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Table 1 Sample size calculations

From: Cardiac rehabilitation adapted to transient ischaemic attack and stroke (CRAFTS): a randomised controlled trial

  % adherence to European Guidelines on CVD prevention in high risk group(CRAFTS baseline data)   Target change to detect % Sample size per group
Moderate or vigorous exercise for 20 mins 3 or more times/week 17   Increase by 20% 73
Dietary intake of 3 vegetables portions & 2 fruit portions or more/day 21   Increase by 20% 80
No smoking % in stroke and TIA patient population 85   Increase by 15% 61
% subjects fulfilling all 3 criterion 9   Increase by 20% 56
  Mean (sd) of baseline measures from pilot study in stroke patients Mean change in intervention group – pilot study Target change to detect  
Cardiac Risk Score 9.4 (6.80) 1.52 4.0 72
VO2 exercise test 10.87 (1.71) 1.48 1.0 46
HAD – Anxiety subscale 6.13 (3.71) 0.86 1.5 54