1. Read this article by Nieto and then consider the following questions.

• What type of study is this?

• What do the p-values in Table 1 represent?
 ? What types of tests were used for each of those variables?
 ? Was the test used a reasonable selection for each of these test?

• How was the relationship between SDB and blood pressure values analyzed?
 ? Is this a reasonable analysis?
 ? How would you interpret the results from this analysis?

• How was the relationship of SDB categories to hypertension measured?

• Interpret the results of this analysis.
 ? Is this analysis reasonable for the type of conclusions that were attempted?
 ? What type of sensitivity analysis would you have implemented, to make sure that the models used are reasonable?

2. Use this article by Holmes to answer to the following questions.

• What is the target population of this study?
 ? What is the actual sample that was chosen?

• What type of analysis was done in order to identify the relationship between physical activity and survival?
 ? Is this model reasonable for this analysis?
 ? Are the assumptions of the model met?

• What type of analysis would you have asked for as a reviewer of this paper?

• What do the p-values in Table 2 suggest?

• What can you learn from Figure 1?

• How would you interpret the effect of physical activity on 5-year recurrence?
Do you trust this paper? Why or why not?