Psychometric properties of a test in evidence based practice: the Spanish version of the Fresno test

BMC Medical Education

Table 5 Item Analysis: Item Difficulty of the Spanish version of the Fresno test

Question	Pre-test N =	Post-test N =	Original version Novice	Original Version Expert
Q1 Formulate Question	0.29	0.33	0.27	0.80
Q2 Sources of information	0.20	0.21	0.61	0.75
Q3 Search	0.15	0.35	0.17	0.64
Q4 Study Design	0.38	0.51	0.44	0.80
Q5 Relevance	0.29	0.38	0.30	0.37
Q6 Internal validity	0.21	0.58	0.56	0.91
Q7 Magnitude of effect	0.10	0.20	0.12	0.58
Q8 Sensitivity	0.54	0.84	0.60	0.84
Specificity	0.44	0.77	0.33	0.76
Positive Predictive Value	0.44	0.79	0.40	0.71
Negative Predictive Value	0.39	0.78	0.35	0.66
Positive Likelihood Ratio	0.17	0.46	0.15	0.58
Q9 Absolute Risk Reduction	0.40	0.84	0.33	0.87
Relative Risk Reduction	0.24	0.66	0.10	0.76
Number Needed to Treat	0.25	0.62	0.30	0.87
Q10 Confidence Interval	0.29	0.56	0.26	0.86
Q11 Best Study Design, Diagnosis	0.21	0.78	0.10	0.39
Q12 Best Study Design, Prognosis	0.24	0.68	0.41	0.83

ISSN: 1472-6920