Fig. 3

Outcome Scores by current Socioeconomic Status Categories

Outcome scores by A ) Current Estimated Income Quintile, B ) Education Level & C ) Occupation Type. Spearman analysis for trend was conducted for A and B. Kruskall-Wallis testing was conducted for C, with post-hoc Dunn tests with Bonferroni correction. WOMAC: Western Ontario and MacMaster Universities Osteoarthritis Index; AMICAL: Osteoarthritis of Knee and Hip and Quality of Life; HAQ-DI: Stanford Health Assessment Questionnaire Disability Index. For education level, LE: less than elementary (<6 yr), E: elementary (6 years), M: Middle-school (9 years), H: High-school (12 years), C: College-level or higher (>12 years). For occupation type, H: Home, ML: Manual Labor, NMO: Non-managerial office work, MO: Managerial office work. *Significant at the p<0.05 level; ** Significant at the p<0.01 level