Metric | Calculation | Comparisons | Pilot | Related secondary outcome |
---|---|---|---|---|
Primary outcome | ||||
Smoking cessation rate | Total number of people who relapsed / total number of people in the group at 60 days, 120 days, and 180 days of their quitting date | • User engagement at an individual level • User engagement at an aggregated level • User mobile app usage • User quitting attempts • User lifestyle feedback • Physical activity | • Clinical • Public | System influence on smoking cessation and app influence on users physical activity levels |
Secondary outcomes | ||||
User engagement at an individual level | Messages read by the user / total number of messages sent to the user | • Smoking cessation rate | • Public • Clinical | System influence on smoking cessation |
Engagement at an aggregated level | Mobile application rolling retention, session length distribution, session frequency, sessions per user, return rate | • Smoking cessation rate | • Public • Clinical | System influence on. smoking cessation. |
User quitting attempts | Number and date of quitting attempts | • Smoking cessation rate | • Public • Clinical | System influence on smoking cessation |
User app behavior | Time spent per app section | • User message ratings • User satisfaction with messages | • Public • Clinical | App usage. and opinions on messages the users received |
User satisfaction with messages | Satisfaction questionnaire | • User mobile app usage • Mobile app behavior • User message ratings | • Clinical | App usage and opinions on messages the users received |
User message ratings | Users’ votes for each message on a 5-star scale | • User app behavior | • Public • Clinical | App usage and opinions on messages the users received |
User lifestyle feedback | Comparison of changes in user lifestyle (at baseline and after 6 months) through the questionnaires: EQ-5D-5 L, IPAQ for physical activity, and SF-36 | • Smoking cessation rate • Mobile app usage | • Clinical | App influence on users physical activity levels |
Physical activity | Total time (min) of activity per user, retrieved by GoogleFit | • Smoking cessation rate • Mobile app usage | • Public • Clinical | App influence on users physical activity levels |