Table 3.
Risk Factors for Accessory Nerve Injury.
| Patients With ANI (n = 82) | Patients Without ANI (n = 304) | Univariate | Multivariate | |
|---|---|---|---|---|
| Gender | ||||
| Female | 55 (67.07%) | 226 (74.34%) | ||
| Male | 27 (32.93%) | 78 (25.66%) | P = .189 | |
| Age (years) | ||||
| <55 | 23 (28.05%) | 116 (38.16%) | ||
| ≥55 | 59 (71.95%) | 188 (61.84%) | P = .091 | |
| BMI (kg/m2) | ||||
| <28.0 | 45 (54.9%) | 249 (81.91%) | ||
| ≥28.0 | 37 (45.1%) | 55 (18.09%) | P < .001 | P < .001 |
| Size (cm) | ||||
| <1 | 32 (39.02%) | 103 (33.88%) | ||
| ≥1 | 50 (60.98%) | 201 (66.12%) | P = .386 | |
| LND | ||||
| Bilateral | 21 (25.61%) | 52 (17.11%) | ||
| Unilateral | 61 (74.39%) | 252 (82.89%) | P = .081 | |
| aNeck circumference (cm) | ||||
| <34 | 48 (58.53%) | 227 (74.67%) | ||
| ≥34 | 34 (41.46%) | 77 (25.33%) | P = .004 | P < .001 |
| aNeck length (cm) | ||||
| <12 | 39 (47.56%) | 64 (21.05%) | ||
| ≥12 | 43 (52.44%) | 240 (78.95%) | P < .001 | P < .001 |
Abbreviations: ANI, accessory nerve injury; LND, lateral neck dissection.
aThirty-four and 12 are the mean neck circumference and neck length, respectively, for all 386 patients in this study.