Translations:Advanced Field Epi:Manual 1 - Disease Investigation/310/en

Revisi per 25 Agustus 2014 02.30 oleh FuzzyBot (bicara | kontrib) (Importing a new version from external source)
(beda) ← Revisi sebelumnya | Revisi terkini (beda) | Revisi selanjutnya → (beda)

A comparable group of non-cases (controls) then has to be selected for comparison. Selection of controls for a case-control study is a complex subject and these notes provide brief coverage of simple points.