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. Author manuscript; available in PMC: 2017 Jul 1.
Published in final edited form as: Arthritis Care Res (Hoboken). 2016 Jul;68(7):965–973. doi: 10.1002/acr.22771

Table 3.

Independent predictors* of incident TKA Stratified by Age at End of Follow-up. Part A: all sample; Part B: Restricted to knees at baseline KL 3 or 4

ALL SAMPLE <65 65+
RR 95% CI p-value RR 95% CI p-value
Race: non-White vs. White 0.32 0.15 , 0.70 0.004 0.43 0.26 , 0.71 <.001
Sex: Male vs. Female 0.32 0.17 , 0.60 <.001 0.79 0.57 , 1.1 0.155
Education: Some college or
more vs. high school or less
0.52 0.27 , 1.0 0.052 1.04 0.68 , 1.6 0.866
KL 3–4 only <65 65+
RR 95% CI p-value RR 95% CI p-value
Race: non-White vs. White 0.33 0.13 , 0.79 0.014 0.46 0.26 , 0.79 0.005
Sex: Male vs. Female 0.28 0.14 , 0.55 <.001 0.75 0.53 , 1.1 0.108
Education: Some college or
more vs. high school or less
0.48 0.24 , 0.96 0.038 1.07 0.66 , 1.7 0.792
*

Results from multivariate Poisson regression, adjusted for baseline KL grade, baseline WOMAC Pain, baseline BMI, and baseline number of comorbidities

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