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Table 3 Multivariate analyses of prognostic factors

From: AJCC 7th edition staging classification is more applicable than AJCC 8th edition staging classification for invasive IPMN

Demographic or characteristic 7th edition 8th edition
HR (95% CI) P HR (95% CI) P
Age, years
 < 70 1   1  
 ≥ 70 1.32 (1.14–1.52) < 0.001 1.35 (1.16–1.55) < 0.001
Sex
 Male 1   1  
 Female 1.04 (0.90–1.20) 0.572 1.04 (0.90–1.20) 0.574
Race     
 White 1   1  
 Black 0.91 (0.69–1.19) 0.479 0.89 (0.68–1.17) 0.402
 Others 0.80 (0.61–1.04) 0.094 0.79 (0.60–1.03) 0.083
Location
 Head 1   1  
 Others 1.10 (0.94–1.27) 0.247 1.08 (0.93–1.26) 0.290
Grade
 Low, intermediate 1   1  
 High 1.24 (1.03–1.49) 0.027 1.20 (1.00–1.45) 0.056
 Unknown 1.15 (0.97–1.36) 0.111 1.10 (0.93–1.31) 0.253
Stage
 IA 1   1  
 IB 1.48 (0.94–2.31) 0.087 1.48 (1.02–2.15) 0.040
 IIA 2.33 (1.54–3.51) < 0.001 1.26 (0.86–1.85) 0.232
 IIB 4.31 (2.94–6.31) < 0.001 2.91 (2.09–4.05) < 0.001
 III 6.08 (3.76–9.83) < 0.001 4.14 (2.94–5.82) < 0.001
 IV 11.81 (8.13–17.14) < 0.001 8.95 (6.58–12.18) < 0.001
C-index 0.75 < 0.001 0.75 < 0.001
  1. SEER Surveillance, Epidemiology, and End Results program, AJCC American Joint Committee on Cancer