Skip to main content


Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

Table 1 Classification of design methods (after Wang and Zhang, 1988) [19]

From: A survey of statistics in three UK general practice journal

Design method
Case report
Cross-sectional survey
Retrospective study
Prospective study
Clinical trial
basic science study