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Calculating odds ratio using real example

Please check odds of heavy use and odds of no heavy use are correct. Also, please provide details to find the odds ratio portion.

2. A case-control study is conducted to assess the relationship between heavy alcohol use during the first trimester of pregnancy and miscarriage. Fifty women who suffered miscarriage are enrolled along with 50 who delivered full term. Each participant's use of alcohol during pregnancy is ascertained. Heavy drinking is defined as 4 or more drinks on one occasion. The data are shown below.

Miscarriage Delivered Full Term
Heavy Alcohol Use 14 4
No Heavy Alcohol Use 36 46

Compute the odds of miscarriage in women with heavy alcohol use in pregnancy.

Odds Heavy Use = 14:4

Compute the odds of miscarriage in women with no heavy alcohol use in pregnancy.

Odds No Heavy Use 36:46

Compute the odds ratio for miscarriage as a function of heavy alcohol use.

Odds Ratio = ?

Solution Preview

Miscarriage Delivered Full Term
Heavy Alcohol Use 14 ...

Solution Summary

The solution gives detailed steps on calculating odds ratio. All the formula and calcuations are shown and explained.

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