Factor structure and short version of the modified Fresno test to assess the use of the evidence-based practice in physiotherapists

Table 3 Principal axis factoring analysis factor loading and communalities (h²) of the 13 Adapted Fresno test items following varimax rotation

Step/Action	Question - Q	Factor 1	Factor 2	Factor 3	Communalities (h²)
Step 1: Elaboration of the matter	Q1 - Formulate a clinical question		.73		.57
Step 2: Search the best available evidence	Q2 - Information Sources		.71		.52
Step 2: Search the best available evidence	Q4 - Search (search strategy)		.62		.57
Step 3a: Critical evaluation (qualitative) evidence	Q3 - Study design	.66			.59
	Q5 - Relevance	.52			.54
	Q6 - Internal Validity	.71			.54
	Q7 - Magnitude and significance	.60			.55
	Q12 - Best study design (diagnosis)	.83			.69
	Q13 - Best study design (prognosis)	.88			.77
Step 3b: Critical evaluation (quantitative) evidence	Q9 - Sensitivity. positive predictive value and positive likelihood			.90	.83
	Q10 - Absolute risk reduction. Relative risk. NNT. and p-value			.91	.84
	Q11 - Confidence Interval			.51	.42
Step 4: Implementation of evidence in clinical practice	Q8 - Questioning the patient / family		.69		.49

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