FIGURE 1—

Study CONSORT Diagram: Oral Health for Life (OH4L) Trial, United States, 2015–2017

^aExcludes people known to be ineligible per quitline intake data (n = 1072).

^bPrimary reasons were no Internet access (n = 2283), saw dentist in previous 6 months (n = 1051), lost all natural teeth (n = 693), previous diagnosis with psychosis (n = 373), no text-messaging capacity (n = 351), unwilling to discuss oral health (n = 303), dental appointment already scheduled (n = 233), and planning to move in next 6 months (n = 170).

^cIndividuals ineligible and mistakenly randomized. Immediately removed from sample, not offered treatment, and not followed for data collection. Reasons for ineligibility were not mutually exclusive and included enrolled in another study already (n = 1), lived with an enrolled participant (n = 1), did not own cell phone or could not receive text messages (n = 2), already quit smoking (n = 4), and not eligible per state’s change to eligibility criteria for multicall quitline program (n = 12).

^dLost to follow-up includes the following reasons: unable to be reached, refused, deceased, or too ill to participate at contact.