Figure 1From: Associations of educational attainment, occupation and community poverty with knee osteoarthritis in the Johnston County (North Carolina) osteoarthritis projectParticipant flow chart. 1Sample excludes those without radiographic data for at least one knee (as used in Table 1 and modeling); 2sample excludes those without radiographic data for both knees (as used in Table 1); 3sample excludes those without radiographic and pain data for at least one knee (as used in Table 1 and modeling); 4sample excludes those without radiographic and pain data for both knees (as used in Table 1); 5sample excludes those with unilateral knee OA (as used in modeling); 6sample excludes those with unilateral symptomatic knee OA (as used in modeling)Back to article page