Agreement between Parkinson Disease Home Diary and Observer Assessments before and after Structured Patient Training

Table 3

Reliability of the PD home diary according to intraclass correlation coefficient (ICC) calculation^a.

HD vs. observer diary	ICC (95% CI)	-test with true value 0
		Value	df1	df2	value
Before training
Off	0.85 (0.66-0.94)	11.98	19	19	<0.001
On without dyskinesia	0.74 (0.45-0.89)	6.46	19	19	<0.001
On with dyskinesia	0.68 (0.34-0.86)	4.995	19	19	<0.001
After training
Off	0.73 (0.44-0.89)	6.23	19	19	<0.001
On without dyskinesia	0.85 (0.65-0.94)	11.56	19	19	<0.001
On with dyskinesia	0.77 (0.50-0.90)	7.40	19	19	<0.001

^aICC estimates and 95% CIs were calculated based on single-rating, absolute-agreement, 2-way mixed-effects models with two raters (patient diary and observer diary) across 20 participants.