Confounding by indication and past clinical trials

Epidemiology

Volumn 8, Issue 2, 1997, Pages 219-220

  Porta, Miquel ^a  

^a UNIVERSITAT AUTÒNOMA DE BARCELONA   (Spain)

Author keywords

[No Author keywords available]

Indexed keywords

ANTIULCER AGENT; CIMETIDINE;

CHEMICALLY INDUCED DISORDER; CLINICAL TRIAL; CONTROLLED CLINICAL TRIAL; EPIDEMIOLOGY; HUMAN; NOTE; RANDOMIZED CONTROLLED TRIAL; REPRODUCIBILITY; STOMACH TUMOR;

ANTI-ULCER AGENTS; CIMETIDINE; CONFOUNDING FACTORS (EPIDEMIOLOGY); HUMANS; RANDOMIZED CONTROLLED TRIALS; REPRODUCIBILITY OF RESULTS; STOMACH NEOPLASMS;

EID: 0031088606     PISSN: 10443983     EISSN: 15315487     Source Type: Journal    
DOI: None     Document Type: Article

References (4)

1. Walker AM. Confounding by indication. Epidemiology 1996;7:335-336.
2. Walker AM. Stampfer MJ. Observational studies of drug safety. Lancet 1996;348:489.
3. Porta M, Hartzema AG. The contribution of epidemiology to the study of drug effects. Drug Inteil Clin Pharm 1987;21:741-747.
4. Coronary Drug Project Research Group. Influence of adherence to treatment and response of cholesterol on mortality in the Coronary Drug Project. N Engl J Med 1980;303:1038-1041.