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Table 1 Baseline characteristics of participants split by presence of IPFP hypointense signal

From: Hypointense signals in the infrapatellar fat pad assessed by magnetic resonance imaging are associated with knee symptoms and structure in older adults: a cohort study

  IPFP hypointense signal IPFP hypointense signal p value
No (N = 305) YES (N = 569)
Age (year) 61.6 (6.9) 62.4 (7.5) 0.090
Female sex (%) 65.9 41.7 <0.001
Body mass index (kg/m2) 27.0 (4.5) 28.1 (4.7) <0.001
Medial tibial cartilage volume (ml) 2.2 (0.6) 2.4 (0.6) <0.001
Lateral tibial cartilage volume (ml) 2.6 (0.7) 2.8 (0.7) <0.001
Patella cartilage volume (ml) 3.2 (0.9) 3.2 (1.0) 0.235
Medial tibial bone area (cm2) 19.9 (2.9) 21.4 (3.0) <0.001
Lateral tibial bone area (cm2) 11.4 (1.9) 12.5 (2.2) <0.001
Medial joint space narrowing (%) 32.9 63.3 <0.001
Lateral joint space narrowing (%) 15.2 28.2 <0.001
MTF osteophytes (%) 1.8 10.0 <0.001
LTF osteophytes (%) 0.7 5.5 0.001
BML present (%) 29.2 40.1 0.001
MTF cartilage defects (%) 10.2 30.8 <0.001
LTF cartilage defects (%) 11.3 26.7 <0.001
Patellar cartilage defects (%) 29.4 44.3 <0.001
Knee pain (%) 46.2 51.4 0.144
  1. Two-tailed t tests were used for differences between means, and χ2 tests were used for proportions (percentages). Significant differences are shown in bold. Mean (SD) except for percentages
  2. IPFP infrapatellar fat pat, MTF medial tibiofemoral, LTF lateral tibiofemoral, BML bone marrow lesions