three occupational groups.Conclusion Although the annual incidence showed a downward trend, it still high in Ganzi Tibetan Autonomous Prefecture. Counties located in Northwest and high elevation were the high-incidence regions, and the farmers, herdsmen and students were the high-incidence populations.

Key words: Tuberculosis,pulmonary, Incidence, Epidemiologic study characteristics as topic, Small-area analysis, Data interpretation,statistical