Table 1.
Patient characteristics.
| Characteristic | Vein graft (%) | No vein graft (%) | p-Value |
|---|---|---|---|
| Nº of flaps | 26 | 730 | |
| Demographics | |||
| Mean age (years) | 50.2 ± 8.7 | 54.1 ± 9.8 | 0.064a |
| Male sex | 23 (88.5) | 687 (94.1) | 0.206b |
| Smoking | 21 (80.8) | 607 (83.2) | 0.789b |
| Betel nut | 19 (73.1) | 559 (76.6) | 0.859c |
| Alcohol use | 19 (73.1) | 499 (68.4) | 0.768c |
| HTN | 7 (26.9) | 204 (27.9) | 1.000c |
| DM | 4 (15.4) | 112 (15.3) | 1.000b |
| Liver cirrhosis | 0 (0) | 13 (1.8) | 1.000b |
| Renal failure | 0 (0) | 4 (0.5) | 1.000b |
| Risk factors | |||
| Prior radiation therapy | 22 (84.6) | 297 (40.7) | <0.001c |
| Prior chemotherapy | 21 (80.8) | 292 (40.0) | <0.001c |
| Prior neck dissection | 22 (84.6) | 329 (45.1) | <0.001c |
| Prior free flap reconstruction | 21 (80.8) | 254 (34.8) | <0.001c |
DM, diabetes mellitus; HTN, hypertension.
a
Mann–Whitney U test.
b
Fisher’s exact test.
c
Chi-squared test.