By definition, disability is the lack of physical, emotional, moral and immune competence within an individual (Stone, 2004). In immune-compromised individuals, it has been observed that prevalence of diseases is higher. As a consequence, more focus in epidemiology is currently laid on the ability of specific conditions to impair defense mechanisms of the body. In the compromised individuals, high-risk behaviors have been cited to have higher negative impacts as compared to people with normally functioning systems. Therefore, it is important to measure the proportion of disabled people (Stone, 2004).In review of the above terminologies and cases, it becomes apparent that the major aim of different strategic measures in epidemiology is to enhance the quality of healthcare. In this bid to attain quality care, epidemiology faces a wide array of barriers. Most notably, ethical constrains have often led to selection biasness, a development that is not favorable to inclusivity and impartiality of data collected in such studies. In addition, the quality is subject of influence by measurement errors. Further, it is notable that some data collected are not reproducible. Therefore, there is increasing need for development of more accurate epidemiological techniques (Stone,. Description of Epidemiological Terms.
Scutchfield, F. D., & Keck, C.W. (2003). Principles of public health practices (2nd. ed.) New York: Thomson Delmar Learning. Chs 9-13, 140-252.
Stone, D. (2004). An introduction to epidemiology in general practice. GP. London. 54.
Stone, D. (2004). Epidemiology can boost health plans. GP. London. 53.
Stone, D. (2004). Four measures of disease frequency. GP. London. 46.
Travel Bugs Anoymous. (2004). Foreign policy. Washington: Nov/ Dec 2004. 19.
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