1. Natural history of pain and disability among African–Americans and Whites with or at risk for knee osteoarthritis: A longitudinal study 
E.R. Vina, D. Ran, E.L. Ashbeck, C.K. Kwoh 
Osteoarthritis and Cartilage 
Volume 26, Issue 4, Pages (April 2018)
DOI: /j.joca
Copyright © 2018 Osteoarthritis Research Society International Terms and Conditions

2. Fig. 1
Means (with 95% CI) plot of KOA-related measures by race estimated with mixed effects models, adjusted for age, sex, education, marital status, BMI, CES-D, and baseline K–L grade. A. WOMAC Pain; B. Knee Pain Severity; C. WOMAC Disability.
Osteoarthritis and Cartilage  , DOI: ( /j.joca )
Copyright © 2018 Osteoarthritis Research Society International Terms and Conditions

3. Fig. 2
Means (with 95% CI) plot of KOA-related measures by race estimated with mixed effects models, stratified by radiographic KOA at baseline. A. WOMAC Pain, K–L<2; B. A. WOMAC Pain, K–L≥2; C. Knee Pain Severity, K–L<2; D. Knee Pain Severity, K–L≥2; E. WOMAC Disability, K–L<2; F. WOMAC Disability, K–L≥2.
Osteoarthritis and Cartilage  , DOI: ( /j.joca )
Copyright © 2018 Osteoarthritis Research Society International Terms and Conditions

4. Fig. 3
WOMAC pain means (with 95% CI) plot over 108 months estimated with mixed effects models, adjusted for age, sex, education, marital status, BMI, CES-D, and baseline K–L grade, stratified by: A. Income; B. Marital status; C. CES-D score (<16: without depression, ≥16: with depression); D. BMI category; E. K–L grade.
Osteoarthritis and Cartilage  , DOI: ( /j.joca )
Copyright © 2018 Osteoarthritis Research Society International Terms and Conditions