Cumpston M, Li T, Page MJ, Chandler J, Welch VA, Higgins JP, Thomas J Updated guidance for trusted systematic reviews: a new edition of the Cochrane Handbook for Systematic Reviews of Interventions. Cochrane Database Syst Rev. 2019 Oct 3;10:ED000142. doi: 10.1002/14651858.ED000142.
GBD 2017 Risk Factor Collaborators Global, regional, and national comparative risk assessment of 84 behavioural, environmental and occupational, and metabolic risks or clusters of risks for 195 countries and territories, 1990-2017: a systematic analysis for the Global Burden of Disease Study 2017. Lancet. 2018 Nov 10;392(10159):1923-1994. doi: 10.1016/S0140-6736(18)32225-6. Epub 2018 Nov 8. Erratum in: Lancet. 2019 Jan 12;393(10167):132. Lancet. 2019 Jun 22;393(10190):e44.
Litvin S, Saunders R, Maier MA, Lüttke S Gamification as an approach to improve resilience and reduce attrition in mobile mental health interventions: A randomized controlled trial. PLoS One. 2020 Sep 2;15(9):e0237220. doi: 10.1371/journal.pone.0237220. eCollection 2020.
Statistics Canada Canadian Internet Use Survey. Last modified: 29 October 2019. Retrieved: 20 October 2020. Available from: https://www150.statcan.gc.ca/n1/dailyquotidien/191029/dq191029a-eng.htm
Villinger K, Wahl DR, Boeing H, Schupp HT, Renner B The effectiveness of app-based mobile interventions on nutrition behaviours and nutrition-related health outcomes: A systematic review and meta-analysis. Obes Rev. 2019 Oct;20(10):1465-1484. doi: 10.1111/obr.12903. Epub 2019 Jul 28.
Use of Gamification in Health Apps for Lifestyle Intervention: A Systematic Review
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.
