Table 1.

Summary of the Three Surveys Used in the Study, Including a Description and Main Themes of Each Survey

Survey	Description	Themes
NASA – Task Load Index (NASA-TLX)	The survey measures and conducts a subjective mental workload (MWL) assessment of a participant after they have completed a task on a scale of 1-20.	1. Mental Demand 2. Physical Demand 3. Temporal Demand 4. Performance 5. Effort 6. Frustration
System Usability Scale (SUS)	The survey is used to assess the general usability of the system using a 5-point Likert scale.	1. Complexity 2. Ease of Use 3. System Support 4. Cumbersome to Use 5. Confidence Using the EHR 6. Need for Training
Questionnaire of User Interface Satisfaction (QUIS)	The questionnaire asks the user to rate the interface in areas such as ease of use, consistency, system capability, and learning. The questions relate to human-computer interfaces and responses are normally measured on an ascending scale from 1 to 10.	1. Overall reaction to the EHR 2. Screen Interface 3. Terminology and System Information 4. Learnability (operating the system, remembering functions, etc.) 5. System Capabilities (speed, reliability, etc.)