CASE-CONTROL RESEARCH STUDY Article Example | Topics and Well Written Essays - 500 words

CASE-CONTROL RESEARCH STUDY - Article Exampleof Interest The subjects recruited for the persona study were exposed to trihalomethane, a by-product produced during the chlorination of water, which is done for the purpose of disinfection.Patients who were histologically confirmed to have primal bladder cancer were recruited as the discipline population for the study and they were identified with the help of urologic services. The other inclusion criterias for the recruitment of the case population were age group between 20 and 80 eld and they must reside within the geographical area surrounding the hospital.The study was a multi-center case-control study conducted in Spain and the subjects were recruited from 18 participating hospitals located at five different geographic regions in and around Spain. The cases were recruited by regular reviews of the discharge and pathology records in hospitals at by the research staffs who were involved in the study.The number of cases who parti cipated in the study was 338 out of the 1,457 eligible cases who were interviewed. However the article does not provide any information around the eligible subjects who were not part of the subjects. The reason for their non-participation has not been mentioned.The control population was chosen from the same hospitals where the case subjects were recruited. The control group included patients who suffered from problems like hernias, orthopedic problems, circulatory disorders, and who were admitted to the hospital. Those who had problems that were related to the study were not chosen as controls. About 582 controls from 1,465 eligible controls were selected. Signed informed consents were obtained from both the case and control participants before onset of the study.During the initial interview demographic information and familial, medical, including smoking history, and occupational history of all the eligible participants were quiet using computer assisted software. The short li sted case and control population were