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Kaplan-Meier curves of overall survival (OS) according to the type of stent. No significant diferrence was observed between the two groups (p=0.757). The median OS was 189 days (95% confidence interval [CI], 99–270) in the plastic stent (PS) group and 164 days (95% CI, 95–281) in the covered self-expandable metallic stent (cSEMS) group.
