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Table 1 Characteristics of study population by country of birth

From: Reduced rates of primary joint replacement for osteoarthritis in Italian and Greek migrants to Australia: the Melbourne Collaborative Cohort Study

  Italy-born
n = 5,083
Greece-born
n = 4,304
Australia-born
n = 26,789
UK-born
n = 2,847
Age when entering MCCS, years 56.2 ± 7.9 55.0 ± 7.6 54.7 ± 8.9 54.7 ± 8.5
Age when entering JR cohort, years 64.8 ± 8.1 63.5 ± 7.7 62.3 ± 9.1 61.6 ± 8.5
Womena 2,888 (56.8) 2,381 (55.3) 16,518 (61.7) 1,539 (54.1)
Body mass index, kg/m2 28.9 ± 4.3 28.9 ± 4.1 26.2 ± 4.3 26.4 ± 4.0
Educationa     
   Primary and some secondary 4,218 (84.8) 3,575 (85.4) 13,174 (49.2) 1,144 (40.3)
   Completed secondary and degree/diploma 756 (15.2) 609 (14.6) 13,604 (50.8) 1,694 (59.7)
Self description of health statusa     
   Poor/Fair     
   Good/Very good/Excellent 1,211 (33.1)
2,444 (66.9)
837 (27.4)
2,214 (72.6)
2,960 (12.4)
20,929 (87.6)
333 (13.4)
2,151 (86.6)
Physical function limitationa     
   None (score = 5) 1,137 (31.8) 1,221 (41.0) 6,997 (29.9) 748 (30.8)
   Mild (score 6–10) 1,659 (46.3) 1,073 (36.0) 11,825 (50.5) 1,221 (50.2)
   Moderate (score 11–15) 551 (15.4) 416 (14.0) 2,963 (12.7) 303 (12.5)
   Severe (score 16–25) 232 (6.5) 268 (9.0) 1,610 (6.9) 159 (6.5)
Any primary JRa 84 (1.7) 40 (0.9) 812 (3.0) 73 (2.6)
JR in private hospitalsa 42 (0.8) 10 (0.2) 658 (2.4) 50 (1.8)
JR in public hospitalsa 42 (0.8) 30 (0.7) 154 (0.6) 23 (0.8)
Primary hip JRa 39 (0.8) 14 (0.3) 383 (1.4) 32 (1.1)
Primary knee JRa 45 (0.9) 26 (0.6) 429 (1.6) 41 (1.4)
  1. Values are reported as mean ± standard deviation or as anumber (percentage). JR, joint replacement; MCCS, Melbourne Collaborative Cohort Study.