Table 1.

Description of measures used for qualitative evaluation of the app prototype throughout the 6-week pilot trial.

Measurement	Patients		HCPsa at baseline	Method of elicitation
	Baseline	Follow-up
Likeability, usefulness, areas lacking or suggestions, and usability	✓		✓	Semistructured talk-out-loud interview; see Multimedia Appendices 1 and 2 for patient and HCP qualitative interview guides, respectively, and Multimedia Appendices 3 and 4 for qualitative reports from qualitative interviews for patients and HCPs, respectively
Enhancing patient-HCP communication	✓		✓	Semistructured talk-out-loud interview; see Multimedia Appendices 1 and 2 for patient and HCP qualitative interview guides, respectively, and Multimedia Appendices 3 and 4 for qualitative reports from qualitative interviews for patients and HCPs, respectively
Increasing OAb knowledge	✓			Semistructured talk-out-loud interview; see Multimedia Appendices 1 and 2 for patient and HCP qualitative interview guides, respectively, and Multimedia Appendices 3 and 4 for qualitative reports from qualitative interviews for patients and HCPs, respectively
Improving OA self-management	✓			Semistructured talk-out-loud interview; see Multimedia Appendices 1 and 2 for patient and HCP qualitative interview guides, respectively, and Multimedia Appendices 3 and 4 for qualitative reports from qualitative interviews for patients and HCPs, respectively

^aHCP: health care provider.

^bOA: osteoarthritis.