PUBHLTH 122 Lecture 8: 1/30/17 Lecture Notes

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However, this is not the situation that ordinary physicians and patients would encounter: this sho(cid:449)s us if it can (cid:449)ork (cid:271)ut doesn"t ensure that it will work. For many interventions, efficacy data lacking because: they are expensive, difficult to perform, become obsolete, are not generalizable. Study of effectiveness: take into account, heterogeneity of patient population, variable physician skills/experience, effects of interventions in presence of other illness, variations in management along care pathway, these are observational studies. We observe what happens in the actual world. They are not the gold standard but they have their own strength. There is a lot of variability and the data is generalizable. Figure #22: demand curve: shows you the relationship between how much a person would buy at each price. Its do(cid:449)n(cid:449)ard sloping (cid:271)e(cid:272)ause (cid:449)hen it is e(cid:454)pensi(cid:448)e, (cid:449)e don"t (cid:271)u(cid:455) a lot and (cid:448)i(cid:272)e (cid:448)ersa.

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