Applied Study and Case Report
Epidemiological characteristics and survival analysis of reported pneumoconiosis in Chengdu, 2012-2021
Kuang Dan, Peng Qi, Gao Yuan, Wang Lin, Yang Xiaosong
Published 2023-12-20
Cite as Chin Ind Hyg Occup Dis, 2023, 41(12): 922-926. DOI: 10.3760/cma.j.cn121094-20221008-00466
Abstract
ObjectiveTo explore theepidemiological characteristics and analyse the survival of pneumoconiosis in Chengdu from 2011 to 2021, providing scientific evidence for further prevention and control.
MethodsIn April 2022, the pneumoconiosis report card of Chengdu from 2012 to 2021 and survival data were collected from the China Disease Control and prevention information system and the occupational pneumoconiosis follow-up survey project.The data of the report card was reorganized and analyzed by R4.4.0 software. Chi-square test was used to compare the case composition ratio between groups. The annual trend of the number of new pneumo coniosis cases was analyzed by linear regression model Kaplan-Meier method was used for survival analysis and log-rank test was used for comparison of survival curves between groups.
Results816 cases of pneumoconiosis were reported in Chengdu from 2011 to 2021, including 522 cases of stage Ⅰ (63.97%, 522/816), 148 cases of stage Ⅱ (18.14%, 148/816) and 146 cases of stage Ⅲ pneumoconiosis (17.89146/816) ; There were 596 cases of silicosis (73.04%, 596/816), 143 cases of coal worker's pneumoconiosis (17.52%, 143/816). New onset pneumoconiosis was mainly male (810 cases, 99.26%). The median age of diagnosis and the 25th and 75th percentile were 63 (51-71) years old, the median length of dust exposure were 12.00 (5.92-28.00) years, and the types of work were mainly rock drillers (24.63%, 201/816), tunneling workers (19.36%, 158/816) and coal miners (13.60%, 111/816). Among 816 cases of new pneumoconiosis, 35 cases were lost to follow-up (4.29%, 35/816), 605 cases survived and 176 cases died. The 5-year survival rate was 78.6% and the 10-year survival rate was 65.8%.
ConclusionThe number of pneumoconiosis reported in Chengdu was relatively stable in recent years. The main type of pneumoconiosis was silicosis, which was concentrated in regions, industries and types of work. We should continue to strengthen the prevention and treatment of pneumoconiosis.
Key words:
Pneumoconiosis; Silicosis; Coal worker's pneumoconiosis; Distribution characteristics; Survival analysis
Contributor Information
Kuang Dan
Department of Occupational Disease Prevention and Contral Chengdu Center for Disease Control and Prevention, Chengdu 610041, China
Peng Qi
Department of Occupational Disease Prevention and Contral Chengdu Center for Disease Control and Prevention, Chengdu 610041, China
Gao Yuan
Department of Occupational Disease Prevention and Contral Chengdu Center for Disease Control and Prevention, Chengdu 610041, China
Wang Lin
Department of Occupational Disease Prevention and Contral Chengdu Center for Disease Control and Prevention, Chengdu 610041, China
Yang Xiaosong
Department of Occupational Disease Prevention and Contral Chengdu Center for Disease Control and Prevention, Chengdu 610041, China
