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Table 1 Characteristics of study participants

From: Early cartilage abnormalities at the hip are associated with obesity and body composition measures – a 3.0T MRI community-based study

  Men (n = 62) Women (n = 79) P 1
Baseline measurements (1990 to 1994)    
Body mass index, kg m−2 27.2 (3.5) 25.1 (4.2) <0.01
Fat mass, kg 24.2 (7.7) 25.0 (8.9) 0.59
Body fat, % 28.8 (6.1) 37.3 (7.0) <0.001
Fat-free mass, kg 58.3 (5.0) 40.3 (3.6) <0.001
Follow-up measurements (2009 to 2010)    
Age, years 66.2 (6.8) 67.2 (7.8) 0.41
Body mass index, kg m−2 28.3 (4.1) 27.0 (5.3) 0.09
WOMAC median pain, out of 500 19 22 -
Femoral head cartilage volume, mm3 3891 (636) 2867 (451) <0.001
Femoral head bone area, mm2 1831 (179) 1429 (126) <0.001
Femoral head cartilage defects, n (%)    
 Central superolateral 22 (35.5) 23 (29.1) 0.422
 Central inferomedial 30 (48.4) 37 (46.8) 0.862
 Anterior 4 (6.3) 1 (1.3) 0.102
 Posterior 11 (17.5) 14 (17.7) 0.972
  1. Data presented as mean (standard deviation) or number (%) unless otherwise stated. 1 P-values represent difference between genders analysed by independent sample t-tests unless otherwise stated. 2Chi-squared test. WOMAC, Western Ontario and McMaster University osteoarthritis index.