Table 1.

Sample characteristics.

	MCI			AD-PR			AD-PS			Total
	M	SD	N	M	SD	N	M	SD	N	M	SD	N
Age	76.00	7.33	31	78.20	6.87	55	78.04	7.11	27	77.56	7.06	113
Education (yrs)	14.71	2.72	31	12.49	2.53	55	14.19	2.50	27	13.50	2.75	113
Intake MMSE	25.84	2.41	31	22.84	3.54	55	25.30	3.00	27	24.25	3.41	113
Observations*	5.67	2.73	30	5.79	2.86	47	4.80	2.33	25	5.51	2.71	102
Follow-up (yrs)*	4.03	1.95	30	4.01	2.45	47	3.71	2.11	25	3.94	2.22	102
GDS – 30 item	7.32	3.92	28	7.59	5.81	46	6.04	4.28	25	7.12	4.96	99
Information	17.87	4.14	30	12.72	4.65	54	15.54	3.44	26	14.79	4.76	110
AMNART errors	18.27	10.19	30	22.28	9.41	53	20.48	8.13	27	20.75	9.41	110
Digit Span Fwd.	6.32	1.33	31	6.02	1.19	55	6.44	1.25	27	6.20	1.25	113
TMT A time	42.53	16.99	30	79.20	45.08	55	52.58	20.88	26	63.05	38.00	111
Block Design	27.97	10.06	31	17.55	8.36	55	24.38	7.59	26	22.02	9.77	112
RCFT figure copy	28.80	5.67	30	18.85	8.63	53	26.54	5.01	26	23.42	8.42	109
RCFT figure recall	8.67	5.01	30	2.89	2.62	53	7.19	4.76	26	5.50	4.70	109
Logical Memory II	8.87	7.39	31	2.57	3.32	53	6.00	5.27	27	5.16	5.83	111
CVLT-II free recall	2.46	2.06	26	0.96	1.62	46	3.25	2.97	24	1.94	2.34	96
Boston Naming	50.70	5.10	30	43.91	9.91	54	47.89	8.72	27	46.71	8.98	111
SVF (animals)	14.03	3.57	31	10.02	4.33	55	12.93	3.46	27	11.81	4.30	113
PVF (F + A + S)	32.97	9.93	31	22.96	12.91	55	34.07	12.98	27	28.36	13.19	113
Digit Span Back.	4.19	1.11	31	3.48	1.06	54	3.96	1.06	27	3.79	1.11	112
Digit Symbol	47.23	10.67	31	31.08	10.17	52	38.08	9.86	26	37.34	12.25	109
TMT B time	116.90	49.41	30	244.69	74.76	42	173.80	82.25	25	186.90	88.62	97
Stroop interference	171.83	66.84	24	241.53	78.73	32	190.50	57.45	22	205.69	75.42	78

^*M/SDs are restricted to those participants in the longitudinal analysis (having two or more MMSE observations).