Data Analysis
The impact of the intervention across all three behaviours was assessed
using 2 (intervention, control) × 2 (pre, post-intervention) MANOVAs.
The integrated model constructs were considered as predictor variables
for low-fat food/meal consumption, carbohydrate counting, and physical
activity. In another MANOVA analysis, BMI, weight, TG, and LDL-c were
considered as predictors to show the effects of the intervention on
clinical and biochemical outcomes. Mediation analyses were also
conducted to assess whether any of the (significant) extended TPB
variables mediated the impact of the intervention on behaviour. α was
set at 0.05 as the significance level. Baseline differences for age,
gender, education level, job, marital status, years since diagnosis,
weight, height, BMI, TG, and LDL-c were examined by Chi-square and
independent t-tests.