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Table 1: Demographic characteristics and neuropsychological scores of the study cohort
HC (n = 15) aICS (n = 55) P Values (Power)
aICS_L (n = 22) aICS_R (n = 33) aICS_L vs HC aICS_R vs HC aICS_L vs aICS_R
Age 70.67 ± 3.09 64.50 ± 11.68 68.82 ± 9.03 .06 .45 .13
Sex (M:F) 8:7 16:6 25:8 .23 .06 .85
Stenosis (%) – 80.22 ± 12.68 78.91 ± 12.75 – – .71
Handedness (L/R) 0/15 0/22 2/31 1 .33 .24
Mini-Mental State Examination 29.33 ± 0.82 27.32 ± 2.21 28.67 ± 1.31 .002^{^b}(0.94) .08 .01^{^b}(0.76)
Digit Span Test 
 Forward 8.40 ± 0.74 7.95 ± 1.50 8.21 ± 0.99 .29 .52 .45
 Reverse 5.73 ± 1.03 4.45 ± 1.65 5.03 ± 1.67 .01^{^a}(0.77) .14 .21
Verbal Learning Test 
 Immediate recall 53.93 ± 8.37 45.95 ± 12.43 49.64 ± 8.37 .04^{^a} (0.81) .15 .23
 Delayed recall 10.93 ± 1.44 8.14 ± 3.44 9.48 ± 2.00 .01^{^b} (0.92) .02^{^a} (0.87) .07
↵^aP < .05.
↵^bP < .01.