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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.