Browsing by Author "Kawamura, N."

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    Validation of Kessler's psychological distress scale among the Sinhalese population in Sri Lanka
    (SAARC Psychiatric Federation, 2011) Wijeratne, L.T.; Williams, S.S.; Rodrigo, M.D.A.; Peiris, M.U.P.K.; Kawamura, N.; Wickremasinghe, A.R.
    OBJECTIVE: Kessler's psychological distress scales, KlO and K6 are short rating scales designed to screen psychiatric morbidity in the population. Despite being increasingly popular elsewhere, they have not been validated in Sri Lanka. We examined the validity of these scales among the Sinhala speaking population in the Gampaha district of Sri Lanka. DESIGN: The English language version of the KiD and K6 questionnaire were translated into Sinhala using standard methods. The KiD and K6 scores for 27 healthy and 37 psychiatrically ill individuals were compared with the Structured Clinical Interview for DSM disorders (SClD) outcome categories. RESULTS: The KiD and K6 were sensitive and specific in detecting mental illness, especially depression. Those with schizophrenia had scores similar to healthy individuals. We suggest cut offs of 12 for KiD and 7 for K6 having 9D% sensitivity and 81% specificity for both scales. INTERPRETATION: KiD and K6 are valid screening tools for non-psychotic psychiatric illness among the Sinhala speaking population in Sri Lanka. They can be used in psychiatric epidemiological studies.
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    The validation of the Sinhala version of the Kessler psychological distress scale (K10) to screen for psychiatric morbidity
    (Sri Lanka Medical Association, 2008) Wijeratne, L.T.; Williams, S.S.; Peris, M.U.P.K.; de Silva, N.R.; Hapuarachchi, H.A.C.; Perera, K.P.J.; Kawamura, N.; Wickremasinghe, A.R.
    BACKGROUND: The Kessler psychological distress scale (K10), used in epidemiological surveys, measures psychological distress. High scores in community surveys are associated with anxiety and affective disorders, and to a lesser extent, with other psychiatric disorders. OBJECTIVE: To validate the Sinhala translations of the long (K10) and short (K.6) versions of the Kessler psychological distress scale. DESIGN, SETTING AND METHODS: The English version of K10 was translated into Sinhala. Content and face validity was assessed by experts. The scales were pre-tested and modified accordingly. The Sinhala versions of K6 and K10, and the Structured Clinical Interview Schedule were administered to 20 adults with major psychiatric illnesses diagnosed by two clinicians independently, and to a random sample of 25 apparently normal people from the community. SPSS (Version 11) was used for the analysis. RESULTS: The ROC curve for the K10 contained 96.1% of the area under the curve of 0.961 (95% CI 90.4%-100%). A cut off score of 22 for the K10 yielded a sensitivity of 93.8% and a specificity of 82.6%. The ROC curve for the K6 contained 90.1% (95% CI 80.5% - 99.7%) of the area under the curve. For the K6, a cut off score of 13 gave a sensitivity of 88.2% and a specificity of 72%, The total number of days that the patient could not attend to regular work and responsibilities was significantly correlated with both the K10 (p=0.041) andK6 (p=0.023). CONCLUSION: The Sinhala version of the K10 and K6 questionnaires can be used to screen for psychological distress.