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| Factors affecting the five-year recurrence among successfully-treated pulmonary tuberculosis patients in Hengyang City |
| ZHOU Xu1, WANG Qiaozhi2, WAN Yanping2, PENG Weixiong1, LIU Jun1, HUANG Ying1, XU Zuhui2
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1. Hengyang Center for Disease Control and Prevention, Hengyang, Hunan 421001, China;
2. Hunan Chest Hospital, Changsha, Hunan 410013, China |
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Abstract Objective To investigate the recurrence of pulmonary tuberculosis patients 5 years after successful treatment in Hengyang City, Hunan Province, and to analyze its influencing factors. Methods The data of pulmonary tuberculosis patients who were successfully treated in Hengyang City in 2014 were collected through the tuberculosis management information system. The recurrence of pulmonary tuberculosis was defined as the endpoint, and all patients were observed for five consecutive years. Factors affecting recurrence of pulmonary tuberculosis were identified using Kaplan-Meier estimates, log-rank test and multivariable Cox proportional hazards regression analysis. Results A total of 6 626 patients with successfully treated pulmonary tuberculosis were included, including 4 961 males and 1 665 females, with a median age of 54 years. There were 536 cases with recurrence of pulmonary tuberculosis within five years, with a 8.09% cumulative proportion of recurrence and annual recurrence rate of 1.75 per 100 person-years. Multivariable Cox proportional hazards regression analysis showed that men ( HR=1.592, 95%CI: 1.256-2.019 ), age of 40 years and greater ( age of 40 to 59 years, HR=7.025, 95%CI: 1.739-28.377; age of 60 years and greater, HR=8.175, 95%CI: 2.024-33.023), farmers ( HR=1.379, 95%CI: 1.070-1.778 ), retreatment ( HR=6.398, 95%CI: 5.163-7.929 ) and positive etiology ( HR=1.255, 95%CI: 1.042-1.511 ) were risk factors for five-year recurrence of pulmonary tuberculosis among successfully-treated patients. Conclusions High recurrence rate is found among pulmonary tuberculosis patients within five years after successful treatment in Hengyang City. There is a high risk of pulmonary tuberculosis recurrence among male, etiologically positive, retreated farmers at ages of 40 years and older, and targeted interventions are recommended.
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Received: 24 August 2021
Revised: 27 December 2021
Published: 14 March 2022
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