Construction of perceived severity of illness assessment tool in patients with Systemic Lupus Erythematosus
Keywords:severity of illness, perceived
AbstractThe purpose of this study was to construct a questionnaire for evaluate severity of illness in patientswith systemic lupus erythematosus . Data collection was conducted from 150 SLE patients who come forfollow - up at out patient department in Srinagarind Hospital, Khon Kaen University during June to July2008. The results of study are as follow:Patients with SLE was perception of illness severity at moderate level ( = 69.95, SD =45.55).Exploratory factor analysis was used to examine the construct validity showed six factors of were (1)Social: 6 items, = 0.89; (2) Physical: 8 items, α= 0.87; (3) psychological: 7 items, α= 0.92 and (4)Body image: 4 items, α= 0.83; (5) bodily pain: 2 items, α= 0.67 and (6) Immune: 2 items, α= 0.45. The29 items showed high reliability with a standardized alpha coefficient of 0.93. Concurrent validity with SF-36. The physical dimension of constructed tool was negatively correlated with SF-36 PCS (r = - 0.38, p<0.01 ) and negatively correlated with SF-36 MCS (r = - 0.43, P < 0.01) . The psychologicaldimension, social dimension, body image dimension, bodily pain dimension was negatively correlated withSF-36 MCS (r = -0.75, p <0.01; r = - 0.70, p < 0.01; r = - 0.50, p < 0.01 and r = - 0.43, p <0.01respectively). The low immune dimension was negatively correlated with SF-36 PCS (r = - 0.24, p < 0.01)These findings indicated a preliminary evidence for the validity and reliability of the constructed tool.
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