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

Table 2

Agreement between HD and observer before and after training, presented as Cohens kappa (κ) and Cohens weighted kappa (κ_w).

	Before training			After training			value^b
	Cohen’s κ	95% CI^a		Cohen’s κ	95% CI
Overall agreement	.438	.373	.503	.559	.473	.645	.320
Observed “on without dyskinesias”	.390	.319	.461	.560	.464	.656	.191
Observed “off”	.644	.552	.734	.608	.451	.765	.625
Observed “on with dyskinesias”	.388	.312	.464	.543	.447	.637	.299
	Cohen’s κw	95% CI		Cohen’s κw	95% CI		value
Overall agreement	.474	.410	.537	.559	.468	.650	.539

^aCI: confidence interval. ^bSignificance levels was calculated on the difference before and with treatment using the delta method in the “multiagree” package in R.