Hjorth MF, Roager HM, Larsen TM, Poulsen SK, Licht TR, Bahl MI, Zohar Y, Astrup A Pre-treatment microbial Prevotella-to-Bacteroides ratio, determines body fat loss success during a 6-month randomized controlled diet intervention. Int J Obes (Lond). 2018 Mar;42(3):580-583. doi: 10.1038/ijo.2017.220. Epub 2017 Sep 8. Erratum in: Int J Obes (Lond). 2018 Feb 06;:.
Poulsen SK, Crone C, Astrup A, Larsen TM Long-term adherence to the New Nordic Diet and the effects on body weight, anthropometry and blood pressure: a 12-month follow-up study. Eur J Nutr. 2015 Feb;54(1):67-76. doi: 10.1007/s00394-014-0686-z. Epub 2014
Roager HM, Licht TR, Poulsen SK, Larsen TM, Bahl MI Microbial enterotypes, inferred by the prevotella-to-bacteroides ratio, remained stable during a 6-month randomized controlled diet intervention with the new nordic diet. Appl Environ Microbiol. 2014 Feb;80(3):1142-9. doi: 10.1128/AEM.03549-13. Epub 2013 Dec 2.
A Six Month Randomized Controlled Dietary Intervention Study of the New Nordic Diet vs Average Danish Diet in Adults (18-65y) Using the Shop Model for Optimal Dietary Adherence
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.
