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Table 3 Confidence in assessing studies

From: The design, fate and impact of a hospital-wide training program in evidence-based medicine for physicians – an observational study

  Before/after Total Very or quite confident Not very or not at all confident p-value*
Study aspect   n % %  
Assessing study design Before: 173 42 % 31 %  
After: 173 62 % 8 % <0.0001
Evaluating bias Before: 172 30 % 41 %  
After: 173 44 % 19 % <0.0001
Evaluating the adequacy of sample size Before: 171 22 % 51 %  
After: 173 24 % 33 % <0.0001
Assessing generalizability Before: 172 30 % 41 %  
After: 172 45 % 12 % <0.0001
Evaluating statistical tests/principles Before: 171 13 % 64 %  
After: 172 19 % 42 % <0.0001
Assessing the general worth of an article Before: 173 45 % 25 %  
After: 172 65 % 5 % <0.0001
  1. Distribution of responses before and after training to the survey question “How confident do you think that you are at assessing each of these aspects of a published paper?”
  2. *Wilcoxon test for matched pairs – comparison variable by variable of the values before and after the training