Table 3.

Clinical diagnoses and latent stages for pairs of consecutive evaluations

Consecutive annual clinical diagnoses
Prior visits	Subsequent visits
Frequency Row Pct	NCI	MCI	Dementia	Death	Total
NCI	3133	573	75	301	4082
	76.75	14.04	1.84	7.37
MCI	286	397	173	172	1028
	27.82	38.62	16.83	16.73
Dementia	10	58	204	180	452
	2.21	12.83	45.13	39.82
Total	3429	1028	452	653	5562

Consecutive latent stages
Prior visits	Subsequent visits
Frequency Row Pct	Stage 1	Stage 2	Stage 3	Stage 4	Total
Stage 1	2755	413	21	219	3408
	80.84	12.12	0.62	6.43
Stage 2	-	1165	198	215	1578
		73.83	12.55	13.62
Stage 3	-	-	357	219	576
			61.98	38.02
Total	2755	1578	576	653	5562

1. NCI, no cognitive impairment; MCI, mild cognitive impairment

2. Stage 1, no impairment; Stage 2, mild impairment; Stage 3, moderate impairment; Stage 4, death.

3. Numbers in bold font correspond to forward transitions.