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Table 1 6-item survey of usefulness and ease of use showing the original constructs and the final modified wording

From: Perceived usefulness and ease of use of fundoscopy by medical students: a randomised crossover trial of six technologies (eFOCUS 1)

Scale items Original construct Modified wording
Usefulness
1 Work more quickly Using the device in my clinical placements would enable me to accomplish tasks more quickly
2 Job performance Using the device would improve my clinical performance
3 Increase productivity Using the device in my clinical placement would increase my productivity
4 Effectiveness Using the device would enhance my effectiveness
5 Makes job easier Using the device would make it easier to do my clinical placements
6 Useful I would find the device useful in my clinical placements
Ease of Use
1 Easy to learn Learning to operate the device would be easy for me
2 Controllable I would find it easy to get the device to do what I want it to do
3 Clear & understandable My interaction with the device would be straightforward
4 Flexible I would find the device to be flexible to use in different clinical scenarios
5 Easy to become skillful It would be easy for me to become skillful at using the device
6 Easy to use I would find the device easy to use