Table 5. Multivariable Model With Risk Classification System.
| Variable | Odds Ratio (95% CI) | ||
|---|---|---|---|
| 30-d Severe Complicationa | 90-d Mortalityb | 90-d Functional Declinec,d | |
| Risk classification system | |||
| Class I | 1 [Reference] | 1 [Reference] | 1 [Reference] |
| Class II | 1.87 (1.28-2.72) | 3.39 (1.22-9.42) | NA |
| Class III | 4.50 (2.44-8.28) | 6.67 (1.40-31.85) | 2.49 (1.11-5.57) |
| Additional operations | |||
| No | 1 [Reference] | 1 [Reference] | 1 [Reference] |
| Yes | 5.04 (2.59-9.84) | NA | 3.24 (1.79-5.86) |
| Duration of surgery | 1.08 (1.00-1.16) | NA | NA |
| Flap failure | NA | 3.63 (1.48-8.89) | NA |
| Tumor site | |||
| Scalp, facial skin, or parotid | NA | NA | 1 [Reference] |
| Maxilla, oral cavity, or oropharynx | NA | NA | 3.07 (1.51-6.25) |
| Larynx, hypopharynx, or esophagus | NA | NA | NA |
Abbreviation: NA, not applicable.
a
Additional variables tested in multivariable model include ablation site, American Society of Anesthesiologists (ASA) classification, flap failure, and flap type.
b
Additional variables tested in multivariable model include additional operations, ASA classification, and flap type.
c
Additional variables tested in multivariable model include additional operations, ASA classification, flap failure, flap type, prior head and neck radiotherapy, and duration of surgery.
d
Includes 328 patients who were not dependent at baseline and were alive at 90 days.