Pivot Breath Sensor Human Factors and Usability Study

Primary outcomes

1. Human Factors - User Performance in Use Scenarios Assessment With Observer Ratings

   Time frame: Each study session was completed on a single day, for up to 60 minutes. Device set up was assessed at about 5 minutes in. Device use was assessed at about 10 minutes in. Interpretation of results was assessed at about 15 and 20 minutes in.

   User performance of participants in intended use scenarios will be assessed at a single visit. Participants will be observed if they can set up the device, use the device, and interpret results. Observer ratings include 'Successful' and 'Unsuccessful'. Specific attention will be given to assess if any harms can occur from observed use errors.

   'Successful' = user was able to complete the task safely and effectively. Unsuccessful' = user was unable unable to complete the task independently or did not complete the task safely and effectively.

   For each participant, the single visit includes the consent process, entry into the study, the study session, and conclusion of the study. The study session is completed on a single day requiring up to 60 minutes.

   Observations are made throughout the study session. Assessments for individual tasks will take approximately 1 minute and assessments will be made over the study session which can last up to 60 minutes.

2. Human Factors - User Documentation Assessment With Observer Ratings

   Time frame: Each study session was completed on a single day, for up to 60 minutes. The user documentation assessment occurred at approximately 30 minutes into the study session.

   Participant understanding of user documentation will be assessed at single visit. User documentation includes packaging information, quick start guide and user manual. Observer ratings include 'Successful' and 'Unsuccessful'.

   'Successful' = user was able to complete the task safely and effectively. Unsuccessful' = user was unable unable to complete the task independently or did not complete the task safely and effectively.

   For each participant, the single visit includes the consent process, entry into the study, the study session, and conclusion of the study. The study session is completed on a single day requiring up to 60 minutes.

   Observations are made throughout the study session. Assessments for individual tasks will take approximately 1 minute each. The User documentation assessment portion of the study session will last up to 30 minutes.

3. Human Factors - Subjective Feedback Questionnaire

   Time frame: Each study session was completed on a single day, for up to 60 minutes. The subjective feedback questionnaire was administered at approximately 40 minutes into the study session.

   Subjective feedback focusing on any concerns on using device will be assessed at single visit. Participants will answer with a Yes or No to the questions.

   For each participant, the single visit includes the consent process, entry into the study, the study session, and conclusion of the study. The study session is completed on a single day requiring up to 60 minutes.

   Subjective feedback focusing on any concerns prior to the conclusion of the study session. Subjective feedback questions will take approximately 1-3 minutes each. The Subjective feedback portion of the study session will last up to 5 to 15 minutes.

4. Human Factors - Participant Feedback Using Rating Scale

   Time frame: Each study session was completed on a single day, for up to 60 minutes. Participant feedback using a rating scale was provided at approximately 50 minutes into the study session.

   Participant will be asked to provide ratings on the following:

   • How would you rate the ease or difficulty using the device?
   • How clear or unclear was the Quick Start Guide?
   • How clear or unclear was the Packaging?
   • How clear or unclear was the User Manual?
   • How easy or difficult was it to understand and interpret the test results?

   The participant will use the following rating scale (higher score = better outcome):

   5 - Very Easy 4 - Easy 3 - Neither Easy nor Difficult 2 - Difficult

   1 - Very difficult

   For each participant, the single visit includes the consent process, entry into the study, the study session, and conclusion of the study. The study session is completed on a single day requiring up to 60 minutes.

   Participant will provide the ratings prior to the conclusion of the study session. Participant assessment with questionnaire rating scales will take approximately 1-2 minutes each.