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Table 3 Multivariate analyses of factors by cox regression model associated with recurrence-free survival (RFS) in test and validation cohort (*, P < 0.05; **, P < 0.01)

From: Evaluation of high-risk clinicopathological indicators in gastrointestinal stromal tumors for prognosis and imatinib treatment outcome

  Test cohort   Validation cohort  
Variable RFS hazard ratio (95% Cl) Pvalue RFS hazard ratio (95% Cl) Pvalue
Tumor size (≤10, > 10 cm) 1.525 (0.465-5.001) 0.486 2.084 (0.901-4.821) 0.086
Mitosis count (≤10, > 10/50 HPF) 3.388 (1.193-9.636) 0.022* 4.117 (1.845-9.185) 0.001**
Serosal invasion (Yes, No) 10.220 (2.862-36.493) <0.001** 2.960 (1.237-7.079) 0.015*