Safety and Health at Work Vol. 11 Issue 2 2020
Work Hours and Cognitive Function: The Multi-Ethnic Study of Atherosclerosis (Original Article)
Dublin Core
Title
Safety and Health at Work Vol. 11 Issue 2 2020
Work Hours and Cognitive Function: The Multi-Ethnic Study of Atherosclerosis (Original Article)
Work Hours and Cognitive Function: The Multi-Ethnic Study of Atherosclerosis (Original Article)
Subject
Cognitive abilities screening instrument, Digit, Symbol Coding, Global cognitive function, Occupation, Work schedule
Description
Background: Cognitive impairment is a public health burden. Our objective was to investigate associa-
tions between work hours and cognitive function.
Methods: Multi-Ethnic Study of Atherosclerosis (MESA) participants (n 1⁄4 2,497; 50.7% men; age range 44 -84 years) reported hours per week worked in all jobs in Exams 1 (2000-2002), 2 (2002-2004), 3 (2004 -2005), and 5 (2010-2011). Cognitive function was assessed (Exam 5) using the Cognitive Abilities
Screening Instrument (version 2), a measure of global cognitive functioning; the Digit Symbol Coding, a
measure of processing speed; and the Digit Span test, a measure of attention and working memory. We
used a prospective approach and linear regression to assess associations for every 10 hours of work.
Results: Among all participants, associations of hours worked with cognitive function of any type were
not statistically significant. In occupation-stratified analyses (interaction p 1⁄4 0.051), longer work hours
were associated with poorer global cognitive function among Sales/Office and blue-collar workers, after
adjustment for age, sex, physical activity, body mass index, race/ethnicity, educational level, annual in-
come, history of heart attack, diabetes, apolipoprotein E-epsilon 4 allele (ApoE4) status, birth-place,
number of years in the United States, language spoken at MESA Exam 1, and work hours at Exam 5
(b 1⁄4 e0.55, 95% CI 1⁄4 e0.99, e0.09) and (b 1⁄4 e0.80, e1.51, e0.09), respectively. In occupation-stratified
analyses (interaction p 1⁄4 0.040), we also observed an inverse association with processing speed among
blue-collar workers (adjusted b 1⁄4 e0.80, e1.52, e0.07). Sex, race/ethnicity, and ApoE4 did not signifi-
cantly modify associations between work hours and cognitive function.
Conclusion: Weak inverse associations were observed between work hours and cognitive function
among Sales/Office and blue-collar workers.
tions between work hours and cognitive function.
Methods: Multi-Ethnic Study of Atherosclerosis (MESA) participants (n 1⁄4 2,497; 50.7% men; age range 44 -84 years) reported hours per week worked in all jobs in Exams 1 (2000-2002), 2 (2002-2004), 3 (2004 -2005), and 5 (2010-2011). Cognitive function was assessed (Exam 5) using the Cognitive Abilities
Screening Instrument (version 2), a measure of global cognitive functioning; the Digit Symbol Coding, a
measure of processing speed; and the Digit Span test, a measure of attention and working memory. We
used a prospective approach and linear regression to assess associations for every 10 hours of work.
Results: Among all participants, associations of hours worked with cognitive function of any type were
not statistically significant. In occupation-stratified analyses (interaction p 1⁄4 0.051), longer work hours
were associated with poorer global cognitive function among Sales/Office and blue-collar workers, after
adjustment for age, sex, physical activity, body mass index, race/ethnicity, educational level, annual in-
come, history of heart attack, diabetes, apolipoprotein E-epsilon 4 allele (ApoE4) status, birth-place,
number of years in the United States, language spoken at MESA Exam 1, and work hours at Exam 5
(b 1⁄4 e0.55, 95% CI 1⁄4 e0.99, e0.09) and (b 1⁄4 e0.80, e1.51, e0.09), respectively. In occupation-stratified
analyses (interaction p 1⁄4 0.040), we also observed an inverse association with processing speed among
blue-collar workers (adjusted b 1⁄4 e0.80, e1.52, e0.07). Sex, race/ethnicity, and ApoE4 did not signifi-
cantly modify associations between work hours and cognitive function.
Conclusion: Weak inverse associations were observed between work hours and cognitive function
among Sales/Office and blue-collar workers.
Creator
Luenda E. Charles, Desta Fekedulegn, Cecil M. Burchfiel, Kaori Fujishiro, Adina Zeki Al Hazzouri, Annette L. Fitzpatrick, Stephen R. Rapp
Publisher
Elsevier Korea LLC
Date
June 2020
Contributor
Sri Wahyuni
Format
PDF
Language
English
Type
Text
Coverage
Safety and Health at Work Vol. 11 Issue 2 2020
Files
Citation
Luenda E. Charles, Desta Fekedulegn, Cecil M. Burchfiel, Kaori Fujishiro, Adina Zeki Al Hazzouri, Annette L. Fitzpatrick, Stephen R. Rapp, “Safety and Health at Work Vol. 11 Issue 2 2020
Work Hours and Cognitive Function: The Multi-Ethnic Study of Atherosclerosis (Original Article),” Repository Horizon University Indonesia, accessed February 5, 2025, https://repository.horizon.ac.id/items/show/2004.
Work Hours and Cognitive Function: The Multi-Ethnic Study of Atherosclerosis (Original Article),” Repository Horizon University Indonesia, accessed February 5, 2025, https://repository.horizon.ac.id/items/show/2004.