This was a question on my homework and I would like to know if I answered it correctly. Thank you for your help. 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. 14/4 = 3.5 Compute the odds of miscarriage in women with no heavy alcohol use in pregnancy. 36/46 = .78 Compute the odds ratio for miscarriage as a function of heavy alcohol use. PPex= 14/100 = .14. PPunex= 36/100 = .36. .14(1-.14)/.36(1-.36) = .52
Correlation
Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.
Linear Correlation
A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related.
Regression Analysis
Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.
This was a question on my homework and I would like to know if I answered it correctly. Thank you for your help.
- 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.
14/4 = 3.5
Compute the odds of miscarriage in women with no heavy alcohol use in pregnancy.
36/46 = .78
Compute the odds ratio for miscarriage as a
PPex= 14/100 = .14. PPunex= 36/100 = .36.
.14(1-.14)/.36(1-.36) = .52
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