Mark Larsen

Dr. Mark Larsen


Research Focus & Metrics

Academic Career Length

12Years (2015-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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17 August 2015 in Journal of Medical Internet Research
Verified
Journal Article
Open access
Jennifer NicholasJennifer Nicholas
Jennifer Nicholas
MLMark Larsen
Mark Larsen
JPJudith Proudfoot
Judith Proudfoot
HCHelen Christensen
Helen Christensen
Journal of Medical Internet Research - International Scientific Journal for Medical Research, Information and Communication on the Internet

22 March 2019 in npj Digital Medicine
Verified
Journal Article
Open access
PDF file
MLMark Larsen
Mark Larsen
KHKit Huckvale
Kit Huckvale
JNJennifer Nicholas
Jennifer Nicholas
JTJohn Torous
John Torous
LBLouise Birrell
Louise Birrell
BRBill Reda
Bill Reda
Despite the emergence of curated app libraries for mental health apps, personal searches by consumers remain a common method for discovering apps. App store descriptions therefore represent a key channel to inform consumer choice. This study examined the claims invoked through these app store descriptions, the extent to which scientific language is used to support such claims, and the corresponding evidence in the literature. Google Play and iTunes were searched for apps related to depression, self-harm, substance use, anxiety, and schizophrenia. The descriptions of the top-ranking, consumer-focused apps were coded to identify claims of acceptability and effectiveness, and forms of supporting statement. For apps which invoked ostensibly scientific principles, a literature search was conducted to assess their credibility. Seventy-three apps were coded, and the majority (64%) claimed effectiveness at diagnosing a mental health condition, or improving symptoms, mood or self-management. Scientific language was most frequently used to support these effectiveness claims (44%), although this included techniques not validated by literature searches (8/24 = 33%). Two apps described low-quality, primary evidence to support the use of the app. Only one app included a citation to published literature. A minority of apps (14%) described design or development involving lived experience, and none referenced certification or accreditation processes such as app libraries. Scientific language was the most frequently invoked form of support for use of mental health apps; however, high-quality evidence is not commonly described. Improved knowledge translation strategies may improve the adoption of other strategies, such as certification or lived experience co-design.

13 April 2016 in PLOS ONE
Verified
Journal Article
Open access
PDF file
MLMark Larsen
Mark Larsen
Jennifer NicholasJennifer Nicholas
Jennifer Nicholas
HCHelen Christensen
Helen Christensen
Suicide is a leading cause of death globally, and there has been a rapid growth in the use of new technologies such as mobile health applications (apps) to help identify and support those at risk. However, it is not known whether these apps are evidence-based, or indeed contain potentially harmful content. This review examines the concordance of features in publicly available apps with current scientific evidence of effective suicide prevention strategies. Apps referring to suicide or deliberate self-harm (DSH) were identified on the Android and iOS app stores. Systematic review methodology was employed to screen and review app content. App features were labelled using a coding scheme that reflected the broad range of evidence-based medical and population-based suicide prevention interventions. Best-practice for suicide prevention was based upon a World Health Organization report and supplemented by other reviews of the literature. One hundred and twenty-three apps referring to suicide were identified and downloaded for full review, 49 of which were found to contain at least one interactive suicide prevention feature. Most apps focused on obtaining support from friends and family (n = 27) and safety planning (n = 14). Of the different suicide prevention strategies contained within the apps, the strongest evidence in the literature was found for facilitating access to crisis support (n = 13). All reviewed apps contained at least one strategy that was broadly consistent with the evidence base or best-practice guidelines. Apps tended to focus on a single suicide prevention strategy (mean = 1.1), although safety plan apps provided the opportunity to provide a greater number of techniques (mean = 3.9). Potentially harmful content, such as listing lethal access to means or encouraging risky behaviour in a crisis, was also identified. Many suicide prevention apps are available, some of which provide elements of best practice, but none that provide comprehensive evidence-based support. Apps with potentially harmful content were also identified. Despite the number of apps available, and their varied purposes, there is a clear need to develop useful, pragmatic, and multifaceted mobile resources for this population. Clinicians should be wary in recommending apps, especially as potentially harmful content can be presented as helpful. Currently safety plan apps are the most comprehensive and evidence-informed, for example, “Safety Net” and “MoodTools—Depression Aid”.

9 August 2016 in JMIR mHealth and uHealth
Verified
Journal Article
Open access
MLMark Larsen
Mark Larsen
Jennifer NicholasJennifer Nicholas
Jennifer Nicholas
HCHelen Christensen
Helen Christensen
Mobile and tablet apps, ubiquitous and pervasive computing, wearable computing and domotics for health.

27 April 2018 in Journal of Medical Internet Research
Verified
Journal Article
Open access
DCDamien Clus
Damien Clus
MLMark Larsen
Mark Larsen
CLChristophe LEMEY
Christophe LEMEY
SBSofian Berrouiguet
Sofian Berrouiguet
Journal of Medical Internet Research - International Scientific Journal for Medical Research, Information and Communication on the Internet

1 April 2020 in JMIR mHealth and uHealth
Verified
Journal Article
Open access
EGElise Guillodo
Elise Guillodo
CLChristophe LEMEY
Christophe LEMEY
MSMathieu Simonnet
Mathieu Simonnet
MWMichel Walter
Michel Walter
EBEnrique Baca-Garcia
Enrique Baca-Garcia
SBSofian Berrouiguet
Sofian Berrouiguet
Background: Sleep disorders are a major public health issue. Nearly 1 in 2 people experience sleep disturbances during their lifetime, with a potential harmful impact on well-being and physical and mental health. Objective: The aim of this study was to better understand the clinical applications of wearable-based sleep monitoring; therefore, we conducted a review of the literature, including feasibility studies and clinical trials on this topic. Methods: We searched PubMed, PsycINFO, ScienceDirect, the Cochrane Library, Scopus, and the Web of Science through June 2019. We created the list of keywords based on 2 domains: wearables and sleep. The primary selection criterion was the reporting of clinical trials using wearable devices for sleep recording in adults. Results: The initial search identified 645 articles; 19 articles meeting the inclusion criteria were included in the final analysis. In all, 4 categories of the selected articles appeared. Of the 19 studies in this review, 58 % (11/19) were comparison studies with the gold standard, 21% (4/19) were feasibility studies, 15% (3/19) were population comparison studies, and 5% (1/19) assessed the impact of sleep disorders in the clinic. The samples were heterogeneous in size, ranging from 1 to 15,839 patients. Our review shows that mobile-health (mHealth) wearable–based sleep monitoring is feasible. However, we identified some major limitations to the reliability of wearable-based monitoring methods compared with polysomnography. Conclusions: This review showed that wearables provide acceptable sleep monitoring but with poor reliability. However, wearable mHealth devices appear to be promising tools for ecological monitoring.