To develop the Greek version of the Impact of E vent Scale-Revised
(IES-R-Gr), assess its Psychometric properties, and finally to examine
the impact of cancer diagnosis to a palliative care patient sample, the
IES-R was translated into Greek using the “forward-backward”
procedure. It was administered twice, at one-week intervals, to 82
eligible patients with advanced cancer. Together with the IES-R-Gr
scale, the patients also completed the Hospital Anxiety and Depression
(HAD) Scale. Reliability was assessed in terms of internal consistency
(Cronbach’s alpha coefficients) and test/retest (Spearman’s r value and
Kendall’s tau-b). Construct validity was demonstrated through
association with the HAD Scale, and convergence and discriminative
validity and interscale correlations were also assessed. The Greek
version of the IES-R had Cronbach’s alphas for the intrusion, avoidance,
and hyperarousal scales of 0.72, 0.77, and 0.85, respectively. Overall
test-retest reliability was satisfactory at P < 0.0005. Satisfactory
construct validity was supported by the correlation analysis between the
IES-R-Gr subscales and anxiety and depression. Factor analysis yielded
three factors, explaining 57.26% of the variance. Interscale and
interitem correlations were found satisfactory at P < 0.0005. These
results demonstrate that the IES-R-Gr is an instrument with satisfactory
psychometric properties and is a valid research tool for the impact of
cancer diagnosis in advanced cancer patients
