Cancer Caregiver Anxiety Over Time: The Influence of Palliative Care

<b>Objectives:</b> To explore anxiety experienced by caregivers providing home-based, end-of-life care to patients with cancer. We examined the relationship between caregiver anxiety and receipt of palliative care by the patient. <b>Methods:</b> A case series of terminal cancer patient-caregiver dyads (n = 223) were recruited from oncology clinics in Virginia and Pennsylvania and followed for 12 months or until patient death. Data collected included qualitative, quantitative, and observational data; this analysis utilizes the quantitative data. Longitudinal Latent Growth Models were used to characterize the heterogeneity of primary caregiver anxiety over time. The influence of palliative care on caregiver anxiety over time was assessed. Characteristics associated with membership in the trajectory groups rendered from those models are presented. <b>Results:</b> The majority of caregivers were female (73.9%), white (54.9%), and patient spouses (45.3%). Three classes of caregivers were identified based on their anxiety scores over time (low, elevated, and high). The 2 groups who had elevated and high anxiety had significant increases in anxiety over time. Controlling for patient receipt of palliative care attenuated those increases. Caregivers with the lowest level of anxiety were more likely to be Black, report fewer symptoms of depression or caregiver burden and higher self-rated physical health. Caregivers who were younger reported higher anxiety. <b>Conclusions:</b> Our analysis detected 3 distinct cancer caregiver groups reporting low, elevated, and very high levels of anxiety. Caregivers with elevated or high anxiety also demonstrated increasing anxiety overtime; however increases were attenuated with patient receipt of palliative care. For cancer caregivers with elevated and high levels of anxiety, palliative care buffers further deterioration of their mental health.