Primary study parameter(s)
Since the design is a repeated-measures RCT, repeated-measures techniques will be used to analyze the difference between the lifestyle intervention and CAU group for the quality of life. The repeated measures techniques will be based on the intention-to-treat principle, in which participants with at least one valid post-baseline follow-up are included. Analyses will be adjusted for the stratification factors (age group, sex). The study results will be reported in accordance with the Consolidated Standards of Reporting Trials (CONSORT) guidelines [