Table 5 The psychometric properties of the Evidence-Based Medicine Questionnaire
No. | Items | Test-Retest Reliability | ||||||
|---|---|---|---|---|---|---|---|---|
Corrected Item-total Correlation | Cronbach’s alpha if items is deleted | Test (n = 320) | Retest (n = 184) | ICC | ||||
Mean (SD) | Median | Mean (SD) | Median | |||||
Knowledge Domain | ||||||||
C2 | Bandolier (Published in Oxford) | 0.487 | 0.811 | 1.31 (0.650) | 1.00 | 1.68 (1.003) | 1.00 | 0.567 |
C5 | Database of abstracts of reviews of effectiveness(DARE) | 0.630 | 0.778 | 1.54 (0.916) | 1.00 | 1.67 (0.922) | 1.00 | 0.485 |
C6 | Centre of Evidence-Based Medicine (CEBM) | 0.630 | 0.777 | 1.44 (0.769) | 1.00 | 1.76 (0.937) | 1.00 | 0.453 |
C10 | ACP Journal Club | 0.570 | 0.791 | 1.62 (0.844) | 1.00 | 1.55 (0.886) | 1.00 | 0.333 |
C13 | InfoClinics | 0.566 | 0.791 | 1.58 (0.907) | 1.00 | 1.63 (0.913) | 1.00 | 0.418 |
C14 | Centre of Reviews & Dissertation (CRD) | 0.650 | 0.780 | 1.52 (0.863) | 1.00 | 1.48 (0.815) | 1.00 | 0.396 |
C3 | Evidence-based medicine (EBM) | 0.492 | – | 1.52 (0.863) | 3.00 | 3.21 (0.881) | 3.00 | 0.416 |
C12 | BMJ Clinical Evidence | 0.492 | – | 3.23 (0.868) | 3.00 | 2.90 (0.997) | 3.00 | 0.379 |
K1 | Systematic review | 0.774 | 0.866 | 4.19 (0.775) | 4.00 | 4.23(0.814) | 4.00 | 0.421 |
K2 | Meta-analysis | 0.718 | 0.887 | 2.79(0.516) | 3.00 | 4.10(0.793) | 4.00 | 0.463 |
K3 | Case-control study | 0.826 | 0.848 | 2.91(0.373) | 3.00 | 4.28(0.681) | 4.00 | 0.497 |
K4 | Randomized controlled trial | 0.777 | 0.866 | 2.93(0.346) | 3.00 | 4.37(0.686) | 4.00 | 0.522 |
K5 | Relative risk | 0.747 | 0.927 | 2.77(0.535) | 3.00 | 4.04(0.741) | 3.00 | 0.450 |
K6 | Absolute risk | 0.763 | 0.926 | 2.74(0.554) | 3.00 | 4.01(0.775) | 4.00 | 0.561 |
K7 | Odds ratio | 0.742 | 0.926 | 2.58(0.634) | 3.00 | 3.82(0.822) | 4.00 | 0.506 |
K8 | P-value | 0.713 | 0.927 | 2.67(0.616) | 3.00 | 4.00(0.803) | 4.00 | 0.487 |
K9 | Level of evidence | 0.721 | 0.927 | 2.75(0.538) | 3.00 | 4.06(0.846) | 4.00 | 0.359 |
K10 | Number needed to treat | 0.676 | 0.929 | 2.67(0.599) | 3.00 | 3.95(0.943) | 4.00 | 0.528 |
K11 | Confidence interval | 0.757 | 0.926 | 2.49(0.699) | 3.00 | 3.78(0.882) | 4.00 | 0.529 |
K12 | Heterogeneity | 0.663 | 0.930 | 2.39(0.713) | 3.00 | 3.54(0.950) | 4.00 | 0.483 |
K13 | Publication bias | 0.686 | 0.929 | 2.42(0.729) | 3.00 | 3.58(0.997) | 4.00 | 0.580 |
K14 | Test sensitivity and specificity | 0.697 | 0.928 | 2.79(0.512) | 3.00 | 4.24(0.734) | 4.00 | 0.504 |
K15 | Positive predictive value | 0.707 | 0.928 | 2.74(0.522) | 3.00 | 4.06(0.861) | 4.00 | 0.503 |
K16 | Clinical effectiveness | 0.667 | 0.929 | 2.63(0.630) | 3.00 | 2.89(0.938) | 4.00 | 0.570 |
Practice Domain | ||||||||
P1 | I support EBM | 0.417 | 0.875 | 2.94 (0.279) | 3.00 | 4.43 (0.648) | 4.00 | 0.605 |
P2 | I trust the findings from research studies | 0.618 | 0.854 | 4.02 (0.683) | 4.00 | 4.09 (0.611) | 4.00 | 0.323 |
P3 | Reading research papers is important to me | 0.684 | 0.846 | 4.06 (0.687) | 4.00 | 4.06 (0.679) | 4.00 | 0.477 |
P4 | EBM improves my patient care | 0.765 | 0.838 | 4.18 (0.642) | 4.00 | 4.27 (0.626) | 4.00 | 0.301 |
P5 | EBM reduces my workload | 0.499 | 0.877 | 3.44 (0.898) | 3.00 | 3.43 (0.830) | 3.00 | 0.532 |
P6 | I can implement EBM in my clinical practice | 0.682 | 0.846 | 4.04 (0.661) | 4.00 | 3.90 (0.743) | 4.00 | 0.532 |
P7 | EBM guides my clinical decision making | 0.748 | 0.841 | 4.18 (0.607) | 4.00 | 4.10 (0.600) | 4.00 | 0.344 |
P8 | I prefer to manage patients based on EBM | 0.699 | 0.844 | 4.01 (0.713) | 4.00 | 4.02 (0.689) | 4.00 | 0.422 |
Barrier Domain | ||||||||
B1 | I am able to assess the quality of research. | 0.472 | 0.747 | 2.31 (0.736) | 2.00 | 3.34 (0.808) | 3.00 | 0.475 |
B2 | I have access to internet to practice EBM | 0.386 | 0.767 | 2.81 (0.497) | 3.00 | 3.83 (0.874) | 4.00 | 0.388 |
B3 | I have time to read research papers | 0.546 | 0.728 | 3.32 (0.803) | 3.00 | 3.29 (0.795) | 3.00 | 0.494 |
B4 | I have time to practise EBM in my clinic | 0.583 | 0.718 | 3.55 (0.810) | 4.00 | 3.45 (0.774) | 4.00 | 0.356 |
B5 | My clinic facilities are adequate to support the practice of EBM | 0.583 | 0.718 | 3.13 (0.894) | 3.00 | 3.30 (2.367) | 3.00 | 0.142 |
B6 | Research articles are easily available to me | 0.547 | 0.731 | 3.16 (0.982) | 3.00 | 3.06 (0.942) | 3.00 | 0.275 |
B8 | My patients prefers me to practise EBM | 0.569 | – | 3.14 (0.798) | 3.00 | 3.24 (0.690) | 3.00 | 0.323 |
B9 | My patient believes in information that is based on evidence | 0.569 | – | 3.29 (0.853) | 3.00 | 3.41 (0.717) | 3.00 | 0.547 |
B12 | My colleagues support the practice of EBM | 0.618 | – | 3.53 (0.795) | 4.00 | 3.53 (0.752) | 4.00 | 0.620 |
B13 | My organization supports the practice of EBM | 0.618 | – | 3.63 (0.756) | 4.00 | 3.53 (0.771) | 4.00 | 0.471 |