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Table 3 Effects of the de-implementation strategy, measurement, and covariates on the outcome “use of blood salvage”

From: The effectiveness of a de-implementation strategy to reduce low-value blood management techniques in primary hip and knee arthroplasty: a pragmatic cluster-randomized controlled trial

  OR 95% CI p value
Intervention group, relative to control group 1.7 0.3 to 11.4 0.57
Time effect, effect measurement relative baseline 0.1 0.02 to 0.3 <0.001
Joint, knee relative to hip 4.6 3.7 to 5.7 <0.001
Sex, female relative to male 0.8 0.6 to 1.0 0.042
ASA classification, relative to 1
• ASA 2 1.1 0.8 to 1.4 0.62
• ASA 3–4 0.8 0.5 to 1.2 0.23
BMI 1.0 1.0 to 1.0 0.27
Preoperative Hb 1.0 0.9 to 1.1 0.30
Age 1.0 1.0 to 1.0 0.58