Table 1.
Study assessments
| Assessment | Baseline | During exposure to interventions | Day 90 follow-up (via text msg) | Day 97 follow-up (via survey) |
Description |
| Demographics | X | X | Age sex, race, ethnicity, preferred language, insurance status, etc. | ||
| Testing (primary outcome) | X | X | Proportion of study participants who use an at-home COVID-19 test during the course of the study. | ||
| Number of tests used | X | X | Self-reported number of tests used by each study participant who requested a test. | ||
| Vaccination status | X | X | COVID-19 vaccination status according to state immunisation registry | ||
| NIH RADx-UP CDE data elements (tier 1) | X | Comprehensive questionnaire (234 items) including demographics, COVID-19 testing, symptoms, health status, social determinants of health, etc. | |||
| Implementation outcomes | |||||
| Reach-engage testing | X | Proportion of participants who are offered at-home testing and reply to the message or launch the chatbot | |||
| Reach-engage frequency | X | Number of times a participant replied to a message offering at-home testing or launched the chatbot | |||
| Reach-accept testing | X | Proportion of participants who are offered at-home testing and reply accepting | |||
| Reach-engage frequency | X | Number of times a participant replied to a message/chatbot requesting at-home testing | |||
| PN-request | X | Proportion of participants in the PN condition who request patient navigation | |||
| PN-request frequency | X | Number of times a participant requested to speak with a patient navigator | |||
| PN-engage | X | Proportion of participants in the PN condition who talk to a patient navigator | |||
| PN-engage frequency | X | Number of times a participant spoke with a patient navigator | |||
| Opt-out | X | Proportion of participants who opted-out | |||
| Chatbot use | |||||
| Chatbot session length | X | Amount of time spent using the chatbot in a session | |||
| Chatbot timeout | X | Proportion of chatbot sessions that timed out without reaching an endpoint (eg, close chatbot window, request test, request to talk to patient navigator) | |||
| Chatbot actions | X | Number of chatbot topics clicked per session | |||
| Chatbot test request only | X | Proportion of chatbot session in which the only action was requesting a test | |||
| Chatbot coverage | X | Proportion of chatbot contents that are accessed per session | |||
| Chatbot topics | X | Proportion of sessions in which a specific chatbot topic is accessed | |||
CDE, Common Data Element; NIH, National Institutes of Health; PN, patient navigation; RADx-UP, Rapid Acceleration of Diagnostics-Underserved Populations.