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. Author manuscript; available in PMC: 2013 Apr 10.
Published in final edited form as: Pract Radiat Oncol. 2011 Aug 3;2(2):77–85. doi: 10.1016/j.prro.2011.06.009

Table 4.

Univariate analysis for overall survival and progression-free survival

Outcomes P value Hazard ratio
Overall survival
 Age >65 y .0114 1.729
 KPS >80 .0008 0.425
 Weight loss >30 lbs .4496 0.832
 Hgb >12 g/dL .5618 0.887
 CA19-9 >1000 U/mL .2552 1.378
 Tumor size >3 cm .8786 1.040
 Pancreatic head involvement .6266 1.107
 Induction chemotherapy .3439 0.573
 5-FU vs gemcitabine (concurrent chemotherapy) .1904 0.705
 Treatment break .0006 2.073
  Toxicity break vs no break .0021 1.955
  Planned break vs no break .2848 1.654
 Palliative procedure .1275
  Bypass vs none .1481 0.667
  Stent vs none .6371 1.121
  Stent vs bypass .0400 1.680
 Local disease status at 1st post-therapy imaging .0261
  Partial response vs progressive disease .0266 0.364
  Stable disease vs progressive disease .0089 0.415
  Partial response vs stable disease .7058 0.877
 Best local response .0223
  Partial response vs progressive disease .0099 0.346
  Stable disease vs progressive disease .0115 0.425
  Partial response vs stable disease .4803 0.814
Progression-free survival
 Age >65 y .0662 1.474
 KPS >80 .0056 0.507
 Weight loss >30 lbs .6661 1.107
 Hgb >12 g/dL .7331 2.115
 CA19-9 >1000 U/mL .0084 2.115
 Tumor size >3 cm .3655 1.251
 Pancreatic head involvement .8779 1.031
 Induction chemotherapy .2107 0.527
 5-FU vs gemcitabine (concurrent chemotherapy) .6406 0.887
 Treatment break .0020 1.910
  Toxicity break vs no break .0140 1.680
  Planned break vs no break .0908 2.245
 Palliative procedure .3397
  Bypass vs nothing .1463 0.683
  Stent vs nothing .5790 0.878
  Bypass vs stent .3080 0.778

KPS, Karnofsky performance status; Hgb, hemoglobin.