TY - JOUR KW - Adult KW - Affect KW - Buprenorphine/therapeutic use KW - Craving/physiology KW - Female KW - Humans KW - Male KW - Methadone/therapeutic use KW - Middle Aged KW - Narcotics/therapeutic use KW - Opiate Substitution Treatment KW - Opioid-Related Disorders/drug therapy/psychology KW - Outpatients KW - smartphone KW - Stress, Psychological/psychology KW - cocaine KW - craving KW - Ecological momentary assessment KW - Heroin KW - stress AU - K. L. Preston AU - W. J. Kowalczyk AU - K. A. Phillips AU - M. L. Jobes AU - M. Vahabzadeh AU - J. L. Lin AU - M. Mezghanni AU - D. H. Epstein A1 - AB - RATIONALE: Knowing how stress manifests in the lives of people with substance-use disorders could help inform mobile "just in time" treatment. OBJECTIVES: The purpose of this paper is to examine discrete episodes of stress, as distinct from the fluctuations in background stress assessed in most EMA studies. METHODS: For up to 16 weeks, outpatients on opioid-agonist treatment carried smartphones on which they initiated an entry whenever they experienced a stressful event (SE) and when randomly prompted (RP) three times daily. Participants reported the severity of stress and craving and the context of the report (location, activities, companions). Decomposition of covariance was used to separate within-person from between-person effects; r effect sizes below are within-person. RESULTS: Participants (158 of 182; 87%) made 1787 stress-event entries. Craving for opioids increased with stress severity (r effect = 0.50). Stress events tended to occur in social company (with acquaintances, 0.63, friends, 0.17, or on the phone, 0.41) rather than with family (spouse, -0.14; child, -0.18), and in places with more overall activity (bars, 0.32; outside, 0.28; walking, 0.28) and more likelihood of unexpected experiences (with strangers, 0.17). Being on the internet was slightly protective (-0.22). Our prior finding that being at the workplace protects against background stress in our participants was partly supported in these stressful-event data. CONCLUSIONS: The contexts of specific stressful events differ from those we have seen in prior studies of ongoing background stress. However, both are associated with drug craving. AD - Clinical Pharmacology and Therapeutics Research Branch, Intramural Research Program, National Institute on Drug Abuse, Baltimore, MD, USA. kpreston@intra.nida.nih.gov.; Clinical Pharmacology and Therapeutics Research Branch, Intramural Research Program, National Institute on Drug Abuse, Baltimore, MD, USA.; Clinical Pharmacology and Therapeutics Research Branch, Intramural Research Program, National Institute on Drug Abuse, Baltimore, MD, USA.; Clinical Pharmacology and Therapeutics Research Branch, Intramural Research Program, National Institute on Drug Abuse, Baltimore, MD, USA.; Biomedical Informatics Section, Administrative Management Branch, Intramural Research Program, National Institute on Drug Abuse, 251 Bayview Blvd., Suite 200, Baltimore, MD, 21224, USA.; Biomedical Informatics Section, Administrative Management Branch, Intramural Research Program, National Institute on Drug Abuse, 251 Bayview Blvd., Suite 200, Baltimore, MD, 21224, USA.; Biomedical Informatics Section, Administrative Management Branch, Intramural Research Program, National Institute on Drug Abuse, 251 Bayview Blvd., Suite 200, Baltimore, MD, 21224, USA.; Clinical Pharmacology and Therapeutics Research Branch, Intramural Research Program, National Institute on Drug Abuse, Baltimore, MD, USA. BT - Psychopharmacology C5 - HIT & Telehealth; Opioids & Substance Use CP - 17 CY - Germany DO - 10.1007/s00213-017-4663-0 IS - 17 JF - Psychopharmacology M1 - Journal Article N2 - RATIONALE: Knowing how stress manifests in the lives of people with substance-use disorders could help inform mobile "just in time" treatment. OBJECTIVES: The purpose of this paper is to examine discrete episodes of stress, as distinct from the fluctuations in background stress assessed in most EMA studies. METHODS: For up to 16 weeks, outpatients on opioid-agonist treatment carried smartphones on which they initiated an entry whenever they experienced a stressful event (SE) and when randomly prompted (RP) three times daily. Participants reported the severity of stress and craving and the context of the report (location, activities, companions). Decomposition of covariance was used to separate within-person from between-person effects; r effect sizes below are within-person. RESULTS: Participants (158 of 182; 87%) made 1787 stress-event entries. Craving for opioids increased with stress severity (r effect = 0.50). Stress events tended to occur in social company (with acquaintances, 0.63, friends, 0.17, or on the phone, 0.41) rather than with family (spouse, -0.14; child, -0.18), and in places with more overall activity (bars, 0.32; outside, 0.28; walking, 0.28) and more likelihood of unexpected experiences (with strangers, 0.17). Being on the internet was slightly protective (-0.22). Our prior finding that being at the workplace protects against background stress in our participants was partly supported in these stressful-event data. CONCLUSIONS: The contexts of specific stressful events differ from those we have seen in prior studies of ongoing background stress. However, both are associated with drug craving. PP - Germany PY - 2017 SN - 1432-2072; 0033-3158 SP - 2631 EP - 2642 EP - T1 - Context and craving during stressful events in the daily lives of drug-dependent patients T2 - Psychopharmacology TI - Context and craving during stressful events in the daily lives of drug-dependent patients U1 - HIT & Telehealth; Opioids & Substance Use U2 - 28593441 U3 - 10.1007/s00213-017-4663-0 VL - 234 VO - 1432-2072; 0033-3158 Y1 - 2017 Y2 - Sep ER -