Mark E. Larsen

article

The Future Proofing Study: Design, methods and baseline characteristics of a prospective cohort study of the mental health of Australian adolescents

Aliza Werner‐Seidler, Kate Maston, Alison L. Calear, Philip J. Batterham, more

International Journal of Methods in Psychiatric Research > 32 > 3 > n/a - n/a

Objectives The Future Proofing Study (FPS) was established to examine factors associated with the onset and course of mental health conditions during adolescence. This paper describes the design, methods, and baseline characteristics of the FPS cohort. Methods The FPS is an Australian school‐based prospective cohort study with an embedded cluster‐randomized controlled trial examining the effects...

article

Promoting engagement with self‐guided digital therapeutics for mental health: Insights from a cross‐sectional survey of end‐users

Daniel Z. Q. Gan, Lauren McGillivray, Mark E. Larsen, Michelle Torok

Journal of Clinical Psychology > 79 > 5 > 1386 - 1397

Background Poor engagement has hindered the dissemination of self‐guided digital therapeutics for mental health. Evidence on the efficacy of technology‐supported strategies designed for increasing engagement with these interventions is currently inconclusive. Few studies have examined user perceptions of such strategies, which could yield key insights for enhancing their effectiveness. Methods...

article

Surveillance of suicide deaths involving gases in Australia using the National Coronial Information System, 2006 to 2017

Alexander C.R. Burnett, Nicola A. Chen, Lauren McGillivray, Mark E. Larsen, more

Australian and New Zealand Journal of Public Health > 45 > 3 > 242 - 247

Background: There have been concerns about the increased use of helium and nitrogen gas as a suicide mechanism in Australia. Methods: National Coronial Information System data were used to investigate gas‐specific suicides in Australia over the period 2006–2017. Characteristics were compared between helium or nitrogen, carbon monoxide and seven other gases. Results: Gas inhalation accounted for 10%...

article

The rate of reply and nature of responses to suicide-related posts on Twitter

Bridianne O'Dea, Melinda R. Achilles, Mark E. Larsen, Philip J. Batterham, more

Internet Interventions > 2018 > 13 > C > 105-107

The social media platform Twitter has been used by individuals to communicate suicidal thoughts and intentions. Currently, the nature and rate of reply to this type of Twitter content is unknown. This brief report aimed to understand how Twitter users respond to suicide-related content as compared to non-suicide related content. Using a dataset of suicide and non-suicide related posts, replies, retweets...

article

Smartphones, Sensors, and Machine Learning to Advance Real-Time Prediction and Interventions for Suicide Prevention: a Review of Current Progress and Next Steps

John Torous, Mark E. Larsen, Colin Depp, Theodore D. Cosco, more

Current Psychiatry Reports > 2018 > 20 > 7 > 1-6

Purpose of Review As rates of suicide continue to rise, there is urgent need for innovative approaches to better understand, predict, and care for those at high risk of suicide. Numerous mobile and sensor technology solutions have already been proposed, are in development, or are already available today. This review seeks to assess their clinical evidence and help the reader understand the current...

article

Kernel-based features for predicting population health indices from geocoded social media data

Thin Nguyen, Mark E. Larsen, Bridianne O’Dea, Duc Thanh Nguyen, more

Decision Support Systems > 2017 > 102 > C > 22-31

When using tweets to predict population health index, due to the large scale of data, an aggregation of tweets by population has been a popular practice in learning features to characterize the population. This would alleviate the computational cost for extracting features on each individual tweet. On the other hand, much information on the population could be lost as the distribution of textual features...

chapter

Smartphone app to investigate the relationship between social connectivity and mental health

Tjeerd W. Boonstra, Aliza Werner-Seidler, Bridianne O'Dea, Mark E. Larsen, more

2017 39th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) > 287 - 290

2017 39th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

Interpersonal relationships are necessary for successful daily functioning and wellbeing. Numerous studies have demonstrated the importance of social connectivity for mental health, both through direct peer-to-peer influence and by the location of individuals within their social network. Passive monitoring using smartphones provides an advanced tool to map social networks based on the proximity between...

article

Estimation of the prevalence of adverse drug reactions from social media

Thin Nguyen, Mark E. Larsen, Bridianne O’Dea, Dinh Phung, more

International Journal of Medical Informatics > 2017 > 102 > C > 130-137

This work aims to estimate the degree of adverse drug reactions (ADR) for psychiatric medications from social media, including Twitter, Reddit, and LiveJournal. Advances in lightning-fast cluster computing was employed to process large scale data, consisting of 6.4 terabytes of data containing 3.8 billion records from all the media. Rates of ADR were quantified using the SIDER database of drugs and...

chapter

The use of technology in Suicide Prevention

Mark E. Larsen, Nicholas Cummins, Tjeerd W. Boonstra, Bridianne O'Dea, more

2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) > 7316 - 7319

2015 37th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

Suicide is one of the leading causes of death globally, and is notably a significant cause of death amongst young people. A suicide outcome is a complex combination of personal, social, and health factors, and therefore suicide prevention is a challenge, requiring a systems approach incorporating public health strategies, screening at-risk individuals, targeted interventions, and follow-up for suicide...

article

We Feel: Mapping Emotion on Twitter

Mark E. Larsen, Tjeerd W. Boonstra, Philip J. Batterham, Bridianne ODea, more

IEEE Journal of Biomedical and Health Informatics > 2015 > 19 > 4 > 1246 - 1252

Research data on predisposition to mental health problems, and the fluctuations and regulation of emotions, thoughts, and behaviors are traditionally collected through surveys, which cannot provide a real-time insight into the emotional state of individuals or communities. Large datasets such as World Health Organization (WHO) statistics are collected less than once per year, whereas social network...

chapter

Mobile health for drug dose optimisation

Mark E Larsen, Andrew Farmer, Andrew Weaver, Annie Young, more

2011 Annual International Conference of the IEEE Engineering in Medicine and Biology Society > 1540 - 1543

2011 33rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society

Mobile health monitoring in the management of long term conditions has potential benefits for patient care, especially when coupled with active adjustment of medication dosage. We report studies of patient-led self-titration of oral glucose lowering medication (OGLM) and insulin in type 2 diabetes, and dose adjustments (including dose increases) in oral chemotherapy for metastatic colorectal or breast...

chapter

Chemotherapy side-effect management using mobile phones

Mark E. Larsen, Joanna Rowntree, Annie M. Young, Sarah Pearson, more

2008 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society > 5152 - 5155

2008 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society

Colorectal cancer is a major health problem in developed countries, accounting for a significant proportion of deaths in the population. Advances in chemotherapy treatment have led to therapy being delivered in the home-setting, which presents challenges in ensuring that treatment-related side-effects are detected and reported to clinical staff in an appropriate time-frame. A telemedicine system has...

INFONA - science communication portal

Search results for: Mark E. Larsen

The Future Proofing Study: Design, methods and baseline characteristics of a prospective cohort study of the mental health of Australian adolescents

Promoting engagement with self‐guided digital therapeutics for mental health: Insights from a cross‐sectional survey of end‐users

Surveillance of suicide deaths involving gases in Australia using the National Coronial Information System, 2006 to 2017

The rate of reply and nature of responses to suicide-related posts on Twitter

Smartphones, Sensors, and Machine Learning to Advance Real-Time Prediction and Interventions for Suicide Prevention: a Review of Current Progress and Next Steps

Kernel-based features for predicting population health indices from geocoded social media data

Smartphone app to investigate the relationship between social connectivity and mental health

Estimation of the prevalence of adverse drug reactions from social media

The use of technology in Suicide Prevention

We Feel: Mapping Emotion on Twitter

Mobile health for drug dose optimisation

Chemotherapy side-effect management using mobile phones

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