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Distribution of ESCC and EA by anatomic location (1959–2007) and TNM staging (1980–2007)
| Total no. (%) | ESCC no. (%) | EA no. (%) | P values | |
|---|---|---|---|---|
| Cancer location (n = 601) | <0.001 | |||
| Lower third | 174 (28.9) | 144 (26.6) | 30 (61.2) | |
| Middle third | 202 (28.9) | 192 (34.4) | 10 (20.4) | |
| Upper third | 225 (37.3) | 216 (39.0) | 9 (18.4) | |
| Cancer stage (n = 152) | 0.05 | |||
| 0 | 2 (1.3) | 2 (1.5) | 0 (0) | |
| 1 | 4 (2.6) | 4 (2.9) | 0 (0) | |
| 2 | 51 (33.6) | 50 (36.8) | 1 (6.2) | |
| 3 | 44 (28.9) | 35 (25.7) | 9 (56.2) | |
| 4 | 51 (33.6) | 45 (33.1) | 6 (37.5) |
