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Table 2 Univariate Cox regression analysis with respect to overall survival

From: Metabolic parameters of sequential 18F-FDG PET/CT predict overall survival of esophageal cancer patients treated with (chemo-) radiation

Parameter Risk HR 95% CI p value
Clinical parameters
 Gender Male 1.18 0.74–1.89 0.477
 Age > 58.5 1 0.98–1.02 0.698
 Tumor_grade > 2 2.63 1.71–4.05 0
 T stage > 3 1.52 1.10–2.08 0.01
 N stage > 1 1.46 1.13–1.89 0.003
 UICC stage >II 2.19 1.50–3.22 0
 Localization middle 1.31 1.04–1.65 0.02
 Length of tumor > 3.5 1.18 1.08–1.28 0
 Concurrent chemo No 0.99 0.66–1.48 0.943
PET parameter
 SUVmax1 > 9.6 1.01 0.98–1.04 0.419
 SUVmax2 > 7.8 1.16 1.07–1.25 0
 ΔSUVmax < 0.23 0.85 0.51–1.42 0.538
 MTV1 > 10.5 1.02 1.01–1.03 0
 MTV2 > 15.9 1.01 0.99–1.03 0.395
 ΔMTV > 0.075 1.17 0.98–1.40 0.001
 TLG1 > 59.8 1 1.0–1.01 0.001
 TLG2 > 44.3 1.01 1.0–1.01 0.019
 ΔTLG > 0.27 1.21 0.91–1.62 0.014
  1. HR Hazard ratio, CI Confidence interval
  2. Values in bold are showing at least trend for significance with p < 0.1 in univariate analyses