Table 2.
Relationship of Head and Neck Primary Tumor Site With SEER Variables
| Covariate | Statistics | Level | Oropharynx N=12,829 | Nasopharynx N=1650 | Hypopharynx N=1854 | Larynx N=3678 | Parametric Pa |
|---|---|---|---|---|---|---|---|
| Sex | No. (row %) | Female | 2108 (55.49) | 460 (12.11) | 332 (8.74) | 899 (23.66) | <.001 |
| No. (row %) | Male | 10,721 (66.13) | 1190 (7.34) | 1522 (9.39) | 2779 (17.14) | ||
| Race | No. (row %) | Asian | 382 (29.23) | 682 (52.18) | 116 (8.88) | 127 (9.72) | <.001 |
| No. (row %) | Black | 1240 (50.45) | 210 (8.54) | 319 (12.98) | 689 (28.03) | ||
| No. (row %) | Hispanic | 758 (58.81) | 141 (10.94) | 129 (10.01) | 261 (20.25) | ||
| No. (row %) | White | 10,449 (69.86) | 617 (4.13) | 1290 (8.62) | 2601 (17.39) | ||
| Level 1 lymph nodes | No. (row %) | Not involved | 9680 (63.29) | 1240 (8.11) | 1471 (9.62) | 2903 (18.98) | <.001 |
| No. (row %) | Involved | 3149 (66.76) | 410 (8.69) | 383 (8.12) | 775 (16.43) | ||
| Level 2 lymph nodes | No. (row %) | Not involved | 3230 (57.56) | 510 (9.09) | 650 (11.58) | 1222 (21.77) | <.001 |
| No. (row %) | Involved | 9599 (66.66) | 1140 (7.92) | 1204 (8.36) | 2456 (17.06) | ||
| Level 3 lymph nodes | No. (row %) | Not involved | 8534 (67.08) | 1107 (8.7) | 1021 (8.02) | 2061 (16.2) | <.001 |
| No. (row %) | Involved | 4295 (58.93) | 543 (7.45) | 833 (11.43) | 1617 (22.19) | ||
| Level 4 lymph nodes | No. (row %) | Not involved | 10,934 (65.92) | 1309 (7.89) | 1436 (8.66) | 2908 (17.53) | <.001 |
| No. (row %) | Involved | 1895 (55.34) | 341 (9.96) | 418 (12.21) | 770 (22.49) | ||
| Level 5 lymph nodes | No. (row %) | Not involved | 11,396 (66.22) | 1112 (6.46) | 1539 (8.94) | 3163 (18.38) | <.001 |
| No. (row %) | Involved | 1433 (51.16) | 538 (19.21) | 315 (11.25) | 515 (18.39) | ||
| Retropharyngeal lymph nodes | No. (row %) | Not involved | 12,586 (64.69) | 1475 (7.58) | 1784 (9.17) | 3611 (18.56) | <.001 |
| No. (row %) | Involved | 243 (43.78) | 175 (31.53) | 70 (12.61) | 67 (12.07) | ||
| Age, y | No. | 12,829 | 1650 | 1854 | 3678 | <.001 | |
| Mean | 59.1 | 52.23 | 63.29 | 61.52 | |||
| Median | 58 | 53 | 62 | 61 |
Abbreviation: SEER, Surveillance, Epidemiology, and End Results.
a
The parametric P value was calculated using the analysis of variance for numerical covariates and the chi-square test for categorical covariates.
Bold values indicate statistical significance less than 0.05.