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Table 1 Descriptive statistics of RCT participants

From: Pre-contact by telephone increases response rates to postal questionnaires in a population of stroke patients: an open ended randomized controlled trial

  All Participants IG CG  
  N % N IG % N CG   
  217 100 % 105 48,4 % 112 51,6 %  
  Mean sd Mean sd Mean sd p
Age 63,1 13,0 64,1 13,1 62,1 13,1 0,274
  n % n IG % n CG % p
Male 143 65,9 % 67 63,8 % 76 67,9 % 0,532
Partner 139 64,1 % 69 65,7 % 70 62,5 % 0,624
TIA 81 37,3 % 43 41,0 % 38 33,9 % 0,288
INF 122 56,2 % 55 52,4 % 67 59,8 % 0,272
ICH 14 6,5 % 7 6,7 % 7 6,2 % 0,901
  1. Simple descriptive statistics for the RCT participants and for the intervention- and control groups. Mean age and standard deviation of samples. The reported p-values are w.r.t. Welch 2-sided t-test for difference of mean/proportion between the IG and the CG computed with the native R t.test-function