Barker LA, Gout BS, Crowe TC Hospital malnutrition: prevalence, identification and impact on patients and the healthcare system. Int J Environ Res Public Health. 2011 Feb;8(2):514-27. doi: 10.3390/ijerph8020514. Epub 2011 Feb 16. Review.
Cahill NE, Dhaliwal R, Day AG, Jiang X, Heyland DK Nutrition therapy in the critical care setting: what is "best achievable" practice? An international multicenter observational study. Crit Care Med. 2010 Feb;38(2):395-401. doi: 10.1097/CCM.0b013e3181c0263d.
Czaja AS, Scanlon MC, Kuhn EM, Jeffries HE Performance of the Pediatric Index of Mortality 2 for pediatric cardiac surgery patients. Pediatr Crit Care Med. 2011 Mar;12(2):184-9. doi: 10.1097/PCC.0b013e3181e89694.
de Souza Menezes F, Leite HP, Koch Nogueira PC Malnutrition as an independent predictor of clinical outcome in critically ill children. Nutrition. 2012 Mar;28(3):267-70. doi: 10.1016/j.nut.2011.05.015. Epub 2011 Aug 27.
Kielmann AA, McCord C Weight-for-age as an index of risk of death in children. Lancet. 1978 Jun 10;1(8076):1247-50.
Marcos A, Nova E, Montero A Changes in the immune system are conditioned by nutrition. Eur J Clin Nutr. 2003 Sep;57 Suppl 1:S66-9. Review.
Mehta NM, Bechard LJ, Cahill N, Wang M, Day A, Duggan CP, Heyland DK Nutritional practices and their relationship to clinical outcomes in critically ill children--an international multicenter cohort study*. Crit Care Med. 2012 Jul;40(7):2204-11. doi: 10.1097/CCM.0b013e31824e18a8.
Numa A, McAweeney J, Williams G, Awad J, Ravindranathan H Extremes of weight centile are associated with increased risk of mortality in pediatric intensive care. Crit Care. 2011;15(2):R106. doi: 10.1186/cc10127. Epub 2011 Mar 31.
Prince NJ, Brown KL, Mebrahtu TF, Parslow RC, Peters MJ Weight-for-age distribution and case-mix adjusted outcomes of 14,307 paediatric intensive care admissions. Intensive Care Med. 2014 Aug;40(8):1132-9. doi: 10.1007/s00134-014-3381-x. Epub 2014 Jul 18.
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.
