Table A1.

Reasons for Study Ineligibility (n = 1,331)

Reasons for study ineligibility	% (n)
Number of study eligibility criteria not met
Did not meet one eligibility criteria	74.6 (993)
Did not meet two eligibility criteria	16.8 (224)
Did not meet three eligibility criteria	7.4 (99)
Did not meet four or more eligibility criteria	1.1 (15)
Reasons for ineligibility	(n = 1,798)a
Not planning on quitting in the next 30 days	44.9 (808)
Age (not between 18 and 25 years old)	18.1 (326)
Does not smoke six or more days per week	10.0 (179)
Does not smoke four or more cigarettes per day	9.7 (175)
Cell phone provider ineligible	7.9 (142)
Does not own cell phone	5.0 (90)
Do not have unlimited text messaging	3.1 (56)
Other	0.6 (11)
Unable to receive validation code	0.4 (8)
Knows someone else participating in the study	0.2 (3)

Note. Percentages may not add up to 100% due to rounding.

^aReasons for ineligibility were not mutually exclusive; therefore, a participant could be ineligible for more than one reason.