19bec0cb_ocess___Cancer_Guidelines_Wiki__Prognosis
[Level] III-2 [Intervention] A comparative study with concurrent controls: Non-randomised, experimental trial Cohort study Case-control study Interrupted time series with a control group [Diagnosis] A comparison with reference standard that does not meet the criteria required for Level II and III-1 evidence [Aetiology] A retrospective cohort study [Screening] A comparative study with concurrent controls: Non-randomised, experimental trial Cohort study Case-control study [Prognosis] 
Analysis of prognostic factors amongst untreated control patients in a randomised controlled trial
Guideline development process - Cancer Guidelines Wiki
Prognosis