(You must type the whole statement.)

Now show your scratch paper (both front and back) to the camera on your computer. Do it slowly. After you show your paper, you can exit the exam.

When reading about a new over the counter flu test on the market it was deemed to have 80% sensitivity and 60% specificity.  Which of the following statements would best describe the validity of the new flu test (Select all that apply)?

You are looking to determine if there is a difference in the reported frequency of PA students and non PA students donating blood. You ask 50 PA students and 50 non PA students if they have donated blood in the past year. Which test should you run to answer your question?

You are planning on running a multiple linear regression for your analysis and you have the catagorical variable of year in school (1= freshamn, 2= sophmore 3= Junior and 4= Senior). How should this varible be included in the regression model?

  A researcher wants to see if the Oswestry Low Back Disability Index is a good predictor of the days a person is unable to work after sustaining a herniated disc in their lumbar spine.  In orthopedics the Oswestry is a patient reported outcome that determines the level of disability. Scores range from 0% – 100% (the higher the score indicates a higher level of disability).  Based on the output below, write a statement of the predictive value of the Oswestry for days unable to work. (Be sure to include the statistic (2 points)).  Additionally, write what the quality of the predictive value is (2 points).

A researcher is trying to determine if there is a significant difference between 3 different drugs and subjects pain.  A higher score indicates higher percieved patient pain. Is there a significant difference between patinets percieved pain (2-points)? Which drug would you recommend for pain control (2 points)? Median pain perception of Drug A = 6, Drug B= 5.5, and Drug C = 4. 

The hospital you are working at would like to determine how accurate, at detecting hypoxia during motion, with 4 different types of pulse oximeters. 10 subjects are assessed with the 4 instruments during motion and simultaneous arterial blood samples are taken to claculate oxygen saturation. Which statistical test should be run to determine accuracy between each pulse oximeter and the oxygen saturation?

You are creating a survey to assess PA knowledge of prenatal care and are sending your survey to 7 PAs that currently work in OBGYN offices and are asking for feedback on your questions. Which type of validity are you trying to assess?

When running a mulitple linear regression it is improant to run a VIF test to avoid which problem?