Epidemiology is the science which deals with what falls upon people ,and it is the bridge between biomedical, social and behavioral sciences
Definition Study of the occurrence and distribution of health-related diseases or events
in specified populations
Epidemiology is the study of the distribution and determinants of health-related states or events (including disease), and the application of this study to the control of diseases and other health problems.(WHO)
Various methods can be used to carry out epidemiological investigations: surveillance and descriptive studies can be used to study distribution; analytical studies are used to study determinants
Purposes of Epidemiology
To investigate nature / extent of health-related
phenomena in the community / identify priorities
To study natural history and prognosis of health-
related problems
3.To identify causes and risk factors
Epidemiological measurement
Incidence is a count of new cases of the disease (or outcome).
Uses of Incidence
1.To control disease
2.For research in to etiology, pathogens ,distribution of disease, efficacy of prevention and therapeutic measure
Prevalence, on the other hand, counts both new and existing cases of the disease.
Uses of Prevalence
1.To estimate the magnitude and health /disease problems in community and identify potential high-risk group.
2. For administrative and planning purposes
For prevalence
المادة المعروضة اعلاه هي مدخل الى المحاضرة المرفوعة بواسطة استاذ(ة) المادة . وقد تبدو لك غير متكاملة . حيث يضع استاذ المادة في بعض الاحيان فقط الجزء الاول من المحاضرة من اجل الاطلاع على ما ستقوم بتحميله لاحقا . في نظام التعليم الالكتروني نوفر هذه الخدمة لكي نبقيك على اطلاع حول محتوى الملف الذي ستقوم بتحميله .
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