Table I.

Cumulative Retention at Each Post-Condition Survey by Recruitment Source (N = 650)

Recruitment Source	Treatment Group		Control Group
	Email (%)	Banner Ad (%)	Email (%)	Banner Ad (%)
Participants enrolled at Baseline (N)	71	266	62	251
Post-Condition Survey	95.8	78.2	100.0	99.2
3-month Follow-up*	98.5	96.2	100.0	92.8
6-month Follow-up	90.1	80.1	98.4	89.2
9-month Follow-up	91.5	79.7	96.8	88.4
12-month Follow-up	90.1	79.7	98.4	86.5

^*The overall N for each survey is 650 except for the 3-month survey, where N = 587.