Table 1.
Characteristics of patients with regional SCC of the tonsil and oral cavity in the SEER 9 Registry, United States, 1988–2007.
| Patient Characteristics | Tonsil | p-value for difference* | Oral Cavity | p-value for difference* | ||
|---|---|---|---|---|---|---|
| 1988–1997 | 1998–2007 | 1988–1997 | 1998–2007 | |||
| Age | % (n) | % (n) | 0.0094 | % (n) | % (n) | 0.4640 |
| < 50 years | 28.9 (217) | 30.2 (833) | 12.4 (114) | 13.7 (269) | ||
| 50–64 years | 57.6 (433) | 61.5 (1,694) | 58.4 (538) | 53.9 (1,060) | ||
| > 65 years | 13.6 (102) | 8.3 (228) | 29.3 (270) | 32.5 (639) | ||
| Gender | <0.0001 | 0.2705 | ||||
| Male | 75.8 (570) | 82.7 (2,277) | 68.3 (630) | 66.3 (1,304) | ||
| Race | <0.0001 | 0.0309 | ||||
| White | 84.2 (633) | 90.7 (2,499) | 80.6 (743) | 82.8 (1,629) | ||
| Black | 11.0 (83) | 5.8 (161) | 14.5 (134) | 11.5 (226) | ||
| Asian/Pacific Islander | 4.4 (33) | 2.9 (79) | 3.6 (33) | 5.2 (103) | ||
| American Indian/Alaska Native | 0.4 (3) | 0.6 (16) | 1.3 (12) | 0.5 (10) | ||
| Postoperative RT | 0.0004 | 0.7140 | ||||
| Was not given | 26.6 (200) | 20.6 (565) | 28.9 (266) | 29.5 (580) | ||
| Given | 73.4 (552) | 79.4 (2,182) | 71.2 (656) | 70.5 (1,385) | ||
| Positive Nodes | 0.0090 | 0.9280 | ||||
| 1 node | 45.6 (343) | 51.7 (1,425) | 41.0 (378) | 41.8 (823) | ||
| 2–3 nodes | 29.9 (225) | 26.8 (738) | 34.1 (314) | 31.9 (627) | ||
| 4–8 nodes | 17.2 (129) | 15.1 (417) | 19.0 (175) | 20.6 (405) | ||
| > 8 nodes | 7.3 (55) | 6.4 (175) | 6.0 (55) | 5.7 (113) | ||
*
PROC TTEST was used in SAS to calculate the p-value using the Pooled method for equal variances between groups, and the Satterthwaite method for unequal variances.
RT = Radiation therapy.