The effectiveness of digital technology interventions to reduce loneliness in adult people: A protocol for a systematic review and meta-analysis
ABSTRACTIntroductionLoneliness is an emerging public health problem, which is associated with social, emotional, mental and physical health issues. The application of digital technology (DT) interventions to reduce loneliness has increased in recent years. The effectiveness of DT interventions needs to be assessed systematically.Methods and analysisAimTo undertake a systematic review and meta-analysis on the effectiveness of digital technology interventions to reduce loneliness among adult people.Designsystematic review and meta-analysis.Data sourcesFive leading online bibliographic databases: PubMed, Medline, CINAHL, EMBASE, and Web of Science.Publication period1 January 2010 to 30 April 2019.Inclusion criteriaPrimary studies involving the application of digital technology interventions to reduce loneliness, involving adult participants (aged 18 years and more) and published in the English language.Search strategyLiterature searches using a priory list of keywords, involvement of two independent researchers in article screening, short listing and data extraction using a predefined template based on the population, intervention(s), comparator(s) and outcome(s) (PICO) framework.Synthesis and meta-analysisA narrative summary of the characteristics of included studies, findings by the type of DT intervention, and the age, gender and ethnicity of participants. A meta-analysis by the type of DT intervention and determination of effect sizes.Quality of evidence and biasQuality of evidence assessed the RoB 2.0 (revised tool for Risk of Bias in randomized trials) and ROBINS-I (Risk Of Bias in Non-randomized Studies - of Interventions) tools for randomized control trials and non-randomized studies respectively. Heterogeneity between studies determined by the I2 and Cochran’s Q statistics and publication bias checked with funnel plots and the Egger’s test.Patients and public involvementNoneEthics and disseminationEthics approval was not required for writing this protocol. The findings will be disseminated through the publication of research articles and conference presentations.PROSPERO Registration NumberCRD42019131524.Article SummaryStrengths and limitations of this studyThe main strength of this study includes a systematic assessment of evidence on the effectiveness of digital technology interventions to reduce loneliness, which is imperative from the health and social care and public health perspectives.Another strength of the study is the involvement of two independent researchers (and a third researcher as an arbitrator) involved in the identification, screening, inclusion and extraction of on a predefined template using the PICO framework.Limitations may include missing identification of additional relevant studies due to the application of selection filters such as the publication years and English as the publication language.