title: Representative data remains the key for national benchmarks.
authors.forename: P T
authors.initials: PT
authors.lastname: Ashwin
authors.forename: S R
authors.initials: SR
authors.lastname: Mohamed
mesh_terms: D019985:Benchmarking; D002387:Cataract Extraction / Q000009:adverse effects*; D054869:Clinical Audit / Q000379:methods*; D006801:Humans; D008499:Medical Records; D057851:Posterior Capsular Rupture, Ocular / Q000453:epidemiology*; D015983:Selection Bias