Positive deviance for promoting dual-method contraceptive use among women in Uganda: a cluster randomised controlled trial

ObjectiveTo examine the effects of a positive deviance intervention on dual-method contraceptive use among married or in-union women.DesignOpen-label cluster randomised controlled trial.Setting20 health facilities in Mbarara District, Uganda.Participants960 married or in-union women aged 18–49 years using a non-barrier modern contraceptive method.InterventionsA combination of clinic-based and telephone-based counselling and a 1-day participatory workshop, which were developed based on a preliminary qualitative study of women practising dual-method contraception.Primary outcome measureDual-method contraceptive use at the last sexual intercourse and its consistent use in the 2 months prior to each follow-up. These outcomes were measured based on participants’ self-reports, and the effect of intervention was assessed using a mixed-effects logistic regression model.ResultsMore women in the intervention group used dual-method contraception at the last sexual intercourse at 2 months (adjusted OR (AOR)=4.12; 95% CI 2.02 to 8.39) and 8 months (AOR=2.16; 95% CI 1.06 to 4.41) than in the control group. At 4 and 6 months, however, the proportion of dual-method contraceptive users was not significantly different between the two groups. Its consistent use was more prevalent in the intervention group than in the control group at 2 months (AOR=14.53; 95% CI 3.63 to 58.13), and this intervention effect lasted throughout the follow-up period.ConclusionsThe positive deviance intervention increased dual-method contraceptive use among women, and could be effective at reducing the dual risk of unintended pregnancies and HIV infections. This study demonstrated that the intervention targeting only women can change behaviours of couples to practise dual-method contraception. Because women using non-barrier modern contraceptives may be more reachable than men, interventions targeting such women should be recommended.Trial registration numberUMIN000037065.

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Increasing the uptake of long-acting reversible contraception in general practice: the Australian Contraceptive ChOice pRoject (ACCORd) cluster randomised controlled trial longitudinal follow-up protocol

BMJ Open ◽

10.1136/bmjopen-2019-035895 ◽

2020 ◽

Vol 10 (9) ◽

pp. e035895

Author(s):

Danielle Mazza ◽

Natalie Amos ◽

Cathy J Watson ◽

Kevin McGeechan ◽

Marion Haas ◽

...

Keyword(s):

Controlled Trial ◽

Intervention Group ◽

Cluster Randomised Controlled Trial ◽

Cluster Randomised ◽

Accord Study ◽

Contraceptive Choice ◽

Long Acting ◽

Randomised Controlled

IntroductionThrough addressing main barriers to the uptake of long-acting reversible contraceptives (LARCs) among Australian women, the Australian Contraceptive ChOice pRoject (ACCORd) trialled an educational intervention targeting general practitioners (GPs) and provided those in the intervention group with a rapid referral service for quick insertion. The cluster randomised controlled trial resulted in greater uptake of LARC in the intervention group. This protocol paper describes a longitudinal follow-up to the ACCORd Study to assess the long-term efficacy and cost-effectiveness of the intervention.Methods and analysisWomen participants (patients of ACCORd GPs) completed a baseline, 6-month and 12-month survey. These participants will be invited to complete an additional follow-up survey 3 years post completion of their baseline interview. Based on the original ACCORd Study tools, the online survey will address long-term outcomes including contraceptive continuation rates and reproductive history, any unintended pregnancies, satisfaction and concerns with their current contraceptive method, and an assessment of quality of life. We will analyse data using binary regression models with generalised estimating equations and robust standard errors to account for clustering.DiscussionDemonstration of sustained use, effectiveness at reducing unwanted pregnancies and cost-effectiveness of this strategy among this cohort of Australian primary care patients, will strengthen the policy and programme urgency of addressing wider dissemination of these strategies and replicating the study elsewhere.Ethics and disseminationThe ACCORd Study received approval from the Monash University Human Research Ethics Committee: CF16/188-201000080. Additionally, an amendment to conduct this 3-year longitudinal follow-up survey has been approved. The trial follow-up outcomes will be disseminated through formal academic pathways, including journal articles, national and international conferences and reports as well as using more ‘mainstream’ strategies such as seminars, workshops and media engagement. Additionally, outcomes will be communicated through policy briefs to Australian state and federal governments.Trail registration numberThis trial is registered with the Australian and New Zealand Trials Registry ACTRN12615001346561. Recruitment and data collection have been completed for the baseline, 6-month and 12-month surveys. Data collection for the 3-year survey commenced in August 2019.

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Efficacy of a smartphone-based coaching program for addiction prevention among apprentices: study protocol of a cluster-randomised controlled trial

BMC Public Health ◽

10.1186/s12889-020-09995-6 ◽

2020 ◽

Vol 20 (1) ◽

Author(s):

Severin Haug ◽

Raquel Paz Castro ◽

Andreas Wenger ◽

Michael P. Schaub

Keyword(s):

Randomised Controlled Trial ◽

Cigarette Smoking ◽

Internet Use ◽

Controlled Trial ◽

Intervention Group ◽

Cluster Randomised Controlled Trial ◽

Control Group ◽

Addiction Prevention ◽

Cluster Randomised ◽

Randomised Controlled

Abstract Background A large proportion of apprentices shows addictive behaviours like cigarette smoking, alcohol, cannabis, or compulsive Internet use, others do not show such behaviours at all. ready4life is a smartphone application-based coaching program for apprentices, which takes into account the heterogeneity of adolescent addictive behaviour by promoting life skills and reducing risk behaviours. The main objective of the planned study is to test the efficacy of ready4life for addiction prevention among apprentices in Switzerland within a controlled trial. Methods/design The efficacy of the ready4life coaching program will be tested in comparison to an assessment only control group, within a cluster-randomised controlled trial with one follow-up assessment after 6 months. At the beginning of the program, participants of the intervention group will receive an individual profile, showing areas in which they have sufficient resources and in which there is a need for coaching. Based on this feedback, they can select two out of the following six program modules: stress, social skills, Internet use, tobacco/e-cigarettes, cannabis, and alcohol. Participants of the intervention group will receive individualised coaching by a conversational agent (chatbot) for a period of four months. The coaching relies on motivational and social-cognitive principles of behaviour change. Within weekly dialogues, the coach provides individually tailored information in different formats, such as videoclips, texts, or pictures. Study participants will be 1318 apprentices with a minimum age of 15, recruited in approximately 100 vocational school classes in Switzerland. Primary outcome will be a composite measure for addictive behaviours including (1) at risk-drinking, (2) tobacco/e-cigarette smoking, (3) cannabis use, and (4) problematic Internet use. Discussion The study will reveal whether this universally implementable but individually tailored intervention approach is effective in preventing the onset and escalation of addictive behaviors among apprentices. Trial registration ISRCTN59908406 (registration date: 21/10/2020).

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An intervention to optimise coach-created motivational climates and reduce athlete willingness to dope (CoachMADE): a three-country cluster randomised controlled trial

British Journal of Sports Medicine ◽

10.1136/bjsports-2019-101963 ◽

2020 ◽

pp. bjsports-2019-101963

Author(s):

Nikos Ntoumanis ◽

Eleanor Quested ◽

Laurie Patterson ◽

Stella Kaffe ◽

Susan H Backhouse ◽

...

Keyword(s):

Randomised Controlled Trial ◽

Primary Outcome ◽

Controlled Trial ◽

Intervention Group ◽

Cluster Randomised Controlled Trial ◽

Trial Registration ◽

Perceived Effectiveness ◽

Cluster Randomised ◽

Randomised Controlled

ObjectivesCoach-centred antidoping education is scarce. We tested the efficacy of a motivationally informed antidoping intervention for coaches, with their athletes’ willingness to dope as the primary outcome.MethodsWe delivered a cluster randomised controlled trial in Australia, the UK and Greece. This study was a parallel group, two-condition, superiority trial. Participants were 130 coaches and 919 athletes. Coaches in the intervention group attended two workshops and received supplementary information to support them in adopting a motivationally supportive communication style when discussing doping-related issues with their athletes. Coaches in the control condition attended a standard antidoping workshop that provided up-to-date information on antidoping issues yet excluded any motivation-related content. Assessments of willingness to dope (primary outcome) and other secondary outcomes were taken at baseline, postintervention (3 months) and at a 2-month follow up.ResultsCompared with athletes in the control group, athletes in the intervention group reported greater reductions in willingness to take prohibited substances (effect size g=0.17) and psychological need frustration (g=0.23) at postintervention, and greater increases in antidoping knowledge (g=0.27) at follow-up. Coaches in the intervention group reported at postintervention greater increases in efficacy to create an antidoping culture (g=0.40) and in perceived effectiveness of need supporting behaviours (g=0.45) to deal with doping-related situations. They also reported greater decreases in doping attitudes (g=0.24) and perceived effectiveness of need thwarting behaviours (g=0.35).ConclusionsAntidoping education programmes should consider incorporating principles of motivation, as these could be beneficial to coaches and their athletes. We offer suggestions to strengthen these programmes, as most of the effects we observed were not sustained at follow-up.Trial registration numberThis trial has been registered with the Australian New Zealand Clinical Trials Registry (https://www.anzctr.org.au/Trial/Registration/TrialReview.aspx?id=371465&isReview=true).

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Effects of a kindergarten intervention on vegetables served and staff’s food-related practices: results of a cluster randomised controlled trial – the BRA study

Public Health Nutrition ◽

10.1017/s1368980019003963 ◽

2020 ◽

Vol 23 (6) ◽

pp. 1117-1126

Author(s):

Anne Himberg-Sundet ◽

Anne Lene Kristiansen ◽

Lene Frost Andersen ◽

Mona Bjelland ◽

Nanna Lien

Keyword(s):

Randomised Controlled Trial ◽

Vegetable Intake ◽

Controlled Trial ◽

Intervention Group ◽

Cluster Randomised Controlled Trial ◽

Control Group ◽

Public And Private ◽

Cluster Randomised ◽

Block Randomisation ◽

Randomised Controlled

AbstractObjective:The aim of the current study was to evaluate the effect on frequency, variety and amount of vegetables served and staff’s food-related practices in the multicomponent BRA intervention.Design:Cluster randomised controlled trial, conducted between Spring 2015 and Spring 2016. For allocation of the kindergartens, a stratified block randomisation was used. Data were collected in three ways: (i) a questionnaire for pedagogical leaders assessing the variety and frequency of vegetables served, including staff’s food-related practices assumed to be related to vegetable intake; (ii) a questionnaire for kindergarten assistants assessing staff’s food-related practices; (iii) a 5-d weighted vegetable diary assessing amount of vegetables served in a department.Setting:The target group for this study was public and private kindergartens in the counties of Vestfold and Buskerud, Norway.Participants:A total of seventy-three kindergartens participated.Results:At follow-up I, the amount of vegetables served increased by approximately 20 g per person per day (P = 0·002), and the variety in served vegetables increased by one-and-a-half kind per month (P = 0·014) in the intervention group compared to the control group. No effects on the frequency of vegetables served or on staff’s food-related practices were found.Conclusions:The BRA intervention was successful in increasing the amount and variety of vegetables served within intervention kindergartens. Further research is needed to understand the mechanisms that can affect the staff’s food-related practices.

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A Smartphone App in Promoting Mental Wellbeing and Awareness of Anxiety Disorders for Adolescents: A Pilot Cluster Randomised Controlled Trial (Preprint)

10.2196/preprints.22684 ◽

2020 ◽

Author(s):

Yuying Sun ◽

Man Ping Wang ◽

Sai Yin Ho ◽

Christian S. Chan ◽

Patrick K.W. Man ◽

...

Keyword(s):

Randomised Controlled Trial ◽

Anxiety Disorders ◽

Controlled Trial ◽

Intervention Group ◽

Cluster Randomised Controlled Trial ◽

Mental Wellbeing ◽

Smartphone App ◽

Control Group ◽

Cluster Randomised ◽

Randomised Controlled

BACKGROUND Mental health problems in adolescents are prevalent while population-based interventions for improving mental wellbeing of adolescents are limited. OBJECTIVE To design a smartphone app and evaluate its effect on promoting mental wellbeing of adolescents and awareness of anxiety disorders. METHODS A pilot cluster randomised controlled trial was conducted with 2 secondary schools (390 students, mean age 13.1 years) randomised to the intervention and control groups. A smartphone app was designed for one month’s use to promote mental wellbeing through “Sharing, Mind and Enjoyment (SME)” related interactions between students and their parents (e.g., express gratitude to family in words or actions), with assistance of App designers in releasing SME tasks daily. The waitlist control group was offered the app after completing all assessments. The primary outcomes were SME behaviours measured at 3-month after baseline. Secondary outcomes included subjective happiness, wellbeing, personal health and happiness, family health, happiness and harmony, self-perceived knowledge and understanding of anxiety disorders. Two focus groups of students and three individual in-depth interviews of service providers were conducted. RESULTS In the intervention students, 11.2% used the app together with parents and 45.4% used it without involving parents. The intervention group did not show significant difference in the change of SME behaviours at 1-month or 3-month compared with the control group. The intervention group showed greater increase in the awareness of anxiety disorders at follow-ups than the control group (Cohen’s d=0.52 at 1-month and 0.43 at 3-month, both P<0.001). Post-hoc analysis showed significantly greater increase in SME-related behaviours in the adherent subgroup than the control group at 3-month (d=0.46, P=0.04). The interviews found favourable changes in app users, but motivation of using the app was low in general. Both students and community partners suggested primary school students would be more receptive users. CONCLUSIONS The app did not show effectiveness in increasing SME behaviours of students but was effective in increasing awareness of anxiety disorders. Further improvements and tests among younger children and their parents are warranted. CLINICALTRIAL ClinicalTrials.gov NCT03361475

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Effectiveness of a medication adherence management intervention in a community pharmacy setting: a cluster randomised controlled trial

BMJ Quality & Safety ◽

10.1136/bmjqs-2020-011671 ◽

2021 ◽

pp. bmjqs-2020-011671

Author(s):

Andrea Torres-Robles ◽

Shalom I Benrimoj ◽

Miguel Angel Gastelurrutia ◽

Fernando Martinez-Martinez ◽

Tamara Peiro ◽

...

Keyword(s):

Medication Adherence ◽

Community Pharmacist ◽

Controlled Trial ◽

Intervention Group ◽

Cluster Randomised Controlled Trial ◽

Control Group ◽

Management Intervention ◽

Cluster Randomised ◽

Randomised Controlled ◽

Adherence Management

BackgroundNon-adherence to medications continues to be a burden worldwide, with significant negative consequences. Community pharmacist interventions seem to be effective at improving medication adherence. However, more evidence is needed regarding their impact on disease-specific outcomes. The aim was to evaluate the impact of a community pharmacist-led adherence management intervention on adherence and clinical outcomes in patients with hypertension, asthma and chronic obstructive pulmonary disease (COPD).MethodsA 6-month cluster randomised controlled trial was conducted in Spanish community pharmacies. Patients suffering from hypertension, asthma and COPD were recruited. Patients in the intervention group received a medication adherence management intervention and the control group received usual care. The intervention was based on theoretical frameworks for changing patient behaviour. Medication adherence, disease-specific outcomes (Asthma Control Questionnaire (ACQ) scores, Clinical COPD Questionnaire (CCQ) scores and blood pressure levels) and disease control were evaluated. A multilevel regression model was used to analyse the data.ResultsNinety-eight pharmacies and 1186 patients were recruited, with 1038 patients completing the study. Patients receiving the intervention had an OR of 5.12 (95% CI 3.20 to 8.20, p<0.05) of being adherent after the 6 months. At the end of the study, patients in the intervention group had lower diastolic blood pressure levels (mean difference (MD) −2.88, 95% CI −5.33 to −0.43, p=0.02), lower CCQ scores (MD −0.50, 95% CI −0.82 to −0.18, p<0.05) and lower ACQ scores (MD −0.28, 95% CI −0.56 to 0.00, p<0.05) when compared with the control group.ConclusionsA community pharmacist-led medication adherence intervention was effective at improving medication adherence and clinical outcomes in patients suffering from hypertension, asthma and COPD. Future research should explore the implementation of these interventions in routine practice.Trial registration numberACTRN12618000410257.

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Post-harvest interventions decrease aflatoxin and fumonisin contamination in maize and subsequent dietary exposure in Tanzanian infants: a cluster randomised-controlled trial

World Mycotoxin Journal ◽

10.3920/wmj2017.2234 ◽

2018 ◽

Vol 11 (3) ◽

pp. 447-458 ◽

Cited By ~ 9

Author(s):

A. Kamala ◽

M. Kimanya ◽

B. De Meulenaer ◽

P. Kolsteren ◽

L. Jacxsens ◽

...

Keyword(s):

Randomised Controlled Trial ◽

Controlled Trial ◽

Intervention Group ◽

Dietary Exposure ◽

Cluster Randomised Controlled Trial ◽

Mitigation Strategies ◽

Control Group ◽

Post Harvest ◽

Cluster Randomised ◽

Randomised Controlled

A cluster randomised controlled trial was performed in three agro-ecological zones of Tanzania to evaluate the effectiveness of locally available post-harvest mitigation strategies in preventing and reducing aflatoxin and fumonisin contamination in maize. A total of 300 children, each from one household, were randomly selected from 30 villages (intervention: n=15). The mitigation strategies focused on hand sorting (prior to storage and use), drying maize on mat/raised platforms, proper sun drying, application of storage insecticides and de-hulling before milling. Maize sample was collected from each household at harvest (baseline) and six months after harvest. Maize intake by each child, estimated using the 24 h dietary recall technique and its body weight measured using standard procedures were taken at six months after harvest. Aflatoxins and fumonisins in the maize samples were determined using HPLC. Follow-up (six month after harvest) data were available for 261 of the 300 households (intervention: n=136). Mean concentration of aflatoxins, or fumonisins was significantly (P<0.05) lower in the intervention than in the control group: intervention effects: μg/kg (95% confidence interval (CI)) -4.9 (-7.3,-2.5), and -405, (-647,-162), respectively. The difference corresponds to 83 and 70% for aflatoxins, and fumonisins, respectively. At the end of the intervention, aflatoxin and fumonisin estimated mean intakes were lower in the intervention than in the control group by 78 and 65%, respectively. Six months after harvest, prevalence of underweight in the intervention group was 6.7% lower (P=0.014) than in the control group. Mean weight-for-age Z-score difference between the groups was 0.57 (95% CI; 0.16,-0.98; P=0.007). Post-harvest practices are effective in preventing and reducing aflatoxin and fumonisin contamination in maize and subsequent dietary exposure to infants. The interventions may be applied in these and other communities with similar environmental conditions or agricultural practices that favour production of aflatoxin and fumonisins in food crops. The trial was registered at ClinicalTrials.gov identifier: NCT02438774.

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Expert-based medication reviews to reduce polypharmacy in older patients in primary care: a northern-Italian cluster-randomised controlled trial

BMC Geriatrics ◽

10.1186/s12877-021-02612-0 ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Angelika Mahlknecht ◽

Christian J. Wiedermann ◽

Marco Sandri ◽

Adolf Engl ◽

Martina Valentini ◽

...

Keyword(s):

Older Patients ◽

Primary Outcome ◽

Hospital Admissions ◽

Controlled Trial ◽

Intervention Group ◽

Cluster Randomised Controlled Trial ◽

Control Group ◽

Evidence Based ◽

Cluster Randomised ◽

Randomised Controlled

Abstract Background Evidence regarding clinically relevant effects of interventions aiming at reducing polypharmacy is weak, especially for the primary care setting. This study was initiated with the objective to achieve clinical benefits for older patients (aged 75+) by means of evidence-based reduction of polypharmacy (defined as ≥8 prescribed drugs) and inappropriate prescribing in general practice. Methods The cluster-randomised controlled trial involved general practitioners and patients in a northern-Italian region. The intervention consisted of a review of patient’s medication regimens by three experts who gave specific recommendations for drug discontinuation. Main outcome measures were non-elective hospital admissions or death within 24 months (composite primary endpoint). Secondary outcomes were drug numbers, hospital admissions, mortality, falls, fractures, quality of life, affective status, cognitive function. Results Twenty-two GPs/307 patients participated in the intervention group, 21 GPs/272 patients in the control group. One hundred twenty-five patients (40.7%) experienced the primary outcome in the intervention group, 87 patients (32.0%) in the control group. The adjusted rates of occurrence of the primary outcome did not differ significantly between the study groups (intention-to-treat analysis: adjusted odds ratio 1.46, 95%CI 0.99–2.18, p = 0.06; per-protocol analysis: adjusted OR 1.33, 95%CI 0.87–2.04, p = 0.2). Hospitalisations as single endpoint occurred more frequently in the intervention group according to the unadjusted analysis (OR 1.61, 95%CI 1.03–2.51, p = 0.04) but not in the adjusted analysis (OR 1.39, 95%CI 0.95–2.03, p = 0.09). Falls occurred less frequently in the intervention group (adjusted OR 0.55, 95%CI 0.31–0.98; p = 0.04). No significant differences were found regarding the other outcomes. Definitive discontinuation was obtained for 67 (16.0%) of 419 drugs rated as inappropriate. About 6% of the prescribed drugs were PIMs. Conclusions No conclusive effects were found regarding mortality and non-elective hospitalisations as composite respectively single endpoints. Falls were significantly reduced in the intervention group, although definitive discontinuation was achieved for only one out of six inappropriate drugs. These results indicate that (1) even a modest reduction of inappropriate medications may entail positive clinical effects, and that (2) focusing on evidence-based new drug prescriptions and prevention of polypharmacy may be more effective than deprescribing. Trial registration Current Controlled Trials (ID ISRCTN: 38449870), date: 11/09/2013.

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Low adherence to exercise may have influenced the proportion of OMERACT-OARSI responders in an integrated OA care model: Secondary analyses from a cluster-randomised controlled trial

10.21203/rs.2.17081/v1 ◽

2019 ◽

Author(s):

Tuva Moseng ◽

Hanne Dagfinrud ◽

Leti van Bodegom-Vos ◽

Krysia Dziedzic ◽

Kåre Birger Hagen ◽

...

Keyword(s):

Randomised Controlled Trial ◽

Controlled Trial ◽

Intervention Group ◽

Cluster Randomised Controlled Trial ◽

Control Group ◽

Care Model ◽

Structured Model ◽

Cluster Randomised ◽

Randomised Controlled ◽

And Control

Abstract Background: To address the well-documented gap between hip and knee osteoarthritis (OA) treatment recommendations and current clinical practice, a structured model for integrated OA care was developed and evaluated in a stepped-wedge cluster-randomised controlled trial. The current study used secondary outcomes to evaluate clinically important response to treatment through the Outcome Measures in Rheumatology Clinical Trials clinical responder criteria (OMERACT-OARSI responder criteria) after 3 and 6 months between patients receiving the structured OA care model vs. usual care. Secondly, the study aimed to investigate if the proportion of responders in the intervention group was influenced by adherence to the exercise program inherent in the model. Methods: The study was conducted in primary healthcare in six Norwegian municipalities. General practitioners and physiotherapists received training in OA treatment recommendations and use of the structured model. The intervention group attended a physiotherapist-led OA education program and performed individually tailored exercises for 8-12 weeks. The control group received usual care. Patient-reported pain, function and global assessment of disease activity during the last week were evaluated using 11-point numeric rating scales (NRS 0-10). These scores were used to calculate the proportion of OMERACT-OARSI responders. Two-level mixed logistic regression models were fitted to investigate differences in responders between the intervention and control group. Results: 284 intervention and 109 control group participants with hip and knee OA recruited from primary care in six Norwegian municipalities. In total 47% of the intervention and 35% of the control group participants were responders at 3 or 6 months combined; showing an uncertain between-group difference (OR adjusted 1.38 (95% CI 0.41, 4.67). In the intervention group, 184 participants completed the exercise programme (exercised ≥2 times/week for ≥8 weeks) and 55% of these were classified as responders. In contrast, 28% of the 86 non-completers were classified as responders. Conclusions: The difference in proportion of OMERACT-OARSI responders at 3 and 6 months between the intervention and control group was uncertain. In the intervention group, a larger proportion of responders were seen among the exercise completers compared to the non-completers.

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Is there an app for that? A cluster randomised controlled trial of a mobile app–based mental health intervention

Health Informatics Journal ◽

10.1177/1460458219884195 ◽

2019 ◽

Vol 26 (3) ◽

pp. 1538-1559 ◽

Cited By ~ 3

Author(s):

Rachel Kenny ◽

Amanda Fitzgerald ◽

Ricardo Segurado ◽

Barbara Dooley

Keyword(s):

Mental Health ◽

Randomised Controlled Trial ◽

Controlled Trial ◽

Intervention Group ◽

Cluster Randomised Controlled Trial ◽

Well Being ◽

Mobile App ◽

Control Group ◽

Cluster Randomised ◽

Randomised Controlled

Demand for the use of mobile apps in mental health interventions has grown in recent years, particularly among adolescents who experience elevated levels of distress. However, there is a scarcity of evidence for the effectiveness of these tools within this population. The aim of this study was to test the effectiveness of CopeSmart, a mental health mobile app, using a multicentre cluster randomised controlled trial design. Participants were 15–18-years-olds (N = 560) recruited from 10 schools randomly assigned to an intervention or control condition. Intervention participants used the app over a 4-week period. Multi-level modelling analyses revealed no significant changes in the intervention group from pre-test to post-test, when compared to the control group, in terms of emotional distress, well-being, emotional self-awareness or coping strategies. Findings suggest that a 4-week app-based intervention may not be enough to elicit intra-personal changes in mental health outcomes in a general adolescent population.

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