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Table 2 Univariable and multivariable analyses of local recurrence

From: Influence of radiation dose and predicted tumor invasion depth on local recurrence after definitive chemoradiotherapy for stage 0–I esophageal squamous cell carcinoma: a propensity score-weighted, retrospective, observational study

Covariates

Univariable analysis

Multivariable analysis

HR

CI

p-value

HR

CI

p-value

Dose group

 High-dose (reference)

1.00

1.00

 Standard-dose

3.08

1.30–7.34

0.011

4.09

1.65–10.14

0.002

Age (years)

 40–64 (reference)

1.00

 65–74

0.94

0.39–2.26

0.88

 75–86

0.87

0.32–2.36

0.79

Sex

 Female (reference)

1.00

 Male

0.96

0.33–2.77

0.93

Tumor location

 Mt (reference)

1.00

1.00

 Ce or Ut

2.34

0.87–6.29

0.092

3.39

1.17–9.78

0.024

 Lt

1.89

0.77–4.66

0.16

3.00

1.13–7.93

0.027

Tumor length (mm)

 ≤ 40 (reference)

1.00

1.00

 > 40 and ≤ 80

0.33

0.11–0.99

0.048

0.42

0.14–1.28

0.13

 > 80

1.18

0.46–3.02

0.73

2.72

0.90–8.21

0.075

Clinical depth of invasion

 EP/LPM or MM/SM1 (reference)

1.00

1.00

 SM2

2.37

1.03–5.46

0.042

2.89

1.14–7.34

0.026

Chemotherapy

 Cisplatin + 5-fluorouracil (reference)

1.00

 Others

1.83

0.55–6.08

0.33

  1. Abbreviations: HR Hazard ratio, CI Confidence interval, Mt Middle thoracic esophagus, Ce Cervical esophagus, Ut Upper thoracic esophagus, Lt Lower thoracic esophagus, EP/LPM Tumor limited to the epithelium or invading the lamina propria mucosa, MM/SM1 Tumor invading the muscularis mucosa or submucosa to a depth of ≤ 200 μm from the lower border of the muscularis mucosa, SM2 Tumor invading the submucosa to a depth of > 200 μm