Table 2. Annual cost per person with dementia by disease severity.

Cost category	Mild (n = 102)		Moderate (n = 88)		Severe (n = 41)		P-value
	Mean NT$	SD	Mean NT$	SD	Mean NT$	SD
Medical costs
Outpatient	17,303	14,674	17,444	20,509	15,082	20,669	0.258
Drugs	30,065	35,229	25,630	24,427	13,767	9,892	0.002
Inpatient	14,228	45,470	11,591	52,251	8,820	34,480	0.251
OOP	24,093	28,146	27,118	24,831	38,378	41,886	0.195
Total	85,689	87,485	81,782	88,523	76,047	75,240	0.617
Social care costs	41,331	93,568	117,031	146,962	173,079	148,024	<0.001
Informal care costs
Opportunity cost	91,623	140,151	110,134	131,133	190,846	202,290	0.006
Replacement cost	199,466	149,442	214,784	149,648	231,659	176,141	0.688
Total costsa
Base-case	218,644	199,843	308,947	210,289	439,972	250,254	<0.001
Upper-bound	326,487	193,155	413,598	182,676	480,786	216,198	<0.001

OOP = out-of-pocket costs; 1NT = 14.97 US-PPP in 2014.

^a Total costs base-case estimate included informal care costs valued by the opportunity cost approach; total costs upper-bound included informal care costs valued by the replacement cost approach.