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Retrospective Study
Copyright: ©Author(s) 2026.
World J Gastroenterol. Jun 14, 2026; 32(22): 117417
Published online Jun 14, 2026. doi: 10.3748/wjg.v32.i22.117417
Figure 5
Figure 5 Comparative analysis of adjuvant chemotherapy benefit in human epidermal growth factor receptor 2-positive and human epidermal growth factor receptor 2-negative patients before and after propensity score matching. A: Kaplan-Meier survival curve for overall survival (OS) in human epidermal growth factor receptor 2 (HER2)-negative patients before propensity score matching (PSM), showing a significant benefit from adjuvant chemotherapy; B: Kaplan-Meier survival curve for OS in HER2-positive patients before PSM, showing no significant difference between chemotherapy and non-chemotherapy groups; C: Kaplan-Meier survival curve for OS in HER2-negative patients after PSM, confirming the continued survival benefit of adjuvant chemotherapy; D: Kaplan-Meier survival curve for OS in HER2-positive patients after PSM, validating no significant benefit from conventional chemotherapy.


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