Quantitative data analysis
Descriptive statistics were used to summarise the distribution of baseline variables across each of the randomisation groups. The continuous baseline variables (e.g. age) were reported with means and 95% confidence intervals (95% CI), if shown to be normally distributed, otherwise were reported with medians and Interquartile Ranges (IQR). The categorical variables (e.g. sex) were reported with frequencies & percentages. Similarly, we analysed data descriptively to explore the outcome measure scores in the intervention and control groups at baseline and follow-up, to explore changes in LET health status over time. The study was not powered for analysis of results between groups. We also assessed external responsiveness to change of PROMs using Spearman's rank correlation, with GPE-11 scores as the anchor. SPSS Statistics software (version 27) was used for the analysis.