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Acceptability, Validity, and Engagement With a Mobile App for Frequent, Continuous Multiyear Assessment of Youth Health Behaviors (mNCANDA): Mixed Methods Study

Acceptability, Validity, and Engagement With a Mobile App for Frequent, Continuous Multiyear Assessment of Youth Health Behaviors (mNCANDA): Mixed Methods Study

Incentives in the threshold schedule were US $2 per submission with US $5 to achieve a 90% response rate and an additional US $10 bonus for a 100% response rate during a set 8-week period. By comparison, the ramped schedule increased the incentive (approximately US $0.4) for each consecutive completed assessment in an uninterrupted series of submissions until a ceiling at US $4 was reached.

Kevin M Cummins, Ty Brumback, Tammy Chung, Raeanne C Moore, Trevor Henthorn, Sonja Eberson, Alyssa Lopez, Tatev Sarkissyan, Kate B Nooner, Sandra A Brown, Susan F Tapert

JMIR Mhealth Uhealth 2021;9(2):e24472