Exposure to excessive alcohol use and the onset of liver cancer was studied in a cohort...
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Exposure to excessive alcohol use and the onset of liver cancer was studied in a cohort study. A total of 8 472 study subjects were followed up for one year. Of the study subjects, 1262 were excessive alcohol users. During the follow-up, 263 cases of liver cancer were diagnosed and 96 of the cases were among excessive alcohol users. The total follow-up time was 2857.3 person-years for the excessive alcohol users and 5440.4 person-years for the non-excessive alcohol users. a. Summarise the information in a 2x2 table [6 marks] What was the prevalence of excessive alcohol use at the beginning of the follow-up [8 marks] b. C. Calculate occurrence measures for excessive alcohol users and non-excessive alcohol users [8 marks] d. Calculate relative and attributable risks measuring the associations between excessive alcohol use and liver cancer [8 marks] Exposure to excessive alcohol use and the onset of liver cancer was studied in a cohort study. A total of 8 472 study subjects were followed up for one year. Of the study subjects, 1262 were excessive alcohol users. During the follow-up, 263 cases of liver cancer were diagnosed and 96 of the cases were among excessive alcohol users. The total follow-up time was 2857.3 person-years for the excessive alcohol users and 5440.4 person-years for the non-excessive alcohol users. a. Summarise the information in a 2x2 table [6 marks] What was the prevalence of excessive alcohol use at the beginning of the follow-up [8 marks] b. C. Calculate occurrence measures for excessive alcohol users and non-excessive alcohol users [8 marks] d. Calculate relative and attributable risks measuring the associations between excessive alcohol use and liver cancer [8 marks]
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a Excessive alcohol users Nonexcessive alcohol users Cases of liver cancer 96 263 No cases ... View the full answer
Related Book For
Campbell Biology
ISBN: 978-0321775658
10th edition
Authors: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
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