Table 2

Inclusion and exclusion criteria for participants and companions

Inclusion criteria—participant Exclusion criteria—participant
Have a diagnosis of possible or probable PDD, MCI-PD or DLB. Diagnosis will be based on standard clinical diagnostic criteria34–36 determined by the referring clinician and verified on screening.Lack sufficient physical and mental capability to participate in the therapy. Capability will be based on clinical impression at the initial screening visit and informed by scores obtained on the Schwab and England Activities of Daily Living Scale22 and MoCA.21
Be willing to participate in 30 min sessions of the intervention, three times per week.Current involvement in any other dementia intervention research study.
Be on a stable on medication regimen for at least 4 weeks, prior to study entry.Unable to understand conversational English, are non-literate or have physical or mental illness severe enough to preclude participation in the study.
Living in residential care.
Inclusion criteria—companion Exclusion criteria—companion
Provide care or support for a person with Parkinson's-related dementia.Lack capacity to consent to the study to ensure and able to undertake the training and delivery of the intervention.
Be willing and well enough to deliver 30 min sessions of the intervention, three times per week.Unable to understand conversational English, are non-literate or have physical or mental illness severe enough to preclude participation in the study.
Be familiar with the participant's physical and mental health and able to provide feedback about this to the study team.A diagnosis of dementia; the presence of dementia in the companion will be determined by self-report as well as clinical impression informed by performance on the MoCA.21
  • DLB, dementia with Lewy bodies; MoCA, Montreal Cognitive Assessment; MCI-PD, Parkinson's disease with mild cognitive impairment; PDD, Parkinson's disease dementia.