Objective: In this study, it is aimed to evaluate the reliability and validity
of the Turkish version of Bipolar Prodrome Symptom Scale.
Method: The study was carried out with subjects who participated the
study on the epidemiology of bipolar disorder among the students in
the 1st grade of Celal Bayar University. The sample consisted of 30
volunteers diagnosed as bipolar disorder and 122 healthy controls. For
concurrent validity, Hypomania Checklist-32-Revised was used. In the
statistical analysis, internal consistency coefficient, item-total score correlation
coefficients, exploratory factor analysis, correlation with concurrent
scale and ROC curve were calculated.
Results: Translation into Turkish and back-translation into English of
were performed and thus the semantic harmony of the scale was obtained.
In the internal consistency, Cronbach alpha coefficient was
between 0,969-0,979 and item-total score correlations were between
0,767-0,929 and 0,725-0,890. In factor analysis, for the severity subscale
a one-factor solution representing 78,9% of the variance and for
the frequency subscale one-factor solution representing 71,7% of the
solution are obtained. Correlation of Bipolar Prodrome Symptom Scale
with Hypomania Checklist-32-Revised was r=0,513 and 0,530. In the
ROC analysis, area under the curve was 0,977 and 0,999. The scale
discriminates well between the bipolar group and healthy control group.
Conclusion: Bipolar Prodrome Symptom Scale developed for screening
hypomania is reported to be reliable and valid in Turkish.