AJCC TNM staging system | After incorporation of C-stage into AJCC stage | ||||||
---|---|---|---|---|---|---|---|
Stage | No. of patients | Disease-free survival | Stage | No. of patients | Disease-free survival | ||
HR (95% CI) | P value | HR (95% CI) | P value | ||||
I | 141 | 1 | – | I B− | 49 | 1 | – |
I B+ | 92 | 0.270 (0.149–0.488) | < 0.001 | ||||
IIA | 123 | 1.340 (0.895–2.005) | 0.155 | IIA B− | 50 | 1.174 (0.701–1.968) | 0.542 |
IIA B+ | 73 | 0.407 (0.228–0.727) | 0.002 | ||||
IIB | 128 | 1.668 (1.138–2.447) | 0.009 | IIB B− | 46 | 1.412 (0.850–2.345) | 0.183 |
IIB B+ | 82 | 0.548 (0.327–0.918) | 0.022 | ||||
IIC | 8 | 1.501 (0.591–3.814) | 0.393 | IIC B− | 6 | 1.238 (0.430–3.569) | 0.692 |
IIC B+ | 2 | 0.445 (0.060–3.318) | 0.430 | ||||
IIIA | 44 | 1.317 (0.762–2.275) | 0.324 | IIIA B− | 16 | 0.891 (0.414–1.919) | 0.769 |
IIIA B+ | 28 | 0.542 (0.260–1.133) | 0.103 | ||||
IIIB | 327 | 2.617 (1.852–3.697) | < 0.001 | IIIB B− | 148 | 1.932 (1.249–2.988) | 0.003 |
IIIB B+ | 179 | 1.002 (0.643–1.559) | 0.995 | ||||
IIIC | 258 | 3.478 (2.424–4.990) | < 0.001 | IIIC B− | 127 | 2.679 (1.714–4.187) | < 0.001 |
IIIC B+ | 131 | 1.275 (0.809–2.008) | 0.295 |