Objective: The purpose of this review is to discuss basic methods of the biostatistical study design and analysis. Design: A review article. Setting: OBGYN clinic, 1st Medical Faculty, Charles University, Teaching Hospital Bulovka, Prague. Subject: The medical research requires the complexity of special skills, including medical practice, biological understanding and biostatistical expertise. The following article discusses methods of the biostatistical study design and analysis using synoptical clinical and health examples.

        Key words: biostatistics, descriptive study, analytical study