Clinical trial · Clinical trial protocol · Clinical trial management · Academic clinical trials · Study design

Randomized controlled trial (Blind experiment, Open-label trial)

Cross-sectional study vs. Longitudinal study

Cohort study (Retrospective cohort study, Prospective cohort study)

Case-control study (Nested case-control study)

Case series · Case study/Case report

occurrence: Incidence (Cumulative incidence) · Prevalence (Point prevalence, Period prevalence)

association: absolute (Absolute risk reduction, Attributable risk, Attributable risk percent) · relative (Relative risk, Odds ratio, Hazard ratio)

other:Mortality rate · Morbidity · Case fatality · Specificity and sensitivity · Likelihood-ratio test

In vitro/In vivo · Animal testing · Animal testing on non-human primates · First-in-man study · Multicenter trial · Seeding trial

Risk-benefit analysis

Selection bias · Correlation does not imply causation · Null result