Sensitivity of Nursing Home Cost Comparisons to Method of Dementia Diagnosis Ascertainment

Table 1

Prevalence and agreement between methods of dementia diagnosis (n = 2050).

	Overall	Correspondence with panel dementia				Correspondence with chart dementia
	prevalence	Agreement	Kappa	Sensitivity	Specificity	Agreement	Kappa	Sensitivity	Specificity
Panel	48.0%	—	—	—	—	78%	0.55	65%	89%
Chart	36.9%	78%	0.55	65%	89%	—	—	—	—
Medicare claims	38.6%	72%	0.43	61%	82%	78%	0.54	73%	82%
Chart or Medicare	48.6%	78%	0.55	77%	78%	—	—	—	—
Panel or chart or Medicare	59.5%	—	—	—	—	—	—	—	—