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. Author manuscript; available in PMC: 2019 Jan 1.
Published in final edited form as: J Clin Rheumatol. 2018 Jan;24(1):1–5. doi: 10.1097/RHU.0000000000000613

Table 3.

Adjusted Risk of Undergoing Total Knee Replacement among Black versus White Participants, Cox Regression Analyses

Black Participants White Participants
TKR, n (%) 30 (10.5) 150 (19.1)
Model 1 Hazard ratio (95% CI) 0.60 (0.40, 0.90) Ref.
Model 2 Hazard ratio (95% CI) 0.49 (0.32, 0.75) Ref.
Model 3 Hazard ratio (95% CI) 0.53 (0.34, 0.83) Ref.
Model 4 Hazard ratio (95% CI) 0.51 (0.32, 0.81) Ref.

CI; confidence interval

Model 1: age, sex

Model 2: age, sex, baseline TKR, WOMAC pain and function (25 participants missing)

Model 3: age, sex, baseline TKR, WOMAC pain and function, education, income, geographic region (30 participants missing)

Model 4: age, sex, baseline TKR, WOMAC pain and function, education, income, geographic region, body mass index, depression, diabetes, hypertension, smoking, Tylenol, non steroidal anti-inflammatory, stronger pain medication, physical activity (missing for 112 participants)