Julie Elbæk Pedersen1, Kajsa Ugelvig Petersen1, Niels Erik Ebbehøj2, Jens Peter Bonde2, Johnni Hansen1.
Abstract
OBJECTIVE: Firefighters are exposed to numerous respiratory hazards, but large studies on the risk of pulmonary disease are scarce. The objective of this study was to examine incidence of asthma and chronic obstructive pulmonary disease (COPD) in a nationwide cohort of Danish firefighters.
METHODS: We used individual historical employment records on 11 968 Danish male firefighters primarily supplied by trade unions and fire agencies. Furthermore, we used the Supplementary Pension Fund Register to form an occupational reference group consisting of military employees. Information on respiratory incidence was retrieved from the nationwide Danish National Patient Registry. Age and calendar time standardised incidence ratio (SIR) and Poisson regression analyses (incidence rate ratio) were used for estimation of risks, including 95% CIs.
RESULTS: Compared with military employees, the overall age and calendar-time adjusted risk for asthma was significantly increased among full-time firefighters (SIR=1.58, 95% CI 1.32 to 1.88), but not among part-time/volunteer firefighters. Full-time firefighters' risk for asthma did not vary by duration of employment. No consistent evidence of an increased risk for chronic obstructive pulmonary disease was detected.
CONCLUSION: Danish firefighters have an increased risk of asthma, but the causes, whether occupational or not, remain to be established. © Author(s) (or their employer(s)) 2018. No commercial re-use. See rights and permissions. Published by BMJ.
OBJECTIVE: Firefighters are exposed to numerous respiratory hazards, but large studies on the risk of pulmonary disease are scarce. The objective of this study was to examine incidence of asthma and chronic obstructive pulmonary disease (COPD) in a nationwide cohort of Danish firefighters.
METHODS: We used individual historical employment records on 11 968 Danish male firefighters primarily supplied by trade unions and fire agencies. Furthermore, we used the Supplementary Pension Fund Register to form an occupational reference group consisting of military employees. Information on respiratory incidence was retrieved from the nationwide Danish National Patient Registry. Age and calendar time standardised incidence ratio (SIR) and Poisson regression analyses (incidence rate ratio) were used for estimation of risks, including 95% CIs.
RESULTS: Compared with military employees, the overall age and calendar-time adjusted risk for asthma was significantly increased among full-time firefighters (SIR=1.58, 95% CI 1.32 to 1.88), but not among part-time/volunteer firefighters. Full-time firefighters' risk for asthma did not vary by duration of employment. No consistent evidence of an increased risk for chronic obstructive pulmonary disease was detected.
CONCLUSION: Danish firefighters have an increased risk of asthma, but the causes, whether occupational or not, remain to be established. © Author(s) (or their employer(s)) 2018. No commercial re-use. See rights and permissions. Published by BMJ.
Entities:
Keywords:
COPD; asthma; firefighting; historical cohort study; occupational epidemiology
Mesh：
Year: 2018
PMID： 30323012 DOI： 10.1136/oemed-2018-105234
Source DB: PubMed Journal: Occup Environ Med ISSN： 1351-0711 Impact factor: 4.402