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Learn More About Receiving Text Messages in this Study

You may decide to opt-in to receive text messages from our study during the e-consent process (at this link).

Message frequency may vary based on survey activity. The text message will contain a link to the survey, and will also give you the option to respond to the survey via text message. If you decide to take the survey via text message, there will be multiple follow-up text messages.

The text message service is currently only available to study participants in the US. Message and data rates may apply.


Study Center Contact Information
Any concerns regarding the text messages can be sent to You can also reach our study team at 919-668-9798. Customer care contact information. You will also have the option to reply with “HELP” for help.


Opt-out instructions
You may opt-out of receiving text messages by replying “STOP” to opt-out.


List of supported carriers and Carrier liability statement
We are able to deliver messages to the following mobile phone carriers: Major carriers: AT&T, Verizon Wireless, Sprint, T-Mobile, MetroPCS, U.S. Cellular, Alltel, Boost Mobile, Nextel, and Virgin Mobile. Minor carriers: Alaska Communications Systems (ACS), Appalachian Wireless (EKN), Bluegrass Cellular, Cellular One of East Central IL (ECIT), Cellular One of Northeast Pennsylvania, Cincinnati Bell Wireless, Cricket, Coral Wireless (Mobi PCS), COX, Cross, Element Mobile (Flat Wireless), Epic Touch (Elkhart Telephone), GCI, Golden State, Hawkeye (Chat Mobility), Hawkeye (NW Missouri), Illinois Valley Cellular, Inland Cellular, iWireless (Iowa Wireless), Keystone Wireless (Immix Wireless/PC Man), Mosaic (Consolidated or CTC Telecom), Nex-Tech Wireless, NTelos, Panhandle Communications, Pioneer, Plateau (Texas RSA 3 Ltd), Revol, RINA, Simmetry (TMP Corporation), Thumb Cellular, Union Wireless, United Wireless, Viaero Wireless, and West Central (WCC or 5 Star Wireless). ***Carriers are not liable for delayed or undelivered messages***


You can find our Privacy Policy here.