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Table 2 Preliminary effectiveness outcomes

From: Decision aid for patients considering total knee arthroplasty with preference report for surgeons: a pilot randomized controlled trial

  PtDA Usual education
Knowledge, mean n = 66 n = 66
71.2% 46.6%
High quality decision, n (%) n = 55 n = 56
31 (56.4) 14 (25.0)
Uptake of chosen option at one year, n (%) n = 69 n = 68
 TJA surgery 55 (79.7) 48 (70.6)
 No surgery 5 (7.2) 9 (13.2)
 Waiting list 8 (11.6) 10 (14.7)
 Died 1 (1.4) 1 (1.5)
Median total wait time from screening consultation to definitive decision n = 69 n = 71
33.4 weeks 33.0 weeks
SURE test scores* prior to surgeon consultation, n (%) n = 65 n = 66
 Feels SURE about best choice 47 (72.3) 53 (80.3)
 Knows the benefits and harm of each option 60 (92.3) 44 (66.7)
 Clear about which benefits and risks matter most 57 (87.7) 49 (74.2)
 Has enough support and advice to make choice 50 (76.9) 51 (77.3)
 TOTAL SURE score = 4 45 (69.2) 38 (57.6)
Preparation for decision making, mean (SD) n = 66 n = 64
 Help recognize decision to be made 4.121 (1.209) 3.781 (1.253)
 Help know decision depends on what matters most 4.477 (0.850) 4.141 (1.096)
 Help think about how involved you want to be in decision 4.477 (0.812) 4.250 (1.054)
 Prepare you to talk to your doctor about what matters most 4.364 (0.905) 4.234 (1.035)
  1. *Those not responding YES are experiencing decisional conflict.
  2. scored on a 5-point scale from 1 (not at all) to 5 (a great deal).
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