صفحه محصول - دانلود فایل پاورپوینت آماده اندازه های وقوع بیماری

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دسته بندی : پاورپوینت
نوع فایل : PowerPoint (..pptx) ( قابل ویرایش و آماده پرینت )
تعداد صفحه : 48 صفحه

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بنام خدا 1 2 اندازه های وقوع بیماری Reverse causality When lifelong smokers are told they have lung cancer, many may then quit smoking. This change of behavior after the disease develops can make it seem as if: ex-smokers are actually more likely to die of lung cancer than current smokers. the decisions by smokers to stop smoking or drinking did not cause them to get sick and die. Reverse causality When people become concerned about their high risk of having a heart attack because of a family history of heart disease, they are more likely than the general population to reduce their intake of foods high in saturated fat and cholesterol. So, while these people’s current diets may be lower in saturated fat and cholesterol, they may still be more likely to have a heart attack. 5 اهداف تعریف و کاربرد نسبت (ratio) تناسب (proportion) میزان (rate) شانس (odds) تعریف و کاربردهای شیوع (prevalence) بروز بروز تجمعی (cumulative incidence) میزان بروز یا چگالی بروز (incidence rate or density)