Table 1. Caregiver stress and disease characteristics of patients with Parkinson’s.

PD: Parkinson's Disease; HY Scale: Hoehn and Yahr Scale; CBI: Caregiver Burden Inventory

Stressed: CBI score ≥36

Not stressed: CBI score <36

Characteristics of the PD patients	CBI category for caregivers		P-value
	Stressed n (%)	Not stressed n (%)
Severity of PD on HY scale
Stage 5	29 (80.5%)	7 (19.5%)	0.0008
Stage 4	25 (67.5%)	12 (32.5%)
Stage 3	20 (69.0%)	9 (31.0%)
Stage 2	17 (58.6%)	12 (41.3%)
Stage 1	7 (28.0%)	18 (72.0%)
Duration of diagnosis
Less than 10 years	29 (41.5%)	41 (58.5%)	<0.00001
More than 10 years	69 (80.2%)	17 (19.7%)
On-off phenomenon
Present	48 (81.3%)	11 (18.6%)	0.002
Absent	50 (51.4%)	47 (48.5%)