title: [Epidemiological methods for evaluating screening programmes].
abstract: The effect of screening programmes must be estimated before the programmes are implemented. Usually, the evaluation includes randomized trials if possible but even a large randomized trial will have limitations and need not estimate effects properly under routine conditions.
authors.affiliation: Sektion for Epidemiologi, Institut For Folkesundhed, Aarhus Universitet, Bartholins Alle 2, 8000 Aarhus C. jo@soci.au.dk.
authors.forename: Jørn
authors.initials: J
authors.lastname: Olsen
mesh_terms: D004812:Epidemiologic Methods; D008403:Mass Screening / Q000592:standards*; D064887:Observational Studies as Topic; D015397:Program Evaluation / Q000379:methods*; D016032:Randomized Controlled Trials as Topic