Chapter 11 368 Control Intervention n 14 17 Incentives Kirby discontinuity score mean (SD) 13.4 (7) 13.9 (7) Present bias Yes 8 (57) 9 (53) No 6 (43) 8 (47) Willing to pay a deposit Yes 8 (57) 13 (77) No 6 (43) 4 (24) Advice given Standard scheme 2 (12) Descending scheme 2 (12) Ascending scheme 0 (0) Deposit scheme 13 (77) Deviated from advice Yes 3 (18) No 14 (82) Scheme choice Standard scheme 3 (18) Descending scheme 2 (12) Ascending scheme 2 (12) Deposit scheme 10 (59) *SASEQ = smoking abstinence self-efficacy questionnaire Incentives More than half of the participants were willing to pay a deposit; accordingly, the deposit scheme was advised for 13 out of 17 (76%) participants in the intervention arm (Table 2). Three out of the 17 participants deviated from personalized advice. These participants all recommended the deposit scheme but instead chose the standard scheme (n=1) or ascending scheme (n=2, Appendix II). Outcomes Overall, abstinence in both the treatment and control groups gradually declined over time (Figure 3). Twelve months after the completion of the smoking cessation program, 41% and 43% of the intervention and control groups, respectively, were continuously abstinent. Appendix IV reports the secondary outcomes. Table 1: Continued
RkJQdWJsaXNoZXIy MTk4NDMw