QUESTION 1

We discussed Test Use Cases for testing EHRs and how the usability can be assessed withperformance measures.

Here's a shortened version of a test case:

A 62-year-old female patient named Julie is in your clinic for a follow-up on her hypertension. You review her medications with her to confirm that they are up to date.First, go to her medication list and verbally state the name and strength of the first medication on Julie's medication list. [The correct answer is Lipitor, 20mg.) Julie tells you that her prescription is 40mg, not 20mg. Second, in her medication list,change her prescription from 20mg to 40mg. Then, Julie reports that she is taking Centrum Silver for Women, ibuprofen for regular aches and pain, and Claritin for allergies.Third, add these drugs to her medication list.

Questions:

a) Choose ameasure of performance to evaluate the user's performance on this task. It could be for one of the steps or the entire case. Describespecifically what you would measure. It should be one of the performance measures we discussed in class.

b) Whataspect of usability are you assessing with this measure? (For examples, error prevention, efficiency, accuracy, cognitive difficulty, satisfaction, etc.)

QUESTION 2

Improve an EHR:

Go tohttps://ehrseewhatwemean.org/videos/ Scroll down to"Challenging Visual Display" and watch the first video, called"Challenging Visual Display, Tylenol Example 1." Watch the video before answering the questions. Then, look at the questions and run through the video again.

a) We discussed "backtracking" as a measure of performance. How many search attempts does it take the physician to find the correct Tylenol prescription?

b) The video shows the physician's cursor movements. In a sentence, how would you describe the movements? What does this tell you about the physician's experience on this screen?

c) The narrator makes the point that the screen has a "clutter" problem. In this case, based on the challenges the physician had, how could the system be modified to reduce the clutter issue?

d) Finally, you'll see that some of themany choices on the screen have very similar names and therefore more easily confused with each other. Also, some of the many choices are clearly not appropriate for this patient, but many of the choices could be. Think back to our discussion about the principles of visual design we discussed a few weeks ago. Aside from the "clutter" issue, how could the items of the screen be modified to makemore relevant options easier to find? This might involve a modification of some items' appearance, or where they appear on the screen, etc.