Changes in Health Behaviours in Adults At-Risk of Chronic Disease: Primary Outcomes From The My Health for Life Program
Abstract Background Chronic disease is the leading cause of premature death globally, and many of these deaths are preventable by modifying some key behavioural and metabolic risk factors. This secondary data analysis examines changes in health behaviours among men and women at risk of diabetes or cardiovascular disease (CVD) who participated in a 6-month lifestyle intervention called the My health for life program. Methods My health for life is a government-funded multi-component program designed to reduce chronic disease risk factors amongst at-risk adults. The intervention comprises six sessions over a 6-month period, delivered by a trained facilitator or telephone health coach. The analysis presented in this paper stems from 9,372 participants who participated in the program between July 2017 and December 2019. Primary outcomes included fruit and vegetable intake, consumption of sugar-sweetened drinks and take-away, alcohol and tobacco smoking, physical activity, body mass index (BMI), and waist circumference (WC). Variables were summed to form a single Healthy Lifestyle Index (HLI) ranging from 0 to 18, with higher scores denoting healthier behaviours. Longitudinal associations between lifestyle indices, assessed using Gaussian Generalized Estimating Equations (GEE) models with an identity link and robust standard errors. Results Improvements in HLI scores were noted between baseline (Md = 10.0; IQR = 8.3, 11.7] and 26-weeks (Md = 11.7; IQR = 10.0, 13.2] which corresponded with increases in fruit and vegetable consumption and decreases in takeaway frequency, and weight indices (p < .01 for all) but not risky alcohol intake. Modelling showed higher average HLI among those aged 45 or older (β = 0.97, 95% CI = 0.81, 1.13, p < .01) with vocational educational qualifications (certificate/diploma: β = 0.47, 95% CI = 0.19, 0.76, p < .01; bachelor/post-graduate degree β = 1.05, 95% CI = 0.76, 1.34, p < .01) while being male, Aboriginal or Torres Strait Islander background, or not currently working conferred lower average HLI scores (p < .01 for all). Conclusions While participants showed improvements in many healthy lifestyle indices including BMI, waist circumference, physical activity, and dietary indicators, changes in alcohol consumption were less amenable to the program. There is a need for additional research to understand the multi-level barriers and facilitators of behaviour change in this context to tailor the intervention for more-difficult-to-treat groups.