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Table 2 CWC knowledge

From: A survey of primary care patients’ readiness to engage in the de-adoption practices recommended by Choosing Wisely Canada

CWC Topic Pre-endorsement of correct answer (%) Post-endorsement of correct answer (%) Proportion with knowledge improvement (95 % CI) P value for change to the correct answer
ECG educational brochure (n = 105)  
Routine ECGs are the best way to detect heart disease 15.2 41.9 30.5 (22.5–39.8) <0.001
You should have an ECG done if you have diabetes 36.2 57.1 25.7 (18.3–34.8) <0.001
Either question    47.6 (38.3–57.1)  
Antipsychotics educational brochure (n = 97)
Antipsychotic medication is the best available option to treat disruptive behaviour in people with dementia 27.8 83.5 57.7 (47.8–67.1) <0.001
Health Canada has not approved the use of antipsychotic medications to treat disruptive behaviour in people with dementia 9.3 59.8 51.5 (41.7–61.2) <0.001
Either question    74.2 (64.7–81.9)  
Sinusitis educational brochure (n = 50)  
One in four people who take antibiotics have side effects 58.0 86.0 34 (22.4–47.8) 0.002
Antibiotics are not necessary to treat sinus infections 44.0 84.0 46 (33–59.6) <0.001
Either question    66 (52.2–77.6)  
Back pain educational brochure (n = 52)
An imaging test taken within the first week of having lower back pain can help you heal faster 26.9 71.2 44.2 (31.6–57.7) <0.001
Imaging tests for lower back pain have no risks 50.0 80.8 36.5 (24.8–50.1) 0.001
Either question    59.6 (46.1–71.8)  
Sleeping pills educational brochure (n = 40)
Sleeping pills are mild tranquilizers that are safe when taken for long periods of time 45.0 72.5 35 (22.1–50.5) 0.008
Sleeping pills cause no side effects 62.5 85.0 27.5 (16.1–42.8) 0.013
Either question    40 (26.3–55.4)