BMC medical research methodology · 2019
Determining a cutoff score for the family burden interview schedule using three statistical methods.
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Yu Yu, Liu Zi-Wei, Zhou Wei, Zhao Mei, Tang Bing-Wei, Xiao Shui-Yuan
Аннотация
BACKGROUND: While it is widely acknowledged that family burden can be ameliorated with effective psycho-social interventions, how to measure family burden and define a valid cutoff to identify family caregivers in need of such interventions remains a key question. The purpose of the present study was to determine a statistically valid cutoff score for the Family Burden Interview Schedule (FBIS), using the cutoff scores of the Patient Health Questionnaire (PHQ-9) and the Generalized Anxiety Disorder Scale (GAD-7) as the reference.
METHODS: The FBIS, PHQ-9, and GAD-7 were administered to a representative community sample of 327 family caregivers of schizophrenia patients. A FBIS cutoff score was determined using three different statistical methods: tree-based modeling, K-means clustering technique and linear regression. Contingency analysis was conducted to compare the FBIS cutoff with depression and anxiety scale scores.
RESULTS: Findings proposed a cutoff score of 23 for the FBIS, with sensitivity being 76% for PHQ-9 and 74% for GAD-7, specificity being 68% for PHQ-9 and 67% for GAD-7.
CONCLUSION: This cutoff score would enable health care providers to assess family caregivers at risk and provide necessary interventions to improve their quality of life.
METHODS: The FBIS, PHQ-9, and GAD-7 were administered to a representative community sample of 327 family caregivers of schizophrenia patients. A FBIS cutoff score was determined using three different statistical methods: tree-based modeling, K-means clustering technique and linear regression. Contingency analysis was conducted to compare the FBIS cutoff with depression and anxiety scale scores.
RESULTS: Findings proposed a cutoff score of 23 for the FBIS, with sensitivity being 76% for PHQ-9 and 74% for GAD-7, specificity being 68% for PHQ-9 and 67% for GAD-7.
CONCLUSION: This cutoff score would enable health care providers to assess family caregivers at risk and provide necessary interventions to improve their quality of life.