Table 2.
Main features of the studies
| Studies | Type of study | Enrollment time period | No. of participants with T2DM assigned to PCI (n) | No. of participants with T2DM assigned to CABG (n) | Bias risk |
|---|---|---|---|---|---|
| Benedetto 2014 | OC-retrospective | 2001–2013 | 45 | 58 | B |
| Goy 2008 | RCT | 1994–1998 | 7 | 8 | B |
| Lee 2020 | OC | 2000–2006 | 327 | 395 | B |
| Li 2017 | OC | 2006–2016 | 1501 | 517 | B |
| Merkle 2014 | OC-retrospective | 2006–2012 | 17 | 31 | B |
| Park 2010 | OC-retrospective | 2003–2004 | 21 | 82 | B |
| Park 2020 | RCT | 2004–2009 | 102 | 90 | B |
| Thuijs 2019 | RCT | 2005–2007 | 320 | 314 | B |
| Total no of patients (n) | 2340 | 1495 |
T2DM type 2 diabetes mellitus, PCI percutaneous coronary intervention, CABG coronary artery bypass grafting, OC observational cohort, RCT randomized controlled trials