Table A1.

Comparison of baseline data of the dropouts with baseline date of the caregiver with completed follow-up.

	Mean ± SD (n = 84 with Follow-Up)	Mean ± SD (n = 32 Drop-Outs)
Caregivers (at t0)
Age (years)	65.1 ± 10.3	66.01 ± 13.0
Caregiving hours per day	5.3 ± 6.5	6.9 ± 6.2
PDCB	30.4 ± 16.4	37.8 ± 17.4
BDI	9.4 ± 6.8	11.0 ± 8.5
SF—36 total	67.7 ± 18.6	45.8 ± 33.8

Abbreviation: BDI, Beck’s depression inventory; PDCB, Parkinson’s disease caregiver burden questionnaire; SD, standard deviation; SF-36, short-form 36 health survey.