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Determining a cutoff score for the family burden interview schedule using three statistical methods.

Yu Yu1, Zi-Wei Liu2, Wei Zhou3

  • 1Hospital Evaluation Office, Xiangya Hospital, Central South University, Xiangya Road 87, Changsha, 410008, Hunan, China.

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Summary

A new cutoff score of 23 for the Family Burden Interview Schedule (FBIS) helps identify family caregivers needing support. This score aids healthcare providers in assessing at-risk caregivers for timely interventions.

Keywords:
CutoffFamily burden interview schedule (FBIS)K-means clustering techniqueLinear regressionSensitivitySpecificityTree-based modeling

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Area of Science:

  • Psychiatry
  • Mental Health Research
  • Caregiver Support

Background:

  • Family burden in schizophrenia care is significant.
  • Effective psycho-social interventions can alleviate caregiver burden.
  • A validated measure and cutoff for family burden is needed.

Purpose of the Study:

  • Determine a statistically valid cutoff score for the Family Burden Interview Schedule (FBIS).
  • Use Patient Health Questionnaire (PHQ-9) and Generalized Anxiety Disorder Scale (GAD-7) scores as reference points.

Main Methods:

  • Administered FBIS, PHQ-9, and GAD-7 to 327 family caregivers of schizophrenia patients.
  • Employed tree-based modeling, K-means clustering, and linear regression to establish the FBIS cutoff.
  • Utilized contingency analysis to compare FBIS cutoff with depression and anxiety scores.

Main Results:

  • A cutoff score of 23 was proposed for the FBIS.
  • The proposed cutoff demonstrated 76% sensitivity and 68% specificity against PHQ-9.
  • The proposed cutoff demonstrated 74% sensitivity and 67% specificity against GAD-7.

Conclusions:

  • The FBIS cutoff score of 23 aids in identifying at-risk family caregivers.
  • This tool enables healthcare providers to offer timely interventions.
  • Improved assessment can enhance the quality of life for family caregivers.