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The association between AA intake and the prevalence of ED before and after PSM. Notes: Quartile grouping of AA intake: Q1: 0–25%; Q2: 25-50%; Q3: 50-75%; Q4: 75-100%. A, C, E stands for before PSM. B, D, F stands for after PSM. Abbreviations: AA, arachidonic acid; ED, erectile dysfunction; PSM, propensity score matching; OR, odds ratio; CI, confidence interval; Ref, reference
