Psychometric properties of the Finnish version of the Young Person’s Clinical Outcomes in Routine Evaluation (YP-CORE) questionnaire
Sammanfattning
Background: An increasing need exists for suitable measures to evaluate treatment outcome in adolescents.
YP-CORE is a pan-theoretical brief questionnaire developed for this purpose, but it lacks studies
in different cultures or languages.
Aims: To explore the acceptability, factor structure, reliability, validity, and sensitivity to change of the
Finnish translation of YP-CORE.
Methods: The study was conducted at the Department of Adolescent Psychiatry, Helsinki University
Central Hospital. A Finnish translation was prepared by a team of professionals and adolescents. A clinical
sample of 104 patients was asked to complete the form together with BDI-21 and BAI, and 92 of
them filled the forms again after a 3-month treatment. Analysis included acceptability, confirmatory
factor analysis, internal and test–re-test reliability, concurrent validity, influence of gender and age, and
criteria for reliable change.
Results: YP-CORE was well accepted, and the rate of missing values was low. Internal consistency
(a ¼ 0.83–.92) and test–re-test reliability were good (r ¼ 0.69), and the results of CFA supported a onefactor
model. YP-CORE showed good concurrent validity against two widely used symptom-specific
measures (r ¼ 0.62–0.87). Gender had a moderately strong effect on the scores (d ¼ 0.67), but the effect
of age was not as evident. The measure was sensitive to change, showing a larger effect size (d ¼ 0.55)
than in the BDI-21 and BAI (d ¼ 0.31–0.50).
Conclusions: The results show that the translation of YP-CORE into Finnish has been successful, the
YP-CORE has good psychometric properties, and the measure could be taken into wider use in clinical
settings for outcome measurement in adolescents