Table 3. Description of Parkinson’s disease costs during the four years of study by disease severity.

	Year 1			Year 2			Year 3			Year 4
	Direct Cost	Indirect Cost	Total Cost	Direct Cost	Indirect Cost	Total Cost	Direct Cost	Indirect Cost	Total Cost	Direct Cost	Indirect Cost	Total Cost
HY I-II
N	131	52	131	125	49	125	122	53	122	108	43	110
Mean	1,089.29	1,659.78	1,748.14	773.24	1,291.21	1,279.39	1,337.09	1,395.22	1,943.21	1,477.43	2,816.47	2,551.55
SD	1,614.17	2,000.76	2,411.94	903.71	1,562.13	1,569.83	1,817.52	1,950.19	2,448.41	2,309.24	3,004.36	3,395.28
Minimum	16.65	21.38	16.65	2.03	21.38	2.03	25.20	21.38	25.20	30.60	37.52	37.52
Maximum	10,442.78	10,777.20	13,716.06	6,540.90	9,328.20	9,665.63	10,774.41	12,932.64	14,397.49	18,198.36	16,662.21	20,680.56
HY III
N	34	16	34	40	27	40	42	30	42	49	35	50
Mean	2,017.71	1,222.59	2,593.05	1,949.78	1,416.39	2,905.84	2,920.56	3,079.85	5,120.45	3,141.10	5,475.38	6,911.04
SD	3,622.67	1,153.44	3,671.23	3,650.10	1,252.08	4,050.30	4,926.04	8,067.23	10,870.59	7,599.18	12,611.05	12,698.30
Minimum	179.94	37.50	179.94	36.00	37.52	52.20	76.50	37.52	114.02	25.37	37.52	37.52
Maximum	20,948.08	3,570.70	20,948.08	22,298.34	4,092.24	24,233.23	22,620.09	44,775.36	67,395.45	51,180.60	55,680.62	56,730.81
HY IV-V
N	7	7	7	8	8	8	7	7	7	7	12	12
Mean	2,656.27	3,281.81	5,938.09	1,616.21	6,881.98	8,498.18	2,342.99	2,977.15	5,320.14	2,682.55	3,745.42	5,310.24
SD	2,929.58	4,282.39	4,325.54	716.79	15,351.78	15,429.76	1,899.33	4,120.90	5,849.04	2,076.70	6,328.80	7,176.07
Minimum	489.78	75.04	1,476.00	559.71	37.52	2,120.19	698.91	37.52	2,064.79	315.00	37.52	37.52
Maximum	8,369.29	12,830.48	13,397.97	2,450.50	44,812.88	46,631.75	6,402.87	12,083.92	18,486.79	6,673.52	19,879.60	21,545.95

HY: Hoehn and Yahr; SD: standard deviation