Economic evaluation of a randomized controlled trial of an intervention to reduce office workers’ sitting time: the "Stand Up Victoria" trial

OBJECTIVES: This study aimed to assess the economic credentials of a workplace-delivered intervention to reduce sitting time among desk-based workers. METHODS: We performed within-trial cost-efficacy analysis and long-term cost-effectiveness analysis (CEA) and recruited 231 desk-based workers, aged...

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Main Authors: Lan Gao, Anna Flego, David W Dunstan, Elisabeth AH Winkler, Genevieve N Healy, Elizabeth G Eakin, Lisa Willenberg, Neville Owen, Anthony D LaMontagne, Anita Lal, Glen H Wiesner, Nyssa T Hadgraft, Marj L Moodie
Format: Article
Language:English
Published: Nordic Association of Occupational Safety and Health (NOROSH) 2018-09-01
Series:Scandinavian Journal of Work, Environment & Health
Subjects:
Online Access: https://www.sjweh.fi/show_abstract.php?abstract_id=3740
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author Lan Gao
Anna Flego
David W Dunstan
Elisabeth AH Winkler
Genevieve N Healy
Elizabeth G Eakin
Lisa Willenberg
Neville Owen
Anthony D LaMontagne
Anita Lal
Glen H Wiesner
Nyssa T Hadgraft
Marj L Moodie
author_facet Lan Gao
Anna Flego
David W Dunstan
Elisabeth AH Winkler
Genevieve N Healy
Elizabeth G Eakin
Lisa Willenberg
Neville Owen
Anthony D LaMontagne
Anita Lal
Glen H Wiesner
Nyssa T Hadgraft
Marj L Moodie
author_sort Lan Gao
collection DOAJ
description OBJECTIVES: This study aimed to assess the economic credentials of a workplace-delivered intervention to reduce sitting time among desk-based workers. METHODS: We performed within-trial cost-efficacy analysis and long-term cost-effectiveness analysis (CEA) and recruited 231 desk-based workers, aged 24–65 years, across 14 worksites of one organization. Multicomponent workplace-delivered intervention was compared to usual practice. Main outcome measures including total device-measured workplace sitting time, body mass index (BMI), self-reported health-related quality of life (Assessment of Quality of Life-8D, AQoL-8D), and absenteeism measured at 12 months. RESULTS: Compared to usual practice, the intervention was associated with greater cost (AU$431/person), benefits in terms of reduced workplace sitting time [-46.8 minutes/8-hour workday, 95% confidence interval (CI): -69.9– -23.7] and increased workplace standing time (42.2 minutes/8-hour workday, 95% CI 23.8–60.6). However, there were no significant benefits for BMI [0.148 kg/m^2 (95% CI-1.407–1.703)], QoL-8D [-0.006 (95% CI -0.074–0.063)] and absenteeism [2.12 days (95% CI -2.01–6.26)]. The incremental cost-efficacy ratios (ICER) ranged from AU$9.94 cost/minute reduction in workplace sitting time to AU$13.37/minute reduction in overall sitting time. CEA showed the intervention contributed to higher life year (LY) gains [0.01 (95% CI 0.009–0.011)], higher health-adjusted life year (HALY) gains [0.012 (95% CI 0.0105 – 0.0135)], and higher net costs [AU$344 (95% CI $331–358)], with corresponding ICER of AU$34 443/LY and AU$28 703/HALY if the intervention effects were to be sustained for five-years. CEA results were sensitive to assumptions surrounding intervention-effect decay rate and discount rate. CONCLUSIONS: The intervention was cost-effective over the lifetime of the cohort when scaled up to the national workforce and provides important
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spelling doaj.art-de5ff0ddb5154e89a04e25d34d83b7ff2022-12-21T22:46:07ZengNordic Association of Occupational Safety and Health (NOROSH)Scandinavian Journal of Work, Environment & Health0355-31401795-990X2018-09-0144550351110.5271/sjweh.37403740Economic evaluation of a randomized controlled trial of an intervention to reduce office workers’ sitting time: the "Stand Up Victoria" trialLan Gao0Anna FlegoDavid W DunstanElisabeth AH WinklerGenevieve N HealyElizabeth G EakinLisa WillenbergNeville OwenAnthony D LaMontagneAnita LalGlen H WiesnerNyssa T HadgraftMarj L MoodieDeakin Health Economics, Centre for Population Health Research, Faculty of Health, Deakin University, 221 Burwood Hwy, Burwood, Melbourne, Australia.OBJECTIVES: This study aimed to assess the economic credentials of a workplace-delivered intervention to reduce sitting time among desk-based workers. METHODS: We performed within-trial cost-efficacy analysis and long-term cost-effectiveness analysis (CEA) and recruited 231 desk-based workers, aged 24–65 years, across 14 worksites of one organization. Multicomponent workplace-delivered intervention was compared to usual practice. Main outcome measures including total device-measured workplace sitting time, body mass index (BMI), self-reported health-related quality of life (Assessment of Quality of Life-8D, AQoL-8D), and absenteeism measured at 12 months. RESULTS: Compared to usual practice, the intervention was associated with greater cost (AU$431/person), benefits in terms of reduced workplace sitting time [-46.8 minutes/8-hour workday, 95% confidence interval (CI): -69.9– -23.7] and increased workplace standing time (42.2 minutes/8-hour workday, 95% CI 23.8–60.6). However, there were no significant benefits for BMI [0.148 kg/m^2 (95% CI-1.407–1.703)], QoL-8D [-0.006 (95% CI -0.074–0.063)] and absenteeism [2.12 days (95% CI -2.01–6.26)]. The incremental cost-efficacy ratios (ICER) ranged from AU$9.94 cost/minute reduction in workplace sitting time to AU$13.37/minute reduction in overall sitting time. CEA showed the intervention contributed to higher life year (LY) gains [0.01 (95% CI 0.009–0.011)], higher health-adjusted life year (HALY) gains [0.012 (95% CI 0.0105 – 0.0135)], and higher net costs [AU$344 (95% CI $331–358)], with corresponding ICER of AU$34 443/LY and AU$28 703/HALY if the intervention effects were to be sustained for five-years. CEA results were sensitive to assumptions surrounding intervention-effect decay rate and discount rate. CONCLUSIONS: The intervention was cost-effective over the lifetime of the cohort when scaled up to the national workforce and provides important https://www.sjweh.fi/show_abstract.php?abstract_id=3740 sittinginterventionevaluationrandomized controlled trialproductivityworkplace interventionoffice workereconomic evaluationrctsitting timecost-effectiveness analysisstand-up victoriasit-stand workstationcost-efficacy
spellingShingle Lan Gao
Anna Flego
David W Dunstan
Elisabeth AH Winkler
Genevieve N Healy
Elizabeth G Eakin
Lisa Willenberg
Neville Owen
Anthony D LaMontagne
Anita Lal
Glen H Wiesner
Nyssa T Hadgraft
Marj L Moodie
Economic evaluation of a randomized controlled trial of an intervention to reduce office workers’ sitting time: the "Stand Up Victoria" trial
Scandinavian Journal of Work, Environment & Health
sitting
intervention
evaluation
randomized controlled trial
productivity
workplace intervention
office worker
economic evaluation
rct
sitting time
cost-effectiveness analysis
stand-up victoria
sit-stand workstation
cost-efficacy
title Economic evaluation of a randomized controlled trial of an intervention to reduce office workers’ sitting time: the "Stand Up Victoria" trial
title_full Economic evaluation of a randomized controlled trial of an intervention to reduce office workers’ sitting time: the "Stand Up Victoria" trial
title_fullStr Economic evaluation of a randomized controlled trial of an intervention to reduce office workers’ sitting time: the "Stand Up Victoria" trial
title_full_unstemmed Economic evaluation of a randomized controlled trial of an intervention to reduce office workers’ sitting time: the "Stand Up Victoria" trial
title_short Economic evaluation of a randomized controlled trial of an intervention to reduce office workers’ sitting time: the "Stand Up Victoria" trial
title_sort economic evaluation of a randomized controlled trial of an intervention to reduce office workers sitting time the stand up victoria trial
topic sitting
intervention
evaluation
randomized controlled trial
productivity
workplace intervention
office worker
economic evaluation
rct
sitting time
cost-effectiveness analysis
stand-up victoria
sit-stand workstation
cost-efficacy
url https://www.sjweh.fi/show_abstract.php?abstract_id=3740
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