Acceptability of Palliative Care in Parkinson Disease Care

We will assess the feasibility of standardized referral to palliative care by calculating the proportion of enrolled participants with Parkinson disease who have at least 1 visit with a palliative care provider within 3 months of referral.

Symptom burden will be measured using the Edmonton Symptom Assessment Scale-Revised for Parkinson Disease (ESAS-R: PD), which measures the severity of 14 symptoms on a 1-10 scale. Scores range from 0-140 with higher scores indicating higher symptom burden.

Quality of life will be measured using the Quality of Life-Alzheimer Disease questionnaire, which is a 13-item measure that assesses overall quality of life with a focus on physical, social, psychological, and spiritual well-being. Scores range from 13-52 with higher scores indicating better quality of life.

Caregiver burden will be measured using the Zarit Burden interview, which is a 22-item questionnaire that assesses caregiver fear, anger, guilt, perspective, hope, and overall quality of life. Scores range from 0-88 with a score of 0-21 associated with little or no burden, 21-40 mild to moderate burden, 41-60 moderate to severe burden, and 61-88 severe burden.

Caregiver self-efficacy will be measured using the Revised Scale for Caregiver Self-efficacy, which is a 15-item questionnaire with 3 sub-sections (self-efficacy for obtaining respite, self-efficacy for responding to disruptive patient behaviors, and self-efficacy for controlling upsetting thoughts about caregiving). Respondents rate their certainty of being able to complete each task from 0% (cannot perform task at all) to 100% (certain that task can be performed). Scores on each of the sub-sections range from 0-500 with a higher score indicating greater self-efficacy.

Barriers to palliative care referral will be measured using a novel qualitative survey that assesses perceived barriers to referral and drivers of desire for referral to palliative care among those with Parkinson disease. The measure includes a qualitative survey of 9 potential barriers to consultation and 5 potential reasons to undergo consultation. Respondents can select as many barriers or reasons as applicable to their perception of referral and can provide free text responses. Overall frequency of selection of each identified barrier among participants will be assessed both at baseline and at 3 months following palliative care referral. Barriers and reasons for referral with higher frequency will be considered to be more important in hindering or driving desire for referral, respectively.

Barriers to palliative care referral will be measured using a novel qualitative survey that assesses perceived barriers to referral and drivers of desire for referral to palliative care among those with Parkinson disease. The measure includes a qualitative survey of 9 potential barriers to consultation and 5 potential reasons to undergo consultation. Respondents can select as many barriers or reasons as applicable to their perception of referral and can provide free text responses. Overall frequency of selection of each identified barrier among participants will be assessed both at baseline and at 3 months following palliative care referral. Barriers and reasons for referral with higher frequency will be considered to be more important in hindering or driving desire for referral, respectively.