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KMID : 1002520170110020105
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Korean Journal of Health Service Management
2017 Volume.11 No. 2 p.105 ~ p.115
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The Optimal Cut off Score According to Self-Rated Health in Early Adulthood
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Kim Yun-Young
Jang Eun-Su
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Abstract
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Objectives : The aim of this study was to suggest the optimal cut off for best, very good, good, slightly bad, and bad grades.
Methods : The subjects were recruited from 4 areas of South Korea and 487 questionnaires were analyzed. The nominal and continuous self-rated health questions were used to reveal the optimal cut off and the Short Form-12 Health Survey questionnaire (SF-12) was additionally used. Frequency, Pearson’s correlation coefficient, and ROC-curve analysis were used; the significance level was <.05.
Results : Subjects assigned 15(3.1%), 90(18.5%), 237(48.7%), 130(26.7%), and 15(3.1%) to best, very good, good, slightly bad and bad groups respectively. The self-rated health score was associated with total Component (r=.563, p<.001), Physical Component (r=.520, p<.001) and Mental Component of SF-12 (r=.303, p<.001). The optimal cut off was 80.5, 70.5, 53.5, and 40.5 for best, very good or more, good or more, and under slightly bad respectively and area under curve was 0.898, 0.908, 0.945, and 0.908 accordingly.
Conclusions : This study suggests that the self-rated health score and grade could be integrated with the optimal cut off.
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KEYWORD
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Self-Rated Health, Cut off, VAS(Visual Analogue Scale), ROC(Receiver Operating Characteristic)
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