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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