Table 2.
Characteristics | n† | Mean ± standard deviation or frequency (%) |
Age (years) | 4625 | 62 ± 11 |
Male | 4626 | 3562 (77) |
Race | 3587 | |
White | 2339 (65) | |
Asian | 1168 (33) | |
Other | 80 (2) | |
East (part of world) | 4627 | 1168 (25) |
Location (location of cancer) | 4344 | |
Upper third (1) | 177 (4) | |
Middle third (2) | 1172 (27) | |
Lower third (3) | 2995 (69) | |
Length (cancer length cm) | 2229 | 3.3 ± 2.5 |
T | 4609 | |
is (0) | 335 (7) | |
1‡ | 1040 (23) | |
2 | 755 (16) | |
3 | 2329 (51) | |
4 | 150 (3) | |
N | 4616 | |
0 | 2584 (56) | |
1 | 2032 (44) | |
M | 4564 | |
0 | 4208 (92) | |
1§ | 356 (8) | |
G (histologic grade) | 3816 | |
G1 (1) | 1228 (32) | |
G2 (2) | 1257 (33) | |
G3 (3) | 1324 (35) | |
G4 (4) | 7 (0) | |
Cell (histopathologic cell type) | 4595 | |
Squamous cell carcinoma (0) | 1841 (40) | |
Adenocarcinoma (1) | 2754 (60) | |
Nodes sampled (number of nodes sampled) | 3921 | 16.8 ± 16.1 |
Nodes (number of cancer-positive lymph nodes) | 4507 | |
0 | 2584 (57) | |
1 | 547 (12) | |
> 1 | 1376 (31) | |
R (resection margins) | 4123 | |
R0¶ (0) | 3572 (87) | |
R1‖ (1) | 434 (11) | |
R2# (2) | 117 (3) |
Nonmissing cases.
T1a and T1b.
M1a and M1b.
R0 = cancer free.
R1 = microscopic.
R2 = macroscopic