Table 9 Comparison of quality indicators between hospitals with a caseload ≥50 vs. < 50 of total knee arthroplasty (TKA) per year
2010 | 2012 | 2013 | 2014 | ||||||
|---|---|---|---|---|---|---|---|---|---|
TKA Quality Indicator | Hospital case load | Hospital n | Mean rank | Hospital n | Mean rank | Hospital n | Mean rank | Hospital n | Mean rank |
TKA meeting indication criteria | < 50 cases | 94 | 542.3 | 195 | 549.6 | 251 | 516.8 | 241 | 539.1 |
≥50 cases | 823 | 449.5 | 762 | 460.9 | 723 | 477.3 | 749 | 481.5 | |
p | 0.001 | < 0.001 | 0.052 | 0.005 | |||||
Perioperative antibiotic-prophylaxis applied | < 50 cases | 198 | 548.2 | 251 | 557.0 | 244 | 560.0 | ||
≥50 cases | 764 | 464.2 | 724 | 464.1 | 751 | 477.9 | |||
p | < 0.001 | < 0.001 | < 0.001 | ||||||
Postoperative mobility (neutral zero method) measured | < 50 cases | 92 | 516.6 | 194 | 570.2 | 251 | 587.8 | 240 | 545.1 |
≥50 cases | 823 | 451.5 | 763 | 455.8 | 723 | 452.7 | 750 | 479.6 | |
p | 0.016 | < 0.001 | < 0.001 | 0.001 | |||||
Postoperative mobility of at least 0/0/90 (neutral zero method) | < 50 cases | 91 | 435.7 | 194 | 493.6 | 245 | 483.1 | 233 | 504.2 |
≥50 cases | 820 | 458.3 | 761 | 474.0 | 724 | 485.7 | 749 | 487.6 | |
p | 0.438 | 0.377 | 0.899 | 0.434 | |||||