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. 2017 May 17;12(5):e0177424. doi: 10.1371/journal.pone.0177424

Table 2. Mean participant performance across cognitive measures.

Cognitive Measure All Participants
(N = 133)
Hypertensive
(n = 71)
Non-Hypertensive
(n = 62)
Cohen’s d a
MMSE (0–30) 28.5 (1.4) 28.4 (1.5) 28.7 (1.4) -.21
CVLT-II Trials 1–5 (0–80) 45.6 (10.0) 44.6 (10.5) 46.8 (9.3) -.22
CVLT-II Short Delay Free Recall 9.3 (3.0) 9.0 (3.2) 9.7 (2.7) -.24
CVLT-II Long Delay Free Recall 9.9 (3.1) 9.6 (3.3) 10.2 (2.7) -.20
WAIS-III Digit Symbol Coding 58.3 (14.1) 56.5 (13.9) 60.4 (14.2) -.28
D-KEFS Trail Making Number-Letter Switching (seconds) 103.7 (38.8) 106.2 (40.1) 100.9 (37.4) .14
D-KEFS Color-Word Interference Inhibition (seconds) 65.8 (17.1) 66.8 (17.5) 64.6 (16.8) .13
D-KEFS Letter Fluency 39.5 (12.2) 10.9 (3.3) 11.6 (4.0) -.19
D-KEFS Animal Fluency 18 (4.8) 17.1 (4.1) 19.0 (5.3) -.40*
Everyday Problem Solving 32.9 (13.4) 30.0 (11.3) 36.2 (15.0) -.47**
Everyday Problems Test (0–36) 25 (6.3) 24.3 (6.7) 25.8 (5.7) -.24
Everyday Cognitive Battery Knowledge (0–30) 22.8 (2.7) 22.1 (2.7) 23.5 (2.5) -.54**

Raw scores are presented as means and standard deviations M (SD). MMSE = Mini Mental Status Examination. CVLT-II = California Verbal Learning Test-II. WAIS-III = Wechsler Adult Intelligence Scale-Third Edition. D-KEFS = Delis-Kaplan Executive Function System. Trail Making and Color-Word subtests are scored in seconds, where higher score indicates worse performance.

a Effect sizes comparing Hypertensive and Non-Hypertensive group means were examined using Cohen’s d in conjunction with independent-sample t-tests for group mean comparisons as indicated by *p < .05, ** p < .01, + p < .001.