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Table 5 Mediation of association between race and willingness to undergo total knee replacement (TKR)

From: Determinants of patient preferences for total knee replacement: African-Americans and whites

  Unadjusted Adjusteda Adjustedb
OR (95 % CI) OR (95 % CI) OR (95 % CI)
Primary predictor, race 0.41 (0.30, 0.57) 0.45 (0.29, 0.70) 0.43 (0.28, 0.67)
Potential mediators    
 Knowledge of TKRc 0.57 (0.39, 0.82) 0.55 (0.35, 0.88) 0.54 (0.34, 0.87)
 Expectations regarding TKR 0.44 (0.32, 0.62) 0.47 (0.30, 0.72) 0.44 (0.28, 0.70)
 TKR processd 0.41 (0.29, 0.57) 0.42 (0.26, 0.66) 0.39 (0.26, 0.62)
 Religiosity 0.41 (0.29, 0.57) 0.43 (0.27, 0.67) 0.42 (0.26, 0.66)
 Trust in physician 0.41 (0.30, 0.57) 0.44 (0.28, 0.67) 0.43 (0.27, 0.66)
 Trust in healthcare system 0.42 (0.30, 0.58) 0.45 (0.29, 0.69) 0.43 (0.27, 0.67)
Full modele 0.51 (0.34, 0.78) 0.45 (0.27, 0.74) 0.45 (0.27, 0.76)
  1. aAdjusted for recruitment site, sex, age, income and Western Ontario McMaster Index totalscore. bAdditionally adjusted for private/group insurance and social support. cKnowledge items selected for model inclusion: family/friend had hip or knee surgery, understands knee replacement, length of hospital stay, extent of pain after recovery, extent of difficulty walking after recovery. dTKR process items selected for model inclusion: doctor ever discussed surgery, referred to arthritis specialist, referred to surgeon. eFull model includes knowledge of TKR (family or friends who had hip or knee surgery, good understanding of knee replacement, hospital length of stay after TKR, residual pain after recovery, residual difficulty walking after recovery), expectations of TKR (quartiles), TKR process items (ever discussed TKR with a physician, referred to arthritis specialist, referred to surgeon), religiosity (quartiles), trust in physician (quartiles), trust in healthcare system (quartiles). OR odds ratio