Table 1.

Classification of the cross‐sectional study cohort

Variable	CNh	CNr	MCI	AD
N (F)	27 (16)	15 (6)	21 (13)	17 (11)
Age	67.0 ± 9.2	68.1 ± 10.0	73.2 ± 8.1	71.1 ± 6.6
BMI	26.3 ± 5.0	25.2 ± 4.6	24.6 ± 4.6	26.0 ± 4.1
MMSE	28.4 ± 1.1	28.4 ± 1.5	22.5 ± 1.5‡	14.2 ± 4.3‡
CDR	0.0 ± 0.2	0.1 ± 0.2	0.8 ± 0.3‡	1.4 ± 0.6‡
UPSIT(%)	0.7 ± 0.1	0.5 ± 0.1‡	0.5 ± 0.2‡	0.3 ± 0.2‡ , #
APOEε4	10	5	10	8
Education*	1.5 ± 0.6	2.1 ± 0.8	1.6 ± 0.7	1.7 ± 0.7

Values are means ± SD.

F, female; M, male, MMSE, Mini‐Mental Status Exam; UPSIT, University of Pennsylvania Smell Identification Test.

^*Is for level of education: 1 = <12 years of school; 2 = 12–15 years of school.

^‡ P < 0.01 from pairwise comparison with CNh using Student's t test.

^# P = 0.05 from pairwise comparison with MCI using Student's t test.