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Table 1 Baseline characteristics of the participants based on their bone marrow lesion status

From: Correlates of knee bone marrow lesions in younger adults

  No BML BML (Yes) P value
(n = 272) (n = 55)
Age (years) 35.2 (2.7) 36.0 (2.6) 0.053
Sex (male, %) 52 58 0.239
BMI (kg/m2) 25.7 (4.3) 25.6 (4.0) 0.864
Knee injury (%) 16 24 0.113
Total physical activity (min/week) 927.4 (1308.9) 932.6 (1354.1) 0.979
Total vigorous PA (min/week) 205.2 (446.6) 349.0 (987.9) 0.094
Total moderate PA (min/week) 277.3 (621.6) 122.7 (189.2) 0.001
Cartilage defects (%) 4.4 16.4 0.003
Total meniscal extrusion (%) 3.3 11.1 0.024
Total meniscal tear (%) 12 22 0.051
Total meniscal lesions (%) 13.6 27.3 0.013
WOMAC pain (yes, %) 34 45 0.084
WOMAC stiffness (yes, %) 31 41 0.075
WOMAC dysfunction (yes, %) 39 56 0.018
WOMAC pain (>5 vs ≤5, %) 11 22 0.032
HDL cholesterol (fasting, mmol/L) 1.45 (0.34) 1.34 (0.28) 0.019
LDL cholesterol (fasting, mmol/L) 2.90 (0.80) 2.87 (0.69) 0.727
Total cholesterol (fasting, mmol/L) 4.86 (0.93) 4.69 (0.74) 0.145
  1. Two-tailed t tests used for differences between means; χ2 test used for proportions (percentages)
  2. Mean (SD) except for percentages
  3. BML bone marrow lesion, BMI body mass index, PA physical activity, WOMAC Western Ontario and McMaster Universities osteoarthritis index, HDL high-density lipoprotein, LDL low-density lipoprotein