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Microsurgery Surgical Site Infection and Related Reoperation Rates Stratified by Operative Time.
| Complication | Operative Time, hours | Number of Cases, n | Proportion of Cases, % | Occurrence Rate, % | P Value |
|---|---|---|---|---|---|
| Surgical site infection | <6 | 1433 | 23.80 | 4.33 | |
| 6-8 | 1677 | 27.85 | 4.11 | .796 | |
| 8-10 | 1521 | 25.26 | 5.98 | .049a | |
| >10 | 1389 | 23.07 | 7.99 | 2e10−10b | |
| Related reoperation | <6 | 1433 | 23.80 | 9.56 | |
| 6-8 | 1677 | 27.85 | 11.63 | .083 | |
| 8-10 | 1521 | 25.26 | 12.23 | .029a | |
| >10 | 1389 | 23.07 | 17.64 | 1e10−10b |
a P < .05.
b P < .001.
