By Nessar Ahmed; et al
Biology of Disease describes the biology of a number of the human problems and ailment which are encountered in a scientific surroundings. it really is designed for first and moment 12 months scholars in biomedical technology courses and also will be a powerful reference for future health technology execs in addition to being helpful to scholars starting scientific college. genuine situations are used to demonstrate the significance of biology in knowing the motives of ailments, in addition to in analysis and remedy.
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These cells form benign or malignant tumors (Chapter 17). Malignant neoplasms are a major cause of death in many developed countries. Moreover, their incidence is increasing as people live longer. W^dad\nd[Y^hZVhZ EPIDEMIOLOGY OF DISEASE Traumatic diseases are caused by physical injury and include mechanical trauma, extremes of heat or cold, electrical shock and radiation. Apart from the obvious problems caused by extensive damage to tissues, traumatic diseases may render an individual more prone to infection by compromizing the immune system (Chapter 4).
This ability is described by the predictive values of the test. The predictive value of a positive test is deﬁned as: Predictive value of positive test = TP s 100 / TP + FP Speciﬁcity = TN s 100 / TN + FP A test with a speciﬁcity of 90% means that, on average, 90 out of 100 individuals without the disease would give a negative test. Conversely, 10 of these individuals would give a positive result even though they do not have any disease. and of a negative test as: Predictive value of negative test = TN s 100 / TN + FN A test of 90% sensitivity means that, on average, 90% of individuals with the disease will give a positive test while the remaining 10% of individuals with the disease would give a negative result.
Every disease has a distinct set of features that include a cause, associated clinical symptoms and a characteristic progression, with associated morphological and functional changes in the patient. The presence of an abnormality on its own, however, does not necessarily indicate disease since the affected individual must also suffer from ill health. Health can be defined as an absence of signs and symptoms associated with any disease. This definition has limitations in that there are circumstances where individuals believe they are ill even though detectable indications of disease are not present.
Biology of disease by Nessar Ahmed; et al