An experimental investigation of reactivity to ecological momentary assessment frequency among adults trying to quit smoking

作者：McCarthy Danielle E^*; Minami Haruka; Yeh Vivian M; Bold Krysten W

来源：Addiction, 2015, 110(10): 1549-1560.

DOI：10.1111/add.12996

• Ecological momentary assessment
• reactivity
• self-monitoring
• smoking cessation

AimsEcological Momentary Assessment (EMA) captures real-time reports in subjects' natural environments. This experiment manipulated EMA frequency to estimate effects on abstinence and peri-cessation subjective experiences.
DesignIn this randomized trial, subjects had an equal chance of being assigned to low-frequency (once) or high-frequency (six times) daily EMA for 4weeks (1week pre- and 3weeks post-cessation). Participants completed six office visits over 5weeks and 6- and 12-week follow-up telephone interviews.
SettingCommunity participants were recruited from central New Jersey, USA.
ParticipantsOne hundred and ten adult daily smokers seeking to quit smoking were included in intent-to-treat analyses of tobacco abstinence; 94 were available for secondary analyses of peri-cessation subjective ratings.
MeasurementsPrimary outcomes were cessation (abstaining at least 24hours within 2weeks of attempting to quit) and prolonged abstinence (no relapse between weeks 2 and 12 post-quit). Secondary outcomes were mean levels and growth in ratings of cigarette craving, affect and quitting motivation and self-efficacy.
FindingsEMA frequency was unrelated to cessation (odds ratio=1.367, 95% confidence interval=0.603-3.098) or prolonged abstinence (odds ratio=1.040, 95% confidence interval=0.453-2.388) in intent-to-treat analyses. High-frequency EMA was associated with lower craving (B=-0.544, standard error (SE)=0.183, P=0.004, anxiety (B=-0.424, SE=0.170, P=0.015), anger (B=-0.474, SE=0.139, P=0.001), hunger (B=-0.388, SE=0.170, P=0.025) and positive affect (B=-0.430, SE=0.196, P=0.03).
ConclusionsIn smokers trying to quit, more frequent ecological momentary assessment self-monitoring results in lower craving, anxiety, anger, hunger and positive affect. It is not clear whether this translates into higher rates of smoking abstinence.

• 出版日期2015-10