1,369
Participants
Start Date
August 17, 2016
Primary Completion Date
November 27, 2017
Study Completion Date
November 27, 2017
intensive cessation message
Mobile phone-based text message （three to five messages per day） interventions ('Happy Quit') for smoking cessation for 12 weeks with 24 week follow up.
Not intensive cessation message
Mobile phone-based text message （three to five messages per week） interventions ('Happy Quit') for smoking cessation for 12 weeks with 24 week follow up.
Purdue University
OTHER
Johns Hopkins Bloomberg School of Public Health
OTHER
Central South University
OTHER