Test data source and data extraction (30-day readmission rate)
| Studies | Year | Country | Language | Surgical site | Total number of cases | 30-day readmission rate | ||||
| ERAS | Non-ERAS | ERAS | N% | Non-ERAS | N% | |||||
| Auyong DB5 | 2015 | United States | English | TKA | 126 | 126 | 3 | 2.38% | 7 | 5.56% |
| Christelis N6 | 2015 | Australia | English | THA\TKA | 297 | 412 | 10 | 3.37% | 14 | 3.4% |
| Malviya A9 | 2011 | England | English | THA\TKA | 1500 | 3000 | 70 | 4.67% | 144 | 4.8% |
| Stambough JB12 | 2015 | United States | English | THA | 488 | 281 | 7 | 1.43% | 11 | 3.91% |
| Stowers MD13 | 2016 | New Zealand | English | THA\TKA | 100 | 100 | 8 | 8% | 14 | 14% |
ERAS, enhanced recovery after surgery; THA, total hip arthroplasty; TKA, total knee arthroplasty.