Skip to main content

Table 4 Subgroup analyses according to chemotherapy (P for interaction: 0.679)

From: Comparative effectiveness of primary tumor resection in patients with stage III pancreatic adenocarcinoma

  No chemotherapy or unknown Chemotherapy
OS
 Non-adjusted 0.58 (0.51, 0.65) < 0.001 0.67 (0.55, 0.81) < 0.001
 Adjusted
  Traditional regression model 0.58 (0.51, 0.66) < 0.001 0.61 (0.48, 0.76) < 0.001
  2SRI IV model 1.27 (0.51, 3.13) 0.610 0.43 (0.09, 2.15) 0.304
DSS
 Non-adjusted 0.55 (0.49, 0.63) < 0.001 0.67 (0.55, 0.82) < 0.001
 Adjusted
  Traditional regression model 0.56 (0.49, 0.64) < 0.001 0.61 (0.48, 0.77) < 0.001
  2SRI IV model 1.31 (0.51, 3.34) 0.573 0.56 (0.10, 3.14) 0.508
  1. PTR was the reference (HR: 1). Data are shown as HR (95%CI) P value. All adjusted models were adjusted for: age, race, sex, year of diagnosis, tumor location and tumor size. OS, overall survival; DSS, disease-specific survival; 2SRI, 2 stage residual inclusion; IV, instrumental variable