Table 4.

Association between clinical variables of PD and caregiver burden

Correlation variables		Pearson’s correlation coefficient	P
Total ZBI score	Age of patient	0.352	0.001*
Total ZBI score	Duration of illness	0.300	0.007*
Total ZBI score	H & Y stage	0.536	0.000*
Total ZBI score	Total NPI score	0.804	0.000*
Total ZBI score	Education level of caregiver	0.022	0.850
Total ZBI score	Type of relationship with patient	0.154	0.174
Total ZBI score	No. of years caring	0.300	0.007*

*P value<0.05