The strengths of the
study include the ability to compare outcomes by the woman's planned place of birth at the start of care in labour, the high participation of midwifery units and trusts in England, the large sample size and statistical power to detect clinically important differences in adverse perinatal outcomes, the minimisation of selection bias through achievement of a high response rate and absence of self selection bias due to non-consent, the ability to compare groups that were similar in terms of identified
clinical risk (according to current
clinical guidelines) and to further increase the comparability of the groups by
conducting an additional analysis restricted to women with no complicating conditions identified at the start of care in labour, and the ability to control for
several important potential confounders.
«There have been
several clinical studies conducted, the majority positive and certainly the last two
clinical trials we've
conducted using kava root extract in tablet form have shown that it's quite effective in treating anxiety,» he says.
Dr. Powers completed a
clinical drug safety trial for the use of Advantage Multi for Cats (Bayer) in domestic ferrets, and has
conducted several other research
studies while at Carolina Veterinary Specialists, including an investigation into the metabolism of the anticonvulsant drug phenobarbital in African grey parrots and ongoing
studies investigating a newly characterized intestinal parasite of cockatiels, Spironucleus meleagridis.