| | Knee pain | No knee pain | |
| | 1690 | 3696 | | | Age | 64.0 (54.0, 74.0) | 64.0 (53.0, 74.0) | 0.202 | | Gender (female), (%) | 962 (56.9%) | 1758 (47.6%) | < 0.001 | | Race, (%) | | | 0.383 | | Non-Hispanic white | 977 (57.8%) | 2150 (58.2%) | | | Non-Hispanic black | 320 (18.9%) | 643 (17.4%) | | | Mexican American | 296 (17.5%) | 658 (17.8%) | | | Others | 97 (5.7%) | 245 (6.6%) | | | Education, (%) | | | 0.029 | | Below high school | 591 (35.0%) | 1223 (33.1%) | | | High school | 424 (25.1%) | 855 (23.1%) | | | Above high school | 675 (39.9%) | 1618 (43.8%) | | | Hypertension (yes), (%) | 917 (54.3%) | 1648 (44.6%) | < 0.001 | | Diabetes (yes), (%) | 305 (18.0%) | 549 (14.9%) | 0.003 | | Pain elsewhere (yes), (%) | 1192 (70.5%) | 1247 (33.7%) | < 0.001 | | Moderate activity (yes), (%) | 683 (40.4%) | 1663 (45.0%) | 0.002 | | Vigorous activity (yes), (%) | 255 (15.1%) | 734 (19.9%) | < 0.001 | | Smoking (yes), (%) | 920 (54.4%) | 2014 (54.5%) | 0.994 | | Drinking (yes), (%) | 315 (18.6%) | 638 (17.3%) | 0.234 | | BMI (kg/m2) | 29.1 (25.8, 33.3) | 27.1 (24.1, 30.6) | < 0.001 | | Waist circumference (cm) | 102.5 (93.5, 111.8) | 98.2 (89.4, 107.3) | < 0.001 | | Albumin (g/L) | 42.0 (40.0, 44.0) | 42.0 (40.0, 44.0) | 0.002 | | Phosphorus (mg/dL) | 3.7 (3.4, 4.1) | 3.7 (3.4, 4.0) | 0.075 | | Total calcium (mg/dL) | 9.5 (9.2, 9.7) | 9.5 (9.2, 9.7) | 0.590 | | Triglycerides (mg/dL) | 128.0 (89.0, 184.8) | 123.0 (85.0, 179.0) | 0.018 | | Cholesterol (mg/dL) | 205.0 (179.0, 234.8) | 205.0 (180.0, 233.0) | 0.608 | | Vitamin D (nmol/L) | 55.7 (39.7, 70.6) | 58.1 (43.4, 72.9) | < 0.001 | | eGFR (ml/min/) | 77.9 (20.6) | 78.4 (20.6) | 0.410 |
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