Table 2.
Content and face validity testing of items considered for the Community Health Worker mHealth Usability and Acceptability Assessment Tool.
| Item | Content validity testing with content expert panela | Face validity testing with CHWsb,c | |||
|
|
Clarity I-CVId | Relevance I-CVI | Clarity FVIe | Comprehension FVI | |
| “The app is easy to use.” | 1 | 1 | 1 | 1 | |
| “It is easy for me to learn to use the app.” | 0.9 | 1 | 1 | 1 | |
| “The navigation is consistent when moving between screens.” | 0.6 | 0.8 | —f | — | |
| “I can use all the functions (such as entering information, responding to reminders, viewing information) in the app.” | 0.6 | 0.9 | — | — | |
| “Whenever I make a mistake on the app, it is easy and quick to correct it.” | 0.9 | 1 | 1 | 1 | |
| “I like the interface of the app.” | 0.9 | 0.9 | 1 | 1 | |
| “The information in the app is well organized, so I can easily find the information I need.” | 0.9 | 1 | 1 | 1 | |
| “The app does a good job of letting me know my progress.” | 0.9 | 0.7 | — | — | |
| “The time it takes to use this app works well for me.” | 0.9 | 1 | 1 | 1 | |
| “Overall, I am satisfied with this app.” | 1 | 0.9 | 1 | 1 | |
| “The app improves my ability to deliver healthcare services.” | 1 | 1 | 1 | 1 | |
| “The app helps me manage my patients’ health effectively.” | 0.9 | 0.9 | 1 | 1 | |
| “This app has all the functions and capabilities I expected it to have.” | 1 | 1 | 1 | 1 | |
| “I can use the app even when the Internet connection was poor or not available.” | 0.8 | 1 | 0.8 | 0.8 | |
| “This app would be useful for my home visits to women after cesarean section.” | 1 | 0.9 | 1 | 1 | |
| “It is easy for me to log into the app with my username and password.” | 1 | 1 | 1 | 1 | |
| “It is easy for me to find the correct patient using the patient name ID.” | 1 | 1 | 1 | 1 | |
| “It is easy for me to take or retake a picture of the wound using the app.” | 1 | 1 | 1 | 1 | |
| “It is easy for me to read the recommendations given by the app.” | 1 | 1 | 1 | 1 | |
| “It is easy for me to communicate with women when using the app.” | 0.9 | 1 | 1 | 1 | |
| “I feel comfortable using the app during home visit for follow up of women who delivered by caesarean section.” | 1 | 1 | 1 | 1 | |
| “It is easy for me to understand how to use the app.” | 1 | 0.8 | 1 | 1 | |
| “The app is a good fit for the way I conduct visits to women after cesarean section.” | 0.8 | 0.9 | 1 | 1 | |
| “The app will save me time during home visits to women who delivered by cesarean section.” | 1 | 1 | 1 | 1 | |
| “I think using this mHealth app will be more helpful than hurtful.” | 0.9 | 0.9 | 1 | 1 | |
aIn total, 10 content experts from the study team participated in content validity testing. Items with a clarity item content validity index or relevance item content validity index of <0.78 were removed from the final tool.
bIn total, 10 community health workers participated in face validity testing. Items with a face validity index of <0.60 were removed from the final tool.
cCHW: community health worker.
dI-CVI: item content validity index.
eFVI: face validity index.
fNot applicable.