Statistical analysis
depression, self-harm
REGRESSION, SECONDARY
Statistical analysis was based on intention-to-treat subject to the availability of data. The statistical analysis of the primary outcome measure, repetition of the self-harm episode, was performed using a logistic random effects model, with the therapist included as a random effect. The E-TAU group did not receive trial intervention, and thus for the purposes of the model, each E-TAU participant was considered to be in their own cluster. Also included in the model were adjustments for age, gender, type of self-harm and level of depression at baseline (see Table Continuous secondary outcome measures were analysed using a linear mixed model, with a single model fitted with data across all time-points. Both therapist and the patient were included as random effects. Covariates included were for the primary outcome, plus the baseline values of the outcome.Secondary outcomes measured on an ordinal scale (individual CSQ-8 items) were analysed using an ordinal logistic regression random effects model, with the therapist as the random effect (Table 