EBCOG Part 1 2 Weeks Crash Course Biostatistics and Hot topics Day 2

1.Type of delivery is which type of variable?

2.What is the standard error of mean of glucose if the mean glucose is 100 mg/dl in a population of 100 women and variance is 25 mg/dl?

3.The following plot is used to represent which of the following characteristics of a data?

4.Which graph amongst the following is used to represent frequency distribution of a continuous variable?

5.If the mean cholesterol reported was 250 and SD reported was 20 in a group of 1000 obese women. What is the 95% Confidence interval?

6.A RCT done to find the effect of a drug on cholesterol levels in pregnant women compared to placebo, reports that its power is 0.8. what does it mean?

7.Beta error of <0.2 here means

8.A study was done in only 10 women to find if there is an association between lower back ache and epidural delivery. Which appropriate test can be used?

9.Which amongst the following is a test that is done if the data in the population is not normally distributed?

10.Which of the following tests can be used to find if the mean communication score of obstetricians has improved after a training session or not?

11.The diamond represented in a forest plot indicates

12.Which study is appropriate to find the likelihood of a rare cancer in a woman who is exposed to a carcinogen?

13.Following is a graph. The x and y axis represents True and false positive rate respectively. Which type of graph is it?

14.The equation Sensitivity/1-Specificity represents which of the following?

15.Specificity of a test reported means

16.Number of women not having sepsis amongst those who are ruled out by a new test represents which of the following?

17.Following is the information in 2×2 table regarding a diagnostic accuracy study. What is the Positive predictive value of the new test?

18.In a study to detect thromboembolism, a new test was devised and they found the following data. What is the false positive rate of the new test?

19.Aspirin was administered to prevent cardiac events. Out of 1000 women who were administered aspirin 200 developed cardiac events and out of 1000 women who were given placebo 400 women developed cardiac events. If 100 women were treated how many women will be prevented from developing a cardiac event?

20.1000 working women and 1100 women who are house wife are followed up through pregnancy ,400 working women had LBW babies and 210 house wives had LBW babies, the prevalence calculated is