TABLE 1.

Clinical and Demographic Characteristics of Derivation and Validation Datasets

	Derivation dataset (n = 159)		Validation dataset (n = 160)
Characteristic	MCI converters (n = 41)	MCI nonconverters (n = 118)	MCI converters (n = 33)	MCI nonconverters (n = 127)
Age (y)	72 ± 7	73 ± 8	73 ± 8	73 ± 8
Sex (n)
Male	14	55	18	49
Female	27	63	16	111
Mean FAQ ± SD	2.4 ± 3.8	2.7 ± 3.7	2.3 ± 3.5	2.4 ± 3.8
Mean MMSE ± SD	27.8 ± 1.8	27.7 ± 1.8	28.1 ± 1.6	28.1 ± 1.5
APOE ε4–positive rate	78%	49%	90%	40%
Amyloid-positive rate	87%	48%	94%	52%
Mean time to conversion (mo)	41	—	37	—
Follow-up time (mo)
Median	48		47
95% confidence interval	36–51		35–52