Page Comparison

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• Opt-in by signing ICF that notes SMS/ text messaging communications will be used

• Opt-in by online form

  • Example:

    Image RemovedImage Added

• Opt-in by texting a keyword in the FIRST message sent to the participant 

  • This works well for studies that are using SMS as their first point of contact or for recruitment purposes.

  • The first text sent to the potential participant must host both the opt-in and opt-out language.

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