Letter to Editor. New assessment of the validity of the Brief Measure to Assess Perception of Self-Influence on the Disease Course: A Version for Schizophrenia.
BACKGROUND
Clinical observations suggest that the Brief Measure to Assess Perception of Self-Influence on the Disease Course: A Version for Schizophrenia has the better reliability, than presented in the original publication of the scale [1]. It is used in research and their results indicate moderate relations between the perception of the self-influence on schizophrenia course and social functioning as well as adherence to the recommended treatment. These circumstances justify and new assessment of the reliability of the scale.


METHODS
Detailed scale for competent judges, who had better opportunity for the comprehensive examination of 59 participants, 27 men and 29 women of age 22-72 lat (M = 40.69; SD = 11.85).


RESULTS
The Spearman's correlation between the scores on the version for schizophrenia of the Brief Measure to Assess Perception of Self-Influence on the Disease Course and the assessment of the patients' perception of self-influence on the schizophrenia course by the competent judges rho was 0.56. Whereas, in the first study Pearson's r was 0.45.


CONCLUSIONS
Brief Measure to Assess Perception of Self-Influence on the Disease Course - Version for Schizophrenia has good enough validity, as for so brief scale. It can be used in research and clinical practice.
II Department of Psychiatry, Medical University of Warsaw.
Andrzej
A
Kokoszka
Psychiatric Day Ward, Masovian Brodno Hospital in Warsaw.
Agnieszka
A
Łukasiewicz
D000328:Adult; D000368:Aged; D018450:Disease Progression; D005260:Female; D006801:Humans; D008297:Male; D055118:Medication Adherence / Q000523:psychology; D008875:Middle Aged; D011581:Psychological Tests; D012559:Schizophrenia / Q000175:diagnosis / Q000628:therapy; D012565:Schizophrenic Psychology; D012649:Self Concept; D057566:Self Report; D011795:Surveys and Questionnaires; D055815:Young Adult
perception of self-influence on the disease course; schizophrenia; self-rating scale