Table 2 Overall survival analyses according to delta RDW in 594 patients with ESCC

delta RDW(≥ 0.44 vs.<0.44)

1.337

1.014–1.762

0.039

1.356

1.025–1.793

0.033

Sex (male vs.female)

1.204

0.793–1.829

0.383

Age (> 60 vs.≤60)

1.157

0.880–1.520

0.297

Pathology grade

Well differentiated

0.154

0.019–1.225

0.077

middle differentiated

0.260

0.036–1.871

0.181

Poorly differentiated

0.384

0.053–2.779

0.343

Undifferentiated

1.000

Depth of tumor

T1a–1b

0.486

0.257–0.920

0.027

0.524

0.225–1.217

0.133

T2

0.593

0.404–0.869

0.007

0.567

0.292–1.099

0.093

T3

1.000

Lymph node metastasis

N0

0.134

0.087–0.204

< 0.001

0.099

0.034–0.287

< 0.001

N1

0.250

0.167–0.375

< 0.001

0.263

0.171–0.405

< 0.001

N2

0.414

0.269–0.635

< 0.001

0.448

0.291–0.689

< 0.001

N3

1.000

Pathological stage

1a–1b

0.310

0.190–0.507

< 0.001

2.632

0.573–12.092

0.213

2a–2b

0.386

0.278–0.536

< 0.001

1.468

0.602–3.581

0.399

3a–3c

1.000

Vessel invasive (absence vs. presence)

1.808

1.369–2.388

< 0.001

1.194

0.884–1.612

0.248

Nerve infiltration (absence vs. presence)

1.899

1.447–2.493

< 0.001

1.483

1.112–1.977

0.007

Treatment regimen

S

1.131

0.692–1.848

0.623

 S + postoperative C

1.327

0.777–2.269

0.300

 S + postoperative CRT

1.000

delta NLR

1.016

0.973–1.061

0.473

delta PNI

1.008

0.986–1.030

0.499