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Using EMA Data to Examine Negative Affect and Craving During a Quit Attempt Megan E. Piper, Ph.D. Assistant Professor Center for Tobacco Research & Intervention Department of Medicine UW School of Medicine and Public Health
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Research Aims To examine the patterns of negative affect and craving pre- and post-quit – Withdrawal dimensions include average intensity, variability/volatility and trajectory (Piasecki et al. 1998; Piasecki et al. 2003a; Piasecki et al. 2000) To examine how temptation events influence negative affect and craving – Deprivation can enhance cue reactivity, which may influence smoking motivation (Acri and Grunberg 1992; Gloria et al., 2009; McCarthy et al. 2006; McClernon et al., 2009; Shiffman et al. 2006; Shiffman et al. 1996; Spiga et al. 1994; cf Perkins 2009a)
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Research Aims To examine how withdrawal parameters and reactivity to temptation events are related to short-term cessation success
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Recruitment and inclusion/ exclusion criteria Recruited in Madison and Milwaukee, WI – TV, radio and newspaper advertisements, community flyers – Earned media Inclusion criteria: – Smoking ≥ 10 cigs/day for the past 6 months – Motivated to quit smoking Exclusion criteria: – Medications contraindicated for bupropion – Consuming ≥ 6 alcoholic beverages 6-7 days/week – Self-reported history of psychosis or bipolar disorder
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CONSORT figure N = 8526 Expressed interest n = 1418 Declined n = 2010 Unreachable n = 2027 Failed screen n = 3153 Passed phone screen n = 1331 Withdrew n = 1504 Randomized n = 318 Excluded Lozenge n = 260 Patch n = 261 Bupropion SR n = 266 Patch + Lozenge n = 267 Bupropion SR + Lozenge n = 261 Placebo n = 189
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Study participants N = 1504 (58.2% women) Ethnicity – 1258 (83.9%) White – 204 (13.6%) African-American – 42 (2.8%) parents of Hispanic origin 21.9% had a 4-year college degree Mean age = 44.67 (SD = 11.08) Mean cigs. smoked/day = 21.43 (SD = 8.93) Mean number of quit attempts = 5.72 (SD = 9.65)
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Weeks TQD Year 3Year 2Year 16 mo. V9V10V11V12 Information Session Orientation V8V7V6V5V4 V3 - Randomization V2V1 1248-2-3-4 BaselineTreatment*Follow-up Study timeline *Counseling and medication EMA period
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EMA Protocol Palmtop computers 4 prompts per day – Waking – 2 random during the day (separated by at least 1 hour) – Prior to going to bed 2 weeks pre-quit and 2 weeks post-quit – Analyzed data 10 days pre-quit and 10 days post- quit
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EMA Questions – Every prompt In the last 15 minutes rate: – Negative and positive affect – Craving – Hunger – Difficulty Concentrating – Restlessness Smoking since last prompt
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EMA Questions – Every prompt Self-efficacy Cessation fatigue Motivation to work hard to quit Positive smoking expectancies Temptation events and coping
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EMA Questions – Evening Prompt Cessation medication usage Alcohol and caffeine use Menstruation Stressor occurrence and coping Pleasurable daily activities
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EMA Compliance Of the total 80 assessments (4 times/day for 20 days): – Mean prompts completed = 50.9 – Median prompts completed = 53 Missing data was significantly positively related to 8-week relapse – OR = 1.03, p <.001 When analyses controlled for missing data, the results were similar
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Mean Negative Affect
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Mean Daily Craving
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Negative Affect for 4 Participants
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Craving for 4 Participants
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Temptation “Since your last report, did anything happen that made you want to smoke?” Pre-quit (18.9%) vs. Post-quit (19.5%) – Χ 2 = 3.69, p =.055 Examine craving and negative affect with a general linear model looking at pre-quit vs. post-quit and temptation event vs. no temptation event
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Temptation and Negative Affect F(1, 63340) = 7.85 p =.005
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Temptation and Craving F(1, 63340) = 105.17 p <.001
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Withdrawal and Cessation 8-week CO-confirmed point-prevalence abstinence Controlling for treatment and post-quit smoking – Treatment: 0 = placebo, 1 = monotherapy, 2 = combination therapy – Smoking: 0 = no smoking, 1 = < 1 cig/day, 2 = 1 or more cig/day
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Withdrawal and Cessation Change (post-pre) in: – Mean level – Frequency of extreme reports – Variability (SD) – Mean level when temptation event reported – Mean level when no temptation event reported
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Univariate Prediction of 8-week Abstinence – Negative Affect Withdrawal measureWaldp-valueOROR 95% CI Change in negative affect mean 8.73.003.82.72,.94 Change in negative affect SD2.83.09.83.67, 1.03 Change in percent of negative affect reports greater than 4 1.81.18.99.97, 1.01 Change in negative affect mean when faced with a temptation event.92.34.95.86, 1.05 Change in negative affect mean when not faced with a temptation event 4.77.03.85.74,.98
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Univariate Prediction of 8-week Abstinence – Craving Withdrawal measureWaldp-valueOROR 95% CI Change in craving mean19.58<.001.89.84,.93 Change in percent of craving reports greater than 7 9.41.002.99.988,.997 Change in craving mean when faced with a temptation event 6.19.01.93.88,.985 Change in craving mean when not faced with a temptation event 14.38<.001.90.85,.95
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Best-Fitting Multivariate Model to Predict 8-week Abstinence Withdrawal measureWaldp-valueOROR 95% CI Change in craving mean 6.15.01.90.83,.98 Change in negative affect mean 12.92<.001.62.48,.80 Change in negative affect mean when faced with a temptation event 5.43.021.181.03, 1.37
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Addressing Smoking During EMA Considerable post-quit smoking is required to reduce withdrawal symptoms (Piasecki et al., 2003) 80% reported smoking <1 cig/day in the first 10 days – 34% reported no smoking Results were consistent when removed participants who reported smoking 5 or more cigs/day on average for the 10 days post-quit (n = 47)
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Conclusions Relative to negative affect, craving reports are more intense, on average, more variable and are more likely to be extreme – 20% of craving reports were greater than 1 SD – 1.6% of negative affect reports were greater than 1 SD Craving returns to pre-quit levels by 10 days but negative affect does not
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Conclusions Quitting results in reactivity (i.e., increased negative affect and craving) when confronted with temptation events Cessation success is related to: – Various withdrawal components: negative affect, craving and reactivity to temptation events – Various withdrawal parameters: mean level, extreme reports
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Acknowledgements Piper, M. E., Schlam, T. R., Cook, J. W., Sheffer, M. A., Smith, S. S., Loh, W.-Y., Bolt, D. M., Kim, S.-Y., Kaye, J. T., Hefner, K. R., & Baker, T. B. (2011). Tobacco withdrawal components and their relations with cessation success. Psychopharmacology 216, 569-578. PMCID: PMC3139774 Staff and students at the Center for Tobacco Research and Intervention NIH grants: P50 DA019706 (NIDA), M01 RR03186 (General Clinical Research Centers Program), 1UL1RR025011 from the Clinical and Translational Science Award (CTSA; Piper), K08DA021311 (Cook), 1K05CA139871 (Baker) and U. S. Army Research Office grant W911NF ‑ 09 ‑ 1 ‑ 0205 (Loh)
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Negative Affect Assessment PostQuit - Lozenge I have been TENSE or ANXIOUS. NextPrevious Disagree!! Agree!! PostQuit - Lozenge I have been TENSE or ANXIOUS. NextPrevious Disagree!! Agree!!
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