Fusi L, Steer PJ, Maresh MJ, Beard RW Maternal pyrexia associated with the use of epidural analgesia in labour. Lancet. 1989 Jun 3;1(8649):1250-2. doi: 10.1016/s0140-6736(89)92341-6.
Gleeson NC, Nolan KM, Ford MR Temperature, labour, and epidural analgesia. Lancet. 1989 Oct 7;2(8667):861-2. doi: 10.1016/s0140-6736(89)93020-1. No abstract available.
Goetzl L, Cohen A, Frigoletto F Jr, Lang JM, Lieberman E Maternal epidural analgesia and rates of maternal antibiotic treatment in a low-risk nulliparous population. J Perinatol. 2003 Sep;23(6):457-61. doi: 10.1038/sj.jp.7210967.
Goodlin RC, Chapin JW Determinants of maternal temperature during labor. Am J Obstet Gynecol. 1982 May 1;143(1):97-103. doi: 10.1016/0002-9378(82)90689-5.
Grether JK, Nelson KB Maternal infection and cerebral palsy in infants of normal birth weight. JAMA. 1997 Jul 16;278(3):207-11. Erratum In: JAMA 1998 Jan 14;279(2):118.
Kaul B, Vallejo M, Ramanathan S, Mandell G Epidural labor analgesia and neonatal sepsis evaluation rate: a quality improvement study. Anesth Analg. 2001 Oct;93(4):986-90. doi: 10.1097/00000539-200110000-00038.
Leighton BL, Halpern SH The effects of epidural analgesia on labor, maternal, and neonatal outcomes: a systematic review. Am J Obstet Gynecol. 2002 May;186(5 Suppl Nature):S69-77. doi: 10.1067/mob.2002.121813.
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.
