Crellin D, Harrison D, Santamaria N, Babl FE Comparison of the Psychometric Properties of the FLACC Scale, the MBPS and the Observer Applied Visual Analogue Scale Used to Assess Procedural Pain. J Pain Res. 2021 Mar 31;14:881-892. doi: 10.2147/JPR.S26783
Hatfield LA, Ely EA Measurement of acute pain in infants: a review of behavioral and physiological variables. Biol Res Nurs. 2015 Jan;17(1):100-11. doi: 10.1177/1099800414531448. Epub 2014 May 1.
LoBue V, Adolph KE Fear in infancy: Lessons from snakes, spiders, heights, and strangers. Dev Psychol. 2019 Sep;55(9):1889-1907. doi: 10.1037/dev0000675.
Pancekauskaite G, Jankauskaite L Paediatric Pain Medicine: Pain Differences, Recognition and Coping Acute Procedural Pain in Paediatric Emergency Room. Medicina (Kaunas). 2018 Nov 27;54(6):94. doi: 10.3390/medicina54060094.
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.
