[Self-rating scales in schizophrenia: assessment of the reliability of the Paranoid-Depressive Scale (PD-S) Frankfurt Self-feeling Scale (FBS). and two visual analogy scales].
OBJECTIVE
To assess the reliability of the Paranoid-Depressive Scale (PD-S, Paranoid-Depresivitäts-Skala), the Frankfurt Self-feeling Scale (FBS, Frankfurter Befindlichkeitsskala), and of two visual analogy scales of a sense of illness (WAC) and of self-feeling (WAS).


METHODS
210 patients with schizophrenia of various clinical courses.


METHODS
All patients in the study group were required to complete each scale twice (test-retest) at 48hr intervals, in order to assess each method's reproducibility. In addition, the two complex questionnaire scales were analysed for internal coherence.


RESULTS
Spearman's rho correlation coefficient for reproducibility was found to be very high for all the scales. Also, the Cronbach's alpha coefficient for internal coherence was found to be acceptably high for both complex questionnaire scales, with reference to the scales as a whole, as well as to their dimensions (paranoid and depression dimensions of the PD-S).


CONCLUSIONS
Patients suffering from schizophrenia can reliably use the above-mentioned scales.
Schaeffer
Ewa
E
I Kliniki Psychiatrycznej IPiN w Warszawie.
Wciórka
Jacek
J
D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D012559:Schizophrenia / Q000175:diagnosis*; D012565:Schizophrenic Psychology; D012649:Self Concept; D012647:Self-Assessment; D012680:Sensitivity and Specificity