Landolt MA, Boehler U, Schwager C, Schallberger U, Nuessli R Post-traumatic stress disorder in paediatric patients and their parents: an exploratory study. J Paediatr Child Health. 1998 Dec;34(6):539-43. doi: 10.1046/j.1440-1754.1998.00303.x.
Malik F, Marwaha R Developmental Stages of Social Emotional Development in Children. 2022 Sep 18. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2024 Jan-. Available from http://www.ncbi.nlm.nih.gov/books/NBK534819/
Piira T, Sugiura T, Champion GD, Donnelly N, Cole AS The role of parental presence in the context of children's medical procedures: a systematic review. Child Care Health Dev. 2005 Mar;31(2):233-43. doi: 10.1111/j.1365-2214.2004.00466.x.
Scrimin S, Haynes M, Altoe G, Bornstein MH, Axia G Anxiety and stress in mothers and fathers in the 24 h after their child's surgery. Child Care Health Dev. 2009 Mar;35(2):227-33. doi: 10.1111/j.1365-2214.2008.00920.x.
Parental Presence at Anesthesia Induction in Infants - a Randomized Controlled Trial
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.
