Methods
Design
This study was based on data from an RCT in which adult participants
with severe health anxiety were randomized to 12 weeks
of ICBT (n ¼ 79) or IBSM (n ¼ 79). The study was considered a
replication of a previously published study investigating predictors
in ICBT for severe health anxiety (Hedman et al., 2013). Dependent
variables were assessed at post-treatment, i.e. directly after treatment,
and predictor variables at baseline or within two weeks of
treatment start. If not otherwise specified, predictor variables were
assessed before treatment start. A detailed description of the RCT
on which this study was based can be found elsewhere (Hedman
et al., 2014).