Statistical analysis
REGRESSIONS
The research questions of this study were tested in a per-protocol (PP) analysis, which included all participants that remained within the main study until completion of the follow-up [In the data preparation process the handling of low quality data, for example due to illogical LSI scores, was operationally defined by the first author, approved by the authors of this study and excluded from the analysis. If all authors were unsure about the exclusion of potentially unreasonable survey responses the data was retained. Missing data, for example owing to a partially incomplete survey response, were imputed by applying multivariate-chained equations, when the assumption of data missing at random was met [Four linear, mixed-model (LMM) regressions, one for the total PAHCO score and three for the PAHCO subscales, were run with the participants’ pseudonym as the random intercept, to test the first research goal of changeability and temporal stability of PAHCO [Standardised estimates (β), confidence intervals (