Table 2. Mean Change From Baseline to 6-Month Outcomes for Rating Scales and Levodopa Equivalent Daily Dose Values^a.

Rating scale	Standard of care or some expert care		Home health care		P value
	Participants, No.	Mean (SD) score	Participants, No.	Mean (SD) score
Standard of care vs home health care
UPDRS III off-medication	14	−5.3 (14.3)	16	−13.4 (12.6)	.27
UPDRS III on-medication	15	−2.7 (12.7)	16	−0.4 (9.6)	.90
Total UPDRS off-medicationb	13	−0.8 (20.2)	16	−16.9 (15.7)	.08
PDQ-39	12	−3.9 (23.4)	15	−9.0 (15.5)	.97
Multidimensional Caregiver Strain Index score	5	−4.2 (11.2)	12	−1.3 (6.7)	.53
Levodopa equivalent daily dose, mg	17	−86.8 (397.0)	17	−70.5 (438.2)	.91
Some expert care vs home health care only
UPDRS III off-medication	17	−5.1 (13.1)	13	−15.6 (12.8)	.20
UPDRS III on-medication	18	−1.3 (12.2)	13	−1.8 (9.7)	.85
Total UPDRS off-medicationb	16	−1.6 (18.7)	13	−19.5 (15.5)	.04
PDQ-39	15	−5.0 (21.1)	12	−8.9 (17.2)	.90
Multidimensional Caregiver Strain Index score	7	−3.4 (9.3)	10	−1.3 (7.4)	.42
Levodopa equivalent daily dose, mg	20	−26.9 (428.6)	14	−152.5 (389.8)	.40

Abbreviations: PDQ-39, 39-question Parkinson’s Disease Questionnaire; UPDRS, Unified Parkinson’s Disease Rating Scale; UPDRS III, Unified Parkinson’s Disease Rating Scale part III.

^a Negative values imply improvement in parkinsonian symptom severity (UPDRS and PDQ-39 scores), lowered caregiver strain (Multidimensional Caregiver Strain Index scores), or reduced levodopa equivalent daily doses. Grouping was done by both study arm and comparing patients who underwent at least 1 clinic deep brain stimulation postoperative management visit compared with those exclusively managed by home health. The UPDRS scores recorded at baseline were in the off-stimulation state, while 6-month outcomes were recorded in the on-stimulation state.

^b The total UPDRS is the sum of parts I, II, III, and IV.