Reliability And Validity Of The Malay Version Of Patient-Caregiver Relationship Questionnaire For Older Adults With Dementia

ABSTRACT

@#The quality of relationship between a person with dementia and a family caregiver has been identified as one of important factor in informal dementia care. Currently there is no validated questionnaire to measure the dyadic relationship in Malaysia. The aim of present study is to examine the reliability and validity of Quality of the PatientCaregiver Relationship (QCPR) questionnaire in Malay version. A total of 70 patients with mild to moderate dementia and their caregivers were recruited from the psychogeriatric clinic, Universiti Kebangsaan Malaysia Medical Centre using a cross sectional study. The QCPR questionnaire was translated into Malay following the standard guidelines for crosscultural adaptation of measure. The person with dementia and their caregiver completed the QCPR Malay version separately. Internal consistency and test-retest examined for reliability. Construct validity was tested with principal component factor analysis. The reliability of patient QCPR Malay version was good with Cronbach’s alpha coefficients of 0.86 and intraclass correlation coefficients of 0.85. Item 11 was omitted from the caregiver QCPR Malay version due to its poor correlation with the corrected item-total score. The newly formed scale, 13 items caregiver QCPR Malay version, had satisfactory reliability (Cronbach’s alpha 0.89 and intraclass correlation coefficients 0.91). Principal component factor analysis extracted 4 factors for patient version and 3 factors for caregiver version which explained 69.44% (patients’ report) and 61.20% (caregivers’ report) of the total variance of the scale. As a conclusion, both the patient (14 items) and caregiver (13 items) adapted QCPR Malay version is a reliable and valid tool to measure the quality of dyadic relationship between people with mild to moderate dementia and the caregiver.