Table 1

Characteristics of the study subjects

N (% female)Age, mean (±SD)BMI, mean (±SD)
IcelandEHOA918 (79)75.0 (11.2)27.3 (4.9)
Controls109 249 (46)66.5 (14.0)26.8 (5.3)
UK BiobankEHOA63 (79)61.3 (6.6)28.6 (6.4)
Controls430 875 (54)57.4 (8.0)27.4 (4.8)
USAEHOA145 (82)68.9 (12.1)27.5 (6.1)
Controls5308 (60)56.3 (18.2)29.6 (6.9)
SpainEHOA218 (84)61.1 (8.7)28.1 (5.3)
Controls164 (32)58.9 (12.6)27.5 (4.6)
The NetherlandsEHOA139 (82)64.3 (8.4)27.5 (4.7)
Controls5102 (53)54.9 (18.2)25.2 (4.0)
  • BMI, body mass index; EHOA, erosive hand osteoarthritis.