Professional cleaning and risk of asthma - a Danish nationwide register-based study
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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Professional cleaning and risk of asthma - a Danish nationwide register-based study. / Sejbaek, Camilla Sandal; Flachs, Esben Meulengracht; Caroe, Tanja Korfitsen; Meyer, Harald William; Frederiksen, Marie; Frydendall, Karen Bo; Wolkoff, Peder; Clausen, Per Axel; Hougaard, Karin Sørig; Schlunssen, Vivi.
I: Scandinavian journal of work, environment & health, Bind 48, Nr. 2, 2022, s. 127-136.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Professional cleaning and risk of asthma - a Danish nationwide register-based study
AU - Sejbaek, Camilla Sandal
AU - Flachs, Esben Meulengracht
AU - Caroe, Tanja Korfitsen
AU - Meyer, Harald William
AU - Frederiksen, Marie
AU - Frydendall, Karen Bo
AU - Wolkoff, Peder
AU - Clausen, Per Axel
AU - Hougaard, Karin Sørig
AU - Schlunssen, Vivi
PY - 2022
Y1 - 2022
N2 - Objective This study aimed to investigate the risk of asthma among professional cleaners in a nationwide population-based study.Methods Professional cleaners, aged 16-50 years, were identified according to the yearly assigned administrative job and industrial codes in a register-based, matched cohort study with other manual workers as references (1995-2016). Asthma was defined from national registers based on hospitalization and medication. Associations between recent and cumulative cleaning years and risk of asthma were estimated using Poisson regression, first in a full cohort and then in an inception cohort, among workers aged 16-20 years at the start of follow-up.Results The risk of asthma was not increased for recent cleaning compared to references [adjusted incidence rate ratio (IRRadj) 1.02 [95% confidence interval (CI) 0.99-1.04]. Similar results were seen for the inception cohort, where cumulative years of cleaning were associated with increased risk of asthma, more prominent for the group with the maximum of six years of cleaning IRRadj 2.53 (95% CI 1.38-4.64). Cumulative years of cleaning were associated with decreased risk of asthma, more pronounced for the maximum of ten compared to one year of cleaning [IRRadj 0.74 (95% CI 0.63-0.88)].Conclusions Asthma risk was increased in the inception cohort for cumulative years of cleaning but decreased in the full cohort. We could not confirm that recent work within cleaning was associated with increased risk of asthma. This may be due to healthy worker bias. Thus, we cannot rule out that long-term professional cleaning may be associated with increased risk of asthma.
AB - Objective This study aimed to investigate the risk of asthma among professional cleaners in a nationwide population-based study.Methods Professional cleaners, aged 16-50 years, were identified according to the yearly assigned administrative job and industrial codes in a register-based, matched cohort study with other manual workers as references (1995-2016). Asthma was defined from national registers based on hospitalization and medication. Associations between recent and cumulative cleaning years and risk of asthma were estimated using Poisson regression, first in a full cohort and then in an inception cohort, among workers aged 16-20 years at the start of follow-up.Results The risk of asthma was not increased for recent cleaning compared to references [adjusted incidence rate ratio (IRRadj) 1.02 [95% confidence interval (CI) 0.99-1.04]. Similar results were seen for the inception cohort, where cumulative years of cleaning were associated with increased risk of asthma, more prominent for the group with the maximum of six years of cleaning IRRadj 2.53 (95% CI 1.38-4.64). Cumulative years of cleaning were associated with decreased risk of asthma, more pronounced for the maximum of ten compared to one year of cleaning [IRRadj 0.74 (95% CI 0.63-0.88)].Conclusions Asthma risk was increased in the inception cohort for cumulative years of cleaning but decreased in the full cohort. We could not confirm that recent work within cleaning was associated with increased risk of asthma. This may be due to healthy worker bias. Thus, we cannot rule out that long-term professional cleaning may be associated with increased risk of asthma.
KW - cleaner
KW - cumulative exposure
KW - Denmark
KW - epidemiology
KW - new-onset asthma
KW - occupational asthma
KW - occupational exposure
KW - NONDOMESTIC CLEANERS
KW - SYMPTOMS
KW - PRODUCTS
KW - POSITION
KW - RHINITIS
KW - EXPOSURE
KW - WORKERS
U2 - 10.5271/sjweh.3997
DO - 10.5271/sjweh.3997
M3 - Journal article
C2 - 34761804
VL - 48
SP - 127
EP - 136
JO - Scandinavian journal of work, environment & health
JF - Scandinavian journal of work, environment & health
SN - 0355-3140
IS - 2
ER -
ID: 325711522