Clustering of health behaviours in Canadians: A multiple behaviour analysis of data from the Canadian Longitudinal Study on Aging
Health risk behaviours such as physical inactivity, unhealthy eating, smoking tobacco, and alcohol use are each leading risk factors for non-communicable chronic disease and each play a central role in limiting health and life satisfaction. However, much less is known about how co-occurring behaviours are associated with health outcomes. Understanding which behaviours tend to co-occur (i.e., cluster together), and how such clusters are associated with physical and mental health, life satisfaction, and health care utilization may provide novel opportunities to leverage this co-occurrence to develop and evaluate interventions to promote multiple health behaviour change. Using cross-sectional baseline data (N=40,268) from the Canadian Longitudinal Study of Aging, we performed a pre-defined set of analyses to examine the co-occurrence of health behaviours. We used agglomerative hierarchical cluster analysis to cluster individuals based on their behavioural tendencies and multinomial logistic regression to examine how these clusters are associated with demographic characteristics, healthcare utilization, and general health and life satisfaction, and assess whether sex and age moderate these relationships. Seven clusters were identified with clusters differentiated by six of the seven health behaviours included in the analysis. Variability between clusters was observed in frequencies of weekly walking, strenuous exercise, and alcohol consumption. Sociodemographic characteristics varied across several clusters while self-reported physical/mental health showed less variation across clusters. The seven identified clusters of health behaviours allow for contrasts to be made with comparable analyses in other countries and will help inform the development of future health behaviour change interventions tailored to sub-populations and their sociodemographic profiles.