Does the addition of a supportive chatbot promote user engagement with a smoking cessation app? An experimental study von Perski, Olga, Crane, David, Beard, Emma, Brown, Jamie

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Association between changes in harm perceptions and e-cigarette use among current tobacco smokers in England: a time series analysis von Perski, Olga, Beard, Emma, Brown, Jamie

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Seven lessons for interdisciplinary research on interactive digital health interventions von Blandford, Ann, Gibbs, Jo, Newhouse, Nikki, Perski, Olga, Singh, Aneesha, Murray, Elizabeth

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Pilot randomised controlled trial of the Risk Acceptance Ladder (RAL) as a tool for targeting health communications von Perski, Olga, Stevens, Claire, West, Robert, Shahab, Lion

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Effectiveness of the Offer of the Smoke Free Smartphone App Compared With No Intervention for Smoking Cessation: Pragmatic Randomized Controlled Trial von Jackson, Sarah, Kale, Dimitra, Beard, Emma, Perski, Olga, West, Robert, Brown, Jamie

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Associations between smoking to relieve stress, motivation to stop and quit attempts across the social spectrum: A population survey in England von Perski, Olga, Theodoraki, Maria, Cox, Sharon, Kock, Loren, Shahab, Lion, Brown, Jamie

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Smoking Cessation Smartphone App Use Over Time: Predicting 12-Month Cessation Outcomes in a 2-Arm Randomized Trial von Bricker, Jonathan B, Mull, Kristin E, Santiago-Torres, Margarita, Miao, Zhen, Perski, Olga, Di, Chongzhi

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The Effect of the First UK COVID-19 Lockdown on Users of the Drink Less App: Interrupted Time Series Analysis of Sociodemographic Characteristics, Engagement, and Alcohol Reduction von Oldham, Melissa, Perski, Olga, Loebenberg, Gemma, Brown, Jamie, Garnett, Claire

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Characterizing and predicting person-specific, day-to-day, fluctuations in walking behavior von Chevance, Guillaume, Baretta, Dario, Heino, Matti, Perski, Olga, Olthof, Merlijn, Klasnja, Predrag, Hekler, Eric, Godino, Job

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The Digital Therapeutics Real-World Evidence Framework: An Approach for Guiding Evidence-Based Digital Therapeutics Design, Development, Testing, and Monitoring von Kim, Meelim, Patrick, Kevin, Nebeker, Camille, Godino, Job, Stein, Spencer, Klasnja, Predrag, Perski, Olga, Viglione, Clare, Coleman, Aaron, Hekler, Eric

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Assessing the Psychometric Properties of the Digital Behavior Change Intervention Engagement Scale in Users of an App for Reducing Alcohol Consumption: Evaluation Study von Perski, Olga, Lumsden, Jim, Garnett, Claire, Blandford, Ann, West, Robert, Michie, Susan

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Exploring Users’ Experiences With a Quick-Response Chatbot Within a Popular Smoking Cessation Smartphone App: Semistructured Interview Study von Alphonse, Alice, Stewart, Kezia, Brown, Jamie, Perski, Olga

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Prevalence and characteristics of smokers interested in using virtual reality for encouraging smoking cessation: a representative population survey in Great Britain von Okpako, Tosan, Kale, Dimitra, Perski, Olga, Brown, Jamie

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Personality typologies of smokers and excessive drinkers: a cross-sectional survey of respondents in the BBC Lab UK Study [version 2; peer review: 1 approved] von Perski, Olga, Nikiel, Astrid, Brown, Jamie, Shahab, Lion

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Scientific and ethical challenges to defining what constitutes ‘proportionate evidence’ for the regulation and accreditation of applications to treat addiction von Perski, Olga

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The impact of celebrity influence and national media coverage on users of an alcohol reduction app: a natural experiment von Garnett, Claire, Perski, Olga, Beard, Emma, Michie, Susan, West, Robert, Brown, Jamie

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Developing content for a virtual reality scenario that motivates quit attempts in adult smokers: A focus group study with art-based methods von Okpako, Tosan, Kale, Dimitra, Perski, Olga, Brown, Jamie

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Association of smoking status with hospitalisation for COVID-19 compared with other respiratory viruses a year previous: a case-control study at a single UK National Health Service... von Simons, David, Perski, Olga, Shahab, Lion, Brown, Jamie, Bailey, Robin

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Evaluating the Acceptability of the Drink Less App and the National Health Service Alcohol Advice Web Page: Qualitative Interview Process Evaluation von Oldham, Melissa, Dina, Larisa-Maria, Loebenberg, Gemma, Perski, Olga, Brown, Jamie, Angus, Colin, Beard, Emma, Burton, Robyn, Field, Matt, Greaves, Felix, Hickman, Matthew, Kaner, Eileen, Michie, Susan, Munafò, Marcus R, Pizzo, Elena, Garnett, Claire

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User Engagement Clusters of an 8-Week Digital Mental Health Intervention Guided by a Relational Agent (Woebot): Exploratory Study von Hoffman, Valerie, Flom, Megan, Mariano, Timothy Y, Chiauzzi, Emil, Williams, Andre, Kirvin-Quamme, Andrew, Pajarito, Sarah, Durden, Emily, Perski, Olga

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