Application interface: |
The button stays green when you are done. I was going to sit here and wait for it to go back to red. |
It should go back to red, since that means the test is done. |
The starting button is now blue, which changes to yellow (transmission), then green (successful transmission), and changes back to blue when test is complete. |
Why is the text on the colored buttons the same? |
The wording for the yellow button should say “transmitting” and the wording for the green button should say “test complete” |
The text has been updated to state the progress of the data transmission. |
How do I contact [the study coordinator] if I need help? |
Include the study coordinator's phone number on the instruction page |
The phone number for the study coordinator is now listed as an icon on the cell phone home page (and identified in an user's guide), as well as in all instructions. |
Data transmission: |
Cell phone reception out here is not good. |
You have to have [specific cell provider] out here! |
Note: The phones were using the local provider that had the best coverage but should be considered for studies in different regions. |
When you're out of service the phone will shut down to preserve battery life and transmit data later? |
Provide a car charger |
Future studies will include optional car chargers |
It took a long time for the spirometer to display results |
Write in the instructions that it can take up to 10 seconds for the spirometer to display data |
Instructions updated to clarify that there may be a lag time between when the test finishes, and when results are displayed |
Usability of the device: |
How do you reset the spirometer to take another test? |
On the app, add “Step 5: click the right arrow on the spirometer to reset.” |
See below for changes to written instructions |
Simplify terminology |
Change the instructions to read “breath in (inspire) and breath out (expire)” |
See below for changes to written instructions |
Tracking spirometry tests |
Include a progress bar |
A progress bar was added to show how many tests have been completed. |
ELF Tracker instructions: |
Terminology not consistent, not sure what to do if a mistake is made |
Include a trouble-shooting guide, and an instruction sheet to show how to use the cell-phone, geared towards new cell-phone users. |
“The ELF Tracker: A Users Guide” was created showing step-by-step instructions on how to navigate the cell phone, as well as how to use the app and how to set and change the scheduled spirometry reminders. |