Table 2 Univariate and Multivariate Analysis for Survivals.

From: Circulating Tumour Cells as an Independent Prognostic Factor in Patients with Advanced Oesophageal Squamous Cell Carcinoma Undergoing Chemoradiotherapy

Prognostic Factors

Disease-specific Progression-free Survival

Overall Survival

Univariate

Multivariate

Univariate

Multivariate

HR for PD

(95% CI)

P value

HR for PD

(95% CI)

P value

HR for death

(95% CI)

P value

HR for death

(95% CI)

P value

Age, (yr)

 ≥50 vs. <50

1.108

(0.558–2.199)

0.770

   

0.930

(0.510–1.697)

0.814

   

Surgery after CCRT

 Yes vs. No

0.142

(0.049–0.413)

<0.001

0.160

(0.052–0.486)

0.001

0.189

(0.079–0.455)

<0.001

0.19

(0.076–0.472)

<0.001

ECOG PS

 0–1 vs.≥ 2

0.604

(0.286–1.272)

0.185

   

0.296

(0.157–0.556)

<0.001

0.276

(0.138–0.553)

<0.001

TNM Stage (7th ed.)

  

<0.001

  

<0.001

  

0.001

  

0.003

 Stage II

0.072

(0.009–0.591)

0.014

0.041

(0.004–0.388)

0.005

0.077

(0.010–0.612)

0.015

0.112

(0.013–0.944)

0.044

 Stage III

0.210

(0.094–0.470)

<0.001

0.186

(0.077–0.452)

0.000

0.310

(0.154–0.626)

0.001

0.306

(0.147–0.636)

0.002

 Stage IV

reference

reference

reference

reference

CTC number (cells/mL)

 ≥21.0 vs. <21.0

2.022

(1.010–4.049)

0.047

3.113

(1.427–6.791)

0.004

2.661

(1.375–5.150)

0.024

   

CTC number (cells/mL)

1.002

(0.999–1.004)

0.139

   

1.003

(1.001–1.005)

0.002

1.002

(1.000–1.004)

0.028

  1. Abbreviations: HR, hazard ratio; CI, confidence interval; PD, progressive disease; CCRT, concurrent chemoradiotherapy; ECOG PS, Eastern Cooperative Group performance status; CTC, circulating tumour cells.