Reference no: EM132650607

Question 1:

A researcher investigated the effectiveness of training primary care medical providers on how to do risk screenings for substance use with their youth patients. Providers were randomly assigned either to a standard training approach (lecture about risky adolescent behaviors) or an enhanced training approach (role plays and reading through realistic case scenarios). There were 20 providers assigned randomly to each group.
Six months after the training, a random sample of youth patient records were examined and the percent of youth patients who had received a risk screening during their visit was noted. These data were used to create a "screening score" for each provider that could range from 0 to 100 percent. The distributions of provider screening score are attached.

1. Provide descriptive statistics for each of the samples Separately mean, standard deviation, median, IQR, Q1, Q3, range, min and max.

2. Which of the two measures of central tendency, mean or median, is more appropriate for summarizing each of these samples? What measure of dispersion is more appropriate for each?

3. Using the Tukey fences method, are there outliers in either sample? If so, what values are outliers? Show your calculations.

Question 2:
Using the data in Question 1, create frequency histograms for each of the samples that will allow you to compare the distribution of the data in each group.

Please format and label the histograms as described in the lecture, and consistent with the examples in the Sullivan text (e.g., Figures 4-6 through 4-10).

Hint: Even though the datasets are small, you should have at least 4 "bins" of data for each dataset.

Question 3:
The following are body mass rides (BMI) scores measured in 12 patients who as free of diabetes and participating in a study of risk factors Inc obesity. Body mass index is calculated as the ratio of weight (kg) to height (m2)

Litany the following data. compute the mean BMI, the standard deviation of BMI, the median BMI and the Q1 and Q3. Are there outliers in the distribution of BMI? Justify your answer using Turkey fences.
25 27 30 33 76 28 38 41 24 32 35 49

Question 4:

1. the cumulative incidence of AF in men and in women (combined)
2. the odds of developing AF among men
3. the relative risk of AF incidence comparing men to women
4. the odds ratio of AF comparing men and women

Attachment:- practice questions.rar