Usabiity

The ISO 9241-11 definition of Usability refers to the The effectiveness, efficiency, and satisfaction with which specified users achieve specified goals in particular environments (ISO 9241-11).

Effectiveness The accuracy and completeness with which specified users can achieve specified goals in particular environments.
Efficiency The resources expended in relation to the accuracy and completeness of goals achieved.
Satisfaction - The comfort and acceptability of the work system to its users and other people affected by its use.

Summative testing requirements for the 2015 Cures Update Edition

Summative usability testing is an industry standard usability methodology (see http://bit.ly/13WYqTU ) During the testing a trained user experience professional works with the EHR vendor to create a series of representative tasks and then measures the amount of time it takes to complete the task (time on task), how many and what type of errors occur (error rates), and satisfaction with the task interaction (user satisfaction). The results —as measured by things like task times, assisted and un-assisted completion rates and standardized satisfaction scores --can be benchmarked against current industry standards.

Summative testing for the 2015 Cures Update certification needs to test the following 9 areas:

  • Section 170.315(a)(1) Computerized provider order entry – medications
  • Section 170.315(a)(2) Computerized provider order entry – laboratory
  • Section 170.315(a)(3) Computerized provider order entry – diagnostic imaging
  • Section 170.315(a)(4) Drug-drug, drug-allergy interaction checks
  • Section 170.315(a)(5) Demographics
  • Section 170.315(a)(6) Problem list
  • Section 170.315(a)(14) Implantable device list
  • Section 170.315(b)(2) Clinical information reconciliation and incorporation
  • Section 170.315(b)(3) Electronic prescribing