Table 5 Study population: annual distribution of hospitals with and without total knee arthroplasty (TKA), complying with minimum volume requirements, and case numbers
1055 hospitals of the study population (100%) | Hospitals < 50 TKA per year | Hospitals ≥ 50 TKA per year | |||||
|---|---|---|---|---|---|---|---|
Hospitals (%) with TKA | Cases treated in hospitals with TKA (100%) | Hospitals (%) without TKA | Hospitals (%) | Cases (%) | Hospitals (%) | Cases (%) | |
2006 | 888 (84.2%) | 120,700 | 167 (15.8%) | 129 (12.2%) | 3489 (2.9%) | 759 (71.9%) | 117,211 (97.1%) |
2008 | 926 (87.8%) | 141,714 | 129 (12.2%) | 96 (9.1%) | 2664 (1.9%) | 830 (78.7%) | 139,050 (98.1%) |
2010 | 956 (90.6%) | 140,866 | 99 (9.4%) | 103 (9.8%) | 2837 (2.0%) | 853 (80.9%) | 138,029 (98.0%) |
2012 | 987 (93.6%) | 127,404 | 68 (6.5%) | 206 (19.5%) | 5837 (4.6%) | 781 (74.0%) | 121,567 (95.2%) |
2013 | 1007 (95.5%) | 121,134 | 48 (4.6%) | 270 (25.6%) | 7643 (6.3%) | 737 (69.9%) | 113,491 (93.7%) |
2014 | 1017 (96.4%) | 124,544 | 38 (3.6%) | 262 (24.8%) | 7095 (5.7%) | 755 (71.6%) | 117,449 (94.3%) |