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. 2015 May 28;2015:961314. doi: 10.1155/2015/961314

Table 1.

Demographics of the study group.

Analysis Cohort Class Subjects (female proportion) Mean age (SD) Mean years of schooling (SD)
HC-AD Feature selection set HC 48 (37.5%) 74.2 (5.2) 15.6 (3.2)
AD 48 (37.5%) 74.6 (7.6) 14.6 (3.7)
Calibration set HC 75 (34.7%) 74.4 (4.9) 16 (3.1)
AD 70 (38.6%) 74.9 (7.1) 14.5 (3.4)
Test set HC 25 (48%) 75.8 (4.1) 15.5 (3.3)
AD 23 (47.8%) 74.5 (8) 15.1 (2.9)

HC-MCI Feature selection set HC 44 (40.9%) 73.9 (5.2) 15.6 (3.2)
MCI 86 (31.4%) 74.5 (7) 15.8 (3)
Calibration set HC 74 (50%) 74.6 (5.3) 15.5 (3)
MCI 124 (32.3%) 74.3 (6.9) 15.6 (3)
Test set HC 24 (62.5%) 73.8 (4) 16.1 (2.3)
MCI 41 (39%) 72.9 (7.9) 15.9 (3.3)

MCI-AD Feature selection set MCI 89 (30.3%) 74.2 (7.2) 16 (3)
AD 43 (37.2%) 74.5 (7.6) 14.6 (3.8)
Calibration set MCI 257 (33.5%) 74.1 (7.1) 15.7 (3.1)
AD 71 (46.5%) 74.4 (7.1) 14.7 (3.4)
Test set MCI 86 (37.2%) 72.9 (7.4) 15.9 (3)
AD 24 (37.5%) 72.8 (10) 16 (2.7)

SD stands for standard deviation.