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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