[Principles in medical statistics. 13. Causal or pragmatic clinical research].
D008499:Medical Records; D008722:Methods; D010919:Placebos; D012106:Research; D013223:Statistics as Topic; D013997:Time Factors
D010919:Placebos
Principper i medicinsk statistik. 13. Kausal eller pragmatisk klinisk forskning.