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Table 1 Detectable effect for each of the outcomes of interest

From: Shared decision making for stroke prevention in atrial fibrillation: study protocol for a randomized controlled trial

Outcome (n = 333) Rate (%) or SD Detectable effect Power*
Patient level – SDM quality
 Knowledge transfera 18 5.6 84%
 Knowledge of risk 55% 15% 81%
 Decisional conflict scalea 17 5.2 80%
Clinician level
 Satisfactiona 54% 15% 80%
Encounter level – SDM process
 Engagement (OPTION12)a 12.6 3.9 80%
  1. aValues from iADAPT shared decision making (SDM) tool trial (reference)
  2. *α = 0.05; two-sided