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Table 2 Cognitive scores of patients with CHF and elderly controls at baseline

From: Clinical treatment reverses attentional deficits in congestive heart failure

 

CHF (n = 50)

Controls (n = 30)

Statistic

p

MMSE (mean)

22.9

25.0

t = 2.6

0.011

CI

21.8 – 24.0

23.8 – 26.2

  

CAMCOG (mean)

71.8

82.0

t = 3.8

<0.001

CI

68.2 – 75.5

78.5 – 85.4

  

Digit Span (mean)

3.8

5.1

z = 3.1

0.002

CI

3.5 – 4.2

4.4 – 5.8

  

Digit Symbol (mean)

10.3

19.3

z = 4.1

<0.001

CI

8.2 – 12.5

14.8 – 23.8

  

Letter Cancellation (mean)

29.9

40.3

z = 3.1

0.002

CI

25.9 – 34.0

34.5 – 46.2

  

Trail Making A (mean)

36.2*

22.2

z=-1.8

0.077

CI

24.8 – 47.7

17.1 – 27.6

  

Trail Making B (mean)

72.9*

36.0

z=-2.8

0.004

CI

53.2 – 92.5

26.6 – 45.4

  
  1. *Information on the Trail Making Test was missing for one patient with CHF. CI = 95% confidence interval of the mean. t = Statistical value of the Student's t-test. z = Standardised statistical value of the Mann-Whitney test.