The following hypothetical data comes from a cohort study of

The following hypothetical data comes from a cohort study of the relationship between liver disease and alcohol use. What is the name of the statistical measure would you use for analysis of the information? Show the formula you intend to use and calculate using numbers to reach the results. How do you interpret the results? What is the relationship between alcohol use and liver disease?

Alcohol Use with liver disease : 221

Alcohol Use with NO liver disease: 944

No Alcohol Use w/ disease 573

No Alcohol Use w/out disease 4991

Solution

sensitivity and specificty can be used to study the given data

Sensitivity = (No. of true positive)/ (no. of true positives + no. of false negatives)

No. of true posiives = Acohol users with liver disease = 221

No. of false negatives = Alcohol users with no liver disease = 944

Therefore, sensitivity= 221/(221+944) = 221/1165 = 0.189

Specificity = (No. of true negatives)/ (no. of true negatives + no. of false positives)

No. of true negatives = no alcohol use and without disease = 4991

No. of false negatives = no alcohol use and with disease = 573

Specificty= 4991/(4991 + 573) = 4991/5564= 0.897 = 89.7%

Sensitivity refers to the test\'s ability to correctly detect patients who do have the condition. in this casee, there is 20 % chance that people consuming alcohol develops liver disease

Specificity relates to the test\'s ability to correctly detect patients without a condition. In this case, of 90% specificty, there is 90 % chance that people without alcohol use develop no liver disease.

therefore, we can conclude there is no relation between alcohol use and liver disease