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Table 5 Differences over time in proportions answering knowledge questions correctly (n, %), Friedman's Test

From: Providing education on evidence-based practice improved knowledge but did not change behaviour: a before and after study

Questions
(abbreviated)
Time 1 Pre
(n = 114)
Time 2 Post
(n = 106)
% change Time 3
Follow-up
(n = 51)
% change DF     χ 2     p    
Q1. A good clinical question consists of an intervention, target population, outcome, and comparison intervention (Agree)         
   Correct 53 (46.9)* 105 (99.1) +55 48 (94.1) +5 2 44.9 0.0001**
   Incorrect 60 (53.1)* 1 (0.9)   3 (5.9)     
Q2. Databases of primary medical literature, such as Medline/Pubmed generally contain a compilation of only high quality evidence (Disagree)         
   Correct 8 (7.0) 42 (39.6) +7 35 (70.0) 2 +30 2 21.8 0.0001**
   Incorrect 106 (93.0) 64 (60.4)   15 (30.0)2     
Q3. An electronic database such as PubMed can only be accessed from hospital and university libraries (Disagree)         
   Correct 26 (22.8) 102 (96.2) +73 47 (92.2) -4 2 68.7 0.0001**
   Incorrect 88 (77.2) 4 (3.8)   4 (7.8)     
Q4. The Cochrane Database is a good place to look for reviews of high quality research based on clearly stated criteria, in many areas of clinical practice (Agree)         
   Correct 46 (40.4) 98 (92.5) +53 45 (88.2) -5 2 40.5 0.0001**
   Incorrect 68 (59.6) 8 (7.5)   6 (11.8)     
Q5. Confidence intervals are a measure of clinical significance, and provide a way of estimating where the 'true' result for any population lies (Agree)         
   Correct 20 (17.5) 92 (86.8) +69 41 (80.4) -7 2 63.5 0.0001**
   Incorrect 94 (82.5) 14 (13.2)   10 (19.6)     
Q6. The p-value is a measure of reliability (Disagree)         
   Correct 10 (8.8) 1 61 (57.5) +49 20 (40.0) -18 2 33.3 0.0001**
   Incorrect 103 (91.2)1 45 (42.5)   30 (60.0)     
Q7. Single case designs are regarded as a similar level of evidence to randomised controlled trials (Disagree)         
   Correct 72 (63.7) 1 101 (95.3) +31 50 (98.0) +3 2 22.5 0.0001**
   Incorrect 41 (36.3)1 5 (4.7)   1 (2.0)     
  1. Note: Responses recoded from 'Agree/Disagree/Unsure' to 'Correct/Incorrect'. 1n = 113. 2n = 50. **Significant at 0.05