Validitas dan Reliabilitas Scale for The Assessment of Negative Symptoms (SANS) versi Bahasa Indonesia

Abstract

Objectives: To obtain a valid and reliable Indonesian version of the SANS instrument.. Methods: This study is a diagnostic study with a cross-sectional method that aims to find content validity, concurrent validity, internal consistency reliability, inter-rater reliability, cut-off value, sensitivity and specificity of the SANS instrument. Results: A total of 400 subjects participated in this study, the majority 67.5% of the subjects were male. The median age of the subjects was 37(18-45) years. In this study, it was found that the content validity test was good (mean I-CVI=1.00), the concurrent validity test comparing the SANS and PANSS instruments on the negative symptom subscale got significant results (p<0.001) with a strong correlation strength (r=0.763), internal consistency reliability test have very high score (cronbach alpha = 0.969), the overall item inter-rater reliability test was very good (ICC = 0.985) and the cut-off value was 10.5 with a sensitivity value of 72.9% and a specificity of 77.9%. Conclusions: The Indonesian version of the SANS instrument is a valid and reliable instrument for measuring negative symptoms in people with schizophrenia.

Tujuan: Untuk mendapatkan instrumen SANS versi bahasa Indonesia yang sahih dan handal. Metode: Penelitian ini merupakan penelitian diagnostik dengan metode cross-sectional yang bertujuan untuk mencari validitas isi, validitas concurrent, reliabilitas konsistensi internal, reliabilitas inter-rater, nilai cut-off, sensitivitas dan spesifisitas dari instrumen SANS. Hasil: Sebanyak 400 subjek ikut serta dalam studi ini, mayoritas 67.5% subjek berjenis kelamin laki-laki. Median usia subjek adalah 37(18-45) tahun. Pada studi ini didapatkan uji validitas isi baik (mean I-CVI=1.00), uji validitas concurrent membandingkan instrumen SANS dan PANSS subskala gejala negatif mendapatkan hasil bermakna (p<0,001) dengan kekuatan korelasi yang kuat (r=0,763), uji reliabilitas konsistensi internal yang sangat tinggi (cronbach alpha=0,969), uji reliabilitas inter-rater keseluruhan item yang sangat baik (ICC=0,985) dan nilai cut-off sebesar ≥10,5 dengan nilai sensitifitas 72,9% dan spesifisitas 77,9%. Kesimpulan: Instrumen SANS versi bahasa Indonesia merupakan Instrumen yang sahih dan handal untuk mengukur gejala negatif pada orang dengan skizofrenia.