Table 5 Questionnaire

Primary objective questions:

- Does the app provide an ease-of-use graphical interface?

Yes() No()

- Are the app descriptions of examinations compatible with descriptions

of laboratorial test results?

Yes() No()

- Are the features of the app useful?

Yes() No()

- Are the features of the app necessary?

Yes() No()

- Are the results of blood pressure monitoring clearly presented?

Yes() No()

- Are the results of blood glucose monitoring clearly presented?

Yes() No()

- Are the results of creatinine monitoring clearly presented?

Yes() No()

- Are the results of risk analysis clearly presented?

Yes() No()

- Is the information about risk analysis results enough?

Yes() No()

Sample of secondary questions:

- Are the test results easy to input in the app?

- Do you know what the CKD biomarkers mean?

- Do you understand the risk evaluation results?

- Do you understand what the CKD classification mean?