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RFS in ASCC by SES. Survival curves were created in STATA software version 15 using the Kaplan‐Meier method with the log‐rank test for significance. Only variables significant at P < .05 in logrank test or Cox proportional hazards regression are shown. ASCC, anal squamous cell carcinoma; RFS, relapse‐free survival; SES, socioeconomic status; TN, tumor‐node
