Document details for 'Compositional data analysis in time-use epidemiology: what, why, how'

Authors Dumuid, D., Pedišić, Ž., Palarea Albaladejo, J., Martin-Fernandez, J.A., Hron, K. and Olds, T.
Publication details International Journal of Environmental Research and Public Health 17, 2220. MDPI (Multidisciplinary Digital Publishing Institute).
Publisher details MDPI (Multidisciplinary Digital Publishing Institute)
Keywords compositional data; physical activity; sedentary behavior; sleep
Abstract In recent years the focus of activity behavior research has shifted away from univariate paradigms (e.g., physical activity, sedentary behavior and sleep) to a 24-hour time-use paradigm that integrates all daily activity behaviors. The behaviors are analyzed relative to each other, rather than as individual entities. Compositional data analysis (CoDA) is increasingly used for the analysis of time-use data, because it is intended for data that convey relative information. While CoDA has brought new understanding of how time use is associated with health, it has also raised challenges in how this methodology is applied and how the findings are interpreted. In this paper we provide a brief overview of CoDA for time-use data, summarize current CoDA research in time-use epidemiology, and discuss challenges and future directions. We use 24-hour time-use diary data from Wave 6 of the Longitudinal Study of Australian Children (Birth Cohort, n=3228, aged 10.9±0.3 years) to demonstrate how to do descriptive analysis of time-use compositions, and how to explore the relationship between daily time use (sleep, sedentary behavior and physical activity) and a health outcome (in this example, adiposity). We illustrate how to comprehensively interpret the CoDA findings in a meaningful way.
Last updated 2020-03-26

Unless explicitly stated otherwise, all material is copyright © Biomathematics and Statistics Scotland.

Biomathematics and Statistics Scotland (BioSS) is formally part of The James Hutton Institute (JHI), a registered Scottish charity No. SC041796 and a company limited by guarantee No. SC374831. Registered Office: JHI, Invergowrie, Dundee, DD2 5DA, Scotland