Skip to main content

Table 1 Patient and procedure characteristics of 14,496 cemented medial Oxford III unicompartmental knee arthroplasty according to four hospital volume categories with the diagnosis osteoarthritis from 2000 to 2012

From: Hospital volume and the risk of revision in Oxford unicompartmental knee arthroplasty in the Nordic countries -an observational study of 14,496 cases

 

Annual hospital volume groups

 
 

≤11

12-23

24-43

≥44

 
 

p-values

No of procedures

3528

3759

3533

3676

 

Men %

42

43

44

44

0.17

Agemedian (range)

62 (28-94)

63 (34-93)

65 (33-94)

65 (33-95)

 

Age group n (%)

     

<55

731 (21)

652 (17)

501 (14)

540 (15)

<0.001

55-64

1471 (42)

1469 (39)

1199 (34)

1339 (36)

 

65-74

946 (27)

1169 (31)

1251 (35)

1240 (34)

 

≥75

380 (11)

469 (13)

582 (17)

566 (15)

 

Year of surgery

     

2000-03

962 (27)

826 (22)

399 (11)

475 (13)

<0.001

2004-06

928 (26)

1061 (28)

562 (16)

1113 (30)

 

2007-09

925 (26)

1281 (32)

1349 (38)

900 (25)

 

2010-12

713 (20)

654 (18)

1223 (35)

1188 (32)

 

Nation n (%)

     

Denmark (4211)

558 (16)

615 (16)

1118 (32)

1920 (52)

<0.001

Norway (4157)

1273 (36)

1551 (41)

1147 (33)

186 (5)

 

Sweden (2218)

460 (13)

561 (15)

508 (14)

689 (19)

 

Finland (3920)

1237 (35)

1032 (28)

760 (21)

881 (24)