Six-Month Outcomes from the NEXit Junior Trial of a Text Messaging Smoking Cessation Intervention for High School Students: Randomized Controlled Trial With Bayesian Analysis

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Fältnamn	Indikatorer	Metadata
000		04786naa a2200349 4500
001		oai:DiVA.org:liu-181699
003		SwePub
008		211208s2021 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-1816992 URI
024	7	a https://doi.org/10.2196/299132 DOI
040		a (SwePub)liu
041		a engb eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a art2 swepub-publicationtype
100	1	a Bendtsen, Marcusu Linköpings universitet,Avdelningen för samhälle och hälsa,Medicinska fakulteten4 aut0 (Swepub:liu)marbe92
245	1 0	a Six-Month Outcomes from the NEXit Junior Trial of a Text Messaging Smoking Cessation Intervention for High School Students :b Randomized Controlled Trial With Bayesian Analysis
264		c 2021-10-21
264	1	b JMIR Publications Inc,c 2021
338		a electronic2 rdacarrier
520		a Background: The prevalence of daily or occasional smoking among high school students in Sweden was approximately 20% in 2019, which is problematic since lifestyle behaviors are established in adolescence and track into adulthood. The Nicotine Exit (NEXit) Junior trial was conducted in response to a lack of evidence for the effects of text message smoking cessation interventions among high school students in Sweden. Objective: The aim of this study was to estimate the 3-and 6-month effects of a text messaging intervention among high school students in Sweden on smoking cessation outcomes. Methods: A 2-arm, single-blind randomized controlled trial was employed to estimate the effects of the intervention on smoking cessation in comparison to treatment as usual. Participants were recruited from high schools in Sweden using advertising and promotion by school staff from January 10, 2018, to January 10, 2019. Weekly or daily smokers who were willing to make a quit attempt were eligible for inclusion. Prolonged abstinence and point prevalence of smoking cessation were measured at 3 and 6 months after randomization. Results: Complete case analysis was possible on 57.9% (310/535) of the participants at 6 months, with no observed statistically significant effect on 5-month prolonged abstinence (odds ratio [OR] 1.27, 95% CI 0.73-2.20; P=.39) or 4-week smoking cessation (OR 1.42; 95% CI 0.83-2.46; P=.20). Sensitivity analyses using imputation yielded similar findings. Unplanned Bayesian analyses showed that the effects of the intervention were in the anticipated direction. The findings were limited by the risk of bias induced by high attrition (42.1%). The trial recruited high school students in a pragmatic setting and included both weekly and daily smokers; thus, generalization to the target population is more direct compared with findings obtained under more strict study procedures. Conclusions: Higher than expected attrition rates to follow-up 6 months after randomization led to null hypothesis tests being underpowered; however, unplanned Bayesian analyses found that the effects of the intervention were in the anticipated direction. Future trials of smoking cessation interventions targeting high school students should aim to prepare strategies for increasing retention to mid-and long-term follow-up. Trial Registration: IRCTN Registry ISRCTN15396225; https://www.isrctn.com/ISRCTN15396225 International Registered Report Identifier (IRRID): RR2-10.1186/s13063-018-3028-2
650	7	a MEDICIN OCH HÄLSOVETENSKAPx Hälsovetenskapx Folkhälsovetenskap, global hälsa, socialmedicin och epidemiologi0 (SwePub)303022 hsv//swe
650	7	a MEDICAL AND HEALTH SCIENCESx Health Sciencesx Public Health, Global Health, Social Medicine and Epidemiology0 (SwePub)303022 hsv//eng
653		a smoking; cessation; text messaging; high school; randomized controlled trial; intervention; student; young adult; teenager; outcome; Bayesian; Sweden; prevalence; lifestyle; behavior
700	1	a Bendtsen, Preben,d 1956-u Linköpings universitet,Avdelningen för samhälle och hälsa,Medicinska fakulteten,Region Östergötland, Medicinska specialistkliniken4 aut0 (Swepub:liu)prebe15
700	1	a Müssener, Ulrikau Linköpings universitet,Avdelningen för samhälle och hälsa,Medicinska fakulteten4 aut0 (Swepub:liu)ulrkl01
710	2	a Linköpings universitetb Avdelningen för samhälle och hälsa4 org
773	0	t JMIR mhealth and uhealthd : JMIR Publications Incg 9:10q 9:10x 2291-5222
856	4	u https://liu.diva-portal.org/smash/get/diva2:1618016/FULLTEXT01.pdfx primaryx Raw objecty fulltext:print
856	4	u https://jmir.org/api/download?alt_name=mhealth_v9i10e29913_app1.pdf&filename=2cf53a053402af8b3d855d3b2e845d5b.pdf
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-181699
856	4 8	u https://doi.org/10.2196/29913

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