Details

Autor(en) / Beteiligte

• Sarró, Salvador
• Dueñas, Rosa M
• Ramı́rez, Nicolás
• Arranz, Belén
• Martı́nez, Ramón
• Sánchez, José M
• González, José M
• Saló, Laura
• Miralles, Luisa
• San, Luis

Titel

Cross-cultural adaptation and validation of the Spanish version of the Calgary Depression Scale for Schizophrenia

Ist Teil von

• Schizophrenia research, 2004-06, Vol.68 (2), p.349-356

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2004

Quelle

Access via ScienceDirect (Elsevier)

Beschreibungen/Notizen

• Background: The Calgary Depression Scale for Schizophrenia (CDSS) is a valid tool to assess depression in schizophrenics and has been translated, adapted, and validated to be used in different non-English languages. Therefore, it may be predicted that a Spanish version of this scale will be also a valid instrument to assess symptoms of depression in patients with schizophrenia. Objective: We determined the validity of the Spanish version of the Calgary scale (CDSS-S). Methods: Outpatients and inpatients ( n=93) diagnosed as having schizophrenia by DSM-IV criteria confirmed by SCID-IV interview were included. The Positive and Negative Syndrome Scale (PANSS), Hamilton Depression Rating Scale (HDRS-17 and HDRS-21 items), Montgomery-Åsberg Depression Rating Scale (MADRS), Extrapyramidal Symptoms Rating Scale (ESRS), and Barnes Acathisia Rating Scale were administered by a first rater, whereas the CDSS-S was assessed by a second independent rater. Results: The internal consistency (Cronbach's alpha 0.83) and the interrater reliability (>0.73 intraclass correlation coefficient [ICC] for single items and 0.92 for total score) were good. The test–retest reliability was high (ICC of 0.89). The scale showed a good construct validity with statistically significant correlations with HDRS-17, HDRS-21, MADRS, and G6 item (depression) of PANSS. The CDSS showed no correlation with the positive subscale of PANSS and a weak correlation with the negative subscale, general psychopathology subscale, and total score of PANSS. A cut point of five showed 94.7% sensitivity, 86.5% specificity, and 70% and 98% positive and negative predictive values, respectively. Conclusions: The Spanish version of CDSS is a valid instrument to assess depressive episodes for stabilized and acute patients with schizophrenia.