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Table 8 Multivariate analysis with Cox proportional hazard model

From: Propensity score matching analysis of a phase II study on simultaneous modulated accelerated radiation therapy using helical tomotherapy for nasopharyngeal carcinomas

Factor

3-year LRRFS

3-year DMFS

3-year DFS

3-year OS

HR (95% CI)

P*

HR (95% CI)

P*

HR (95% CI)

P*

HR (95% CI)

P*

Treatment pattern (P67.5 vs.P70)

0.653 (0.249-1.714)

0.387

0.682 (0.286-1.623)

0.387

0.564 (0.310-1.024)

0.060

0.476 (0.236-0.957)

0.037

Gender (female vs. male)

2.481 (0.927-6.644)

0.071

0.279 (0.065-1.209)

0.088

0.878 (0.431-1.791)

0.721

0.765 (0.328-2.411)

0.535

Age (≥50 vs. <50 years)

2.672 (0.990-7.216)

0.052

2.617 (1.076-6.364)

0.034

3.058 (1.659-5.635)

0.000

2.914 (1.434-5.921)

0.003

T Stage (3–4 vs.1-2)

2.715 (0.784-9.404)

0.115

0.391 (0.105-1.453)

0.161

1.196 (0.558-2.562)

0.646

0.960 (0.382-2.411)

0.931

Node category (N+ vs. N-)

0.957 (0.172-5.328)

0.960

1.891 (0.389-9.196)

0.430

1.856 (0.607-5.681)

0.278

1.542 (0.483-4.925)

0.465

N Stage (2–3 vs. 0–1)

1.423 (0.383-5.291)

0.598

0.359 (0.085-1.515)

0.163

0.801 (0.351-1.824)

0.597

0.691 (0.255-1.872)

0.467

UICC Stage (III-IV vs. I-II)

4.031 (0.338-48.101)

0.270

9.786 (1.448-66.128)

0.019

4.487 (1.245-16.166)

0.022

4.208 (1.026-17.263)

0.046

  1. Abbreviations HR hazard ratio, CI confidence interval
  2. *P-values were calculated using the adjusted Cox proportional-hazards model