Table I.
Characteristics of the included studies.
| Author, year | Age, PEO/nPEO, mean ± SD, years | Sample size, PEO/nPEO, n | Sex ratio, PEO/nPEO, female: Male | Mean follow-up time, PEO/nPEO, months | Country | Outcome, nPEO vs. PEO | (Refs.) |
|---|---|---|---|---|---|---|---|
| Bodewes et al, 2017 | 67.6±11/68.8±12 | 2,031/3,102 | 801:1,230/1,148:1,954 | 1/1 | USA | Reduced amputation and complication rate, and higher mortality | (37) |
| Uhl et al, 2015 | 78.5/77 | 40/93 | NA/NA | 1/1 | Germany | Lower mortality and amputation rate, no difference in complication rate | (24) |
| Santo et al, 2014 | 66.9±12.7/67.2±12.5 | 61/253 | 27:34/90:163 | 1/1 | USA | Reduced complication rate, and higher mortality and amputation rate | (39) |
| Jones et al, 2013 | NA/NA | 1,154/2,350 | 386:768/714:1,636 | 12/12 | USA | Reduced mortality and amputation rate | (38) |
| Nolan et al, 2011 | 68.25/70 | 797/1,277 | 283:514/409:868 | 12/12 | USA | Reduced mortality and amputation rate | (23) |
| Böckler et al, 2005 | 65/72 | 18/63 | NA/NA | 8/20 | Germany | Reduced amputation and complication rate, no difference in mortality rate | (22) |
PEO, previous endovascular operation; nPEO, no previous endovascular operation; NA, not available.