There are four types of studies you can use in the design of a medical research study, those being a randomized scientific trial, case control research, cohort study, and longitudinal study. A randomized medical trial study is “a clinical study where you are not selected participants with comparable characteristics are randomly assigned to different test groups in order to the efficacy of therapies” (Randomized Clinical Trial, 2011, para. 1). A case control study is epidemiological study used to identify factors that could contribute to a medical illness by comparing those who have the condition or condition of interest (the cases) with those who do not have the disease or current condition of interest (the controls). A cohort study is “a study privatni fakultet in which subjects who presently have a certain condition and receive a particular treatment are followed over time and compared with another party who are not afflicted by the condition under investigation” (What is Cohort Research?, 2011, para. 1). A longitudinal study is a study under patients over a prolonged time frame. Some sources also describe a longitudinal study as one in which the same patients are examined on two or more situations.
A study can either be retrospective or potential. Retrospective studies look in reverse in time and looks at exposures to suspected danger or protection factors in relation to an end result that is established at the start of the research. In contrast, a possible study looks forward in time and watches for outcomes, including the development of a disease, during the study period and relates this to other factors such as suspected risk or protection factor(s).
This particular study shows evidence that aspirin use correlates with lowered risks of intestinal tract cancer and maybe several other cancers, including prostate and breast cancer. The examine method examined associations between long-term daily use of adult strength aspirin (325 mg/day) measuring overall cancer incidence and incidence of 10 types of tumor among 69810 men and 76303 women. These men and women, who were relatively elderly, took part in the Cancer Reduction Study.
Since this study is a potential cohort study, it will have several specific abilities and failings. Strengths are that there is the probability to study multiple exposures and multiple final results in a single cohort and rare exposures can be researched. Major weaknesses are that it is not possible to establish causal effects and it is easily vulnerable to selection bias. Also, possible cohort studies could be very expensive to perform.
Within summary, reviewing medical research studies can help improve a student’s knowledge of biostatistics and its applications. Whenever reviewing these studies, it is crucial for students to comprehend the kind of study used and the potential strengths and weaknesses associated with each study. Following this understanding is achieved, a student will be able to question the validity of medical research that he or the lady is reading in an aim manner.
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