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. 2022 Jan 15;15:637–644. doi: 10.2147/IJGM.S342917

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© 2022 Dai et al.

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Two groups of patients with PFS. The Log rank test was used for evaluating the PFS and found that the median survival (8 months) in OG was significantly higher than those (5 months) in CG, with statistical difference (P=0.017).

Abbreviations: PFS, progression-free survival; CG, control group; OG, observation group.