ANTC67H3 Lecture Notes - Lecture 7: Chronic Obstructive Pulmonary Disease, Bradford Hill Criteria, Recall Bias
Document Summary
The credibility of risk factor epidemiology can withstand only a limited number of false alarms. Real vs. spurious associaion: its is important to be able to disinguish between real (true) associaion and spurious (false) associaion in epidemiology, potenial reasons for spurious associaions. Causaion overview: an event, condiion, or characterisic (or a combinaion of these factors) which plays an important role in producing health outcomes , an understanding of the causes of disease is important for: Most women who use ocs do not develop cervical cancer some woman with cervical cancer did not use ocs. Neither necessary nor suicient: muliple factors are required each has a set of cofactors, this scenario is best approximaion of causes of chronic disease, corresponds to a web of causaion, factor a + factor b. When the cause is a highly pathogenic infecious agent, chemical, poison, or other speciic factor. When there are no healthy carriers of the pathogen.
