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Table 1 Characteristics of hand osteoarthritis probands and families

From: Heritability patterns in hand osteoarthritis: the role of osteophytes

Proband sex (male:female) 13 (9.6%):123 (90.4%)
Average age of probands (years) 65.5 ± 8.51
Average age of siblings (years) 63.8 ± 9.10
Ethnic/racial breakdown of families  
   Caucasian 121 (89%)
   Asian 8 (5.9%)
   Hispanic 6 (4.4%)
   Other 1 (0.7%)
Average number of siblings/family 1.1 (1 to 3)
Average duration of hand osteoarthritis in probands 11.7 years
Average body mass index of probands 25.8 ± 4.54
Average body mass index of siblings 26.6 ± 5.30
  1. Data presented as number (percentage), mean ± standard deviation, or mean (range).