Factors Associated With Family Caregiver Burden of Home-Dwelling Patients With Advanced Dementia

To realize patients' preferences for home death, this study aimed to identify factors associated with family caregiver burden of home-dwelling patients with advanced dementia and examine its relationship with end-of-life care treatment decisions.

A prospective cohort study.

Patient-family caregiver dyads enrolled in a home-based palliative care program for patients with advanced dementia, with family caregiver burden assessed using the Zarit Burden Interview (ZBI) on enrolment, were included.

Independent variables included sociodemographic data, patients' clinical phase, symptom severity, quality of life, informal paid help availability, and community resources utilized. Dependent variable was continuous ZBI scores and ZBI scores dichotomized into <24 and ≥24 for predicting depression risk. Place of death and interventions received 2 weeks before death were also collected. Data were analyzed using multivariate linear and logistic regression.

From October 2014 to December 2020, a total of 377 family caregivers were assessed with ZBI. Median score was 25 (IQR 15-36), and 54.4% of them were at risk of depression. Younger family caregivers had higher ZBI scores (β = -0.22, 95% CI -0.38, -0.07), with the depression risk doubling for family caregivers aged <60 years (OR 2.13, 95% CI 1.33, 3.43). Absence of informal paid help also increased the ZBI scores (β = -9.04, 95% CI -14.86, -3.22) and depression risk (OR 2.50, 95% CI 1.03, 6.09). In addition, caregivers' ZBI scores increased with patients' neuropsychiatric symptom severity (β = 0.49, 95% CI 0.08, 0.89), and caregivers of clinically unstable patients had a higher depression risk (OR 1.80, 95% CI 1.03, 3.12). Baseline caregiver burden was not associated with treatment decisions made at the end of life.

Younger family caregivers caring for clinically unstable patients with severe neuropsychiatric symptoms experienced greater burden without informal paid help. For end-of-life care at home in advanced dementia to be tenable, relevant national agencies and stakeholders are recommended to work collectively to support family caregivers holistically.