title: Clinical research of kidney diseases II: problems of study design.
authors: Clinical Epidemiology Unit, Faculty of Medicine, Memorial University of Newfoundland, Canada. p.ravani@ospedale.cremona.it
authors: Pietro
authors: P
authors: Ravani
authors: Patrick S
authors: PS
authors: Parfrey
authors: Elizabeth
authors: E
authors: Dicks
authors: Brendan J
authors: BJ
authors: Barrett
mesh_terms: D015982:Bias; D035843:Biomedical Research; D002986:Clinical Trials as Topic; D015331:Cohort Studies; D006801:Humans; D007674:Kidney Diseases / Q000175:diagnosis* / Q000453:epidemiology / Q000628:therapy*; D009398:Nephrology / Q000379:methods*; D012372:ROC Curve; D015203:Reproducibility of Results; D012107:Research Design; D012306:Risk; D012494:Sampling Studies; D013997:Time Factors; D016896:Treatment Outcome