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Prognosis (Greek: πρόγνωσις "fore-knowing, foreseeing"; pl.: prognoses) is a medical term for predicting the likelihood or expected development of a disease, including whether the signs and symptoms will improve or worsen (and how quickly) or remain stable over time; expectations of quality of life, such as the ability to carry out daily activities; the potential for complications and ...
Patients with a certain disease (for example, colorectal cancer) can die directly from that disease or from an unrelated cause (for example, a car accident). When the precise cause of death is not specified, this is called the overall survival rate or observed survival rate. Doctors often use mean overall survival rates to estimate the patient ...
Lead time is the duration of time between the detection of a disease (by screening or based on new experimental criteria) and its usual clinical presentation and diagnosis (based on traditional criteria). [1] For example, it is the time between early detection by screening and the time when diagnosis would have been made clinically (without ...
Two aspects of the patient's state may be reported. The first aspect is the patient's current state, which may be reported as "good" or "serious," for instance. Second, the patient's short-term prognosis may be reported. Examples include that the patient is improving or getting worse.
Overdiagnosis is the diagnosis of "disease" that will never cause symptoms or death during a patient's lifetime. [9] It is a problem because it turns people into patients unnecessarily and because it can lead to economic waste [ 10 ] ( overutilization ) and treatments that may cause harm.
Five-year survival rates can be used to compare the effectiveness of treatments. Use of five-year survival statistics is more useful in aggressive diseases that have a shorter life expectancy following diagnosis, such as lung cancer, and less useful in cases with a long life expectancy, such as prostate cancer.
For people living with the disease, a sickle cell crisis can happen at any time. When it does, their rigid, sickle-shaped red blood cells become stuck in their blood vessels, blocking flow and ...
The objectives of clinical epidemiology are primarily to develop epidemiologically sound clinical guidelines and standards for diagnosis, disease progression, prognosis, treatment and prevention. The data obtained in epidemiological studies are also applicable for the epidemiological justification of preventive programmes for communicable and ...