Systematic Review and Critical Analysis of Cost Studies Associated with Parkinson’s Disease

Table 6

Most common variables found in the cost studies of Parkinson’s disease.

Patient/disease	Direct medical cost	Direct nonmedical cost	Indirect cost	Out-of-pockets
Age	Hospitalization	Ancillary therapy/rehabilitation	Retirement	Transportation
Gender	Pharmacotherapy; (PD and comorbidities)	Home Care	Retirement premature	Special food
Marital status	Outpatient visit	Transportation	Sick leave	Laundry
Instruction	Diagnostics	Special equipment	Working days loss of the patient	Home Care
Working status	Nursing home	Home modification	Working days loss of the caregivers	Caregivers
Duration of PD		Copayments	Productivity loss	Special equipment
Comorbidities			Loss of leisure time	Home modification
H & Y stage^1				Private health plans
UPDRS^2				Copayments
PQD-39^3
MMSE^4

Hoehn & Yahr scale of disability/Unified Parkinson’s Disease Rating Scale/Parkinson’s Disease Questionnaire–39 (quality of life)/Mini-Mental State Examination.
Variables that may be in more than one cost type.