8).

CONCLUSION: These results suggest that the benefits of OPCAB

in terms of hospital resource use are influenced by sex. The potential beneficial effects are not demonstrated in the female population.”
“Background: Failure to cite prior evidence in the medical literature may result in publication redundancy and inefficient use of research funding. We evaluated trials in which internal fixation was compared with arthroplasty for the treatment of hip fractures in order to determine the extent to which these randomized trials cited all relevant previous trials.

Methods: We searched MEDLINE and Embase for all relevant articles on four topics: internal fixation compared with arthroplasty, total hip arthroplasty compared with

hemiarthroplasty, sliding hip screws compared with other fixation devices, and surgical delay of hip fracture treatment. We determined the proportion of previous studies that selleck chemicals were cited in comparison with the total number of previous studies that were citable (i.e., the citation rate) as well as the proportion learn more of times that a study was cited in comparison with the total number of times that it could have been cited (i.e., the hit rate). A cumulative meta-analysis was performed for the “”internal fixation compared with arthroplasty”" topic to determine whether compelling evidence favoring one intervention existed at an earlier time.

Results: In total, sixty studies were assessed and yielded an overall citation rate of 48%. All “”highly cited”" studies reported a positive result (favoring arthroplasty), and 60% were published in The Journal of Bone and Joint Surgery (American or British volume). The results of a study and the journal of publication significantly affected the hit rate (p <

0.05).

Conclusions: Our review of studies of hip fracture treatment suggests poor citation of the previous literature. Studies in higher-impact journals with positive results are more likely to be cited in subsequent studies. Therefore, redundancy in publication and unnecessary surgical trials often occur.”
“In Colombia, the mosquito Ochlerotatus taeniorhynchus has been identified as an efficient vector of the epidemic-epizootic Venezuelan equine encephalitis virus. We evaluated the genetic variability and heterogeneity www.selleckchem.com/products/CAL-101.html of this mosquito in Colombian populations using eight microsatellite DNA loci. Two hundred and ten mosquito specimens collected from seven populations of the Colombian Atlantic coast (San Bernardo del Viento, Cove as, Cartagena, Barranquilla, Cienaga, Dibulla, and Riohacha) were analyzed. We found five polymorphic microsatellite loci, with 19 alleles giving 62.5% polymorphism; the mean number of alleles per locus was 3.8. The mean expected heterogeneity ranged from 0.568 to 0.660. Most of the polymorphic microsatellite loci were in Hardy-Weinberg disequilibrium, due to both deficit and excess of heterozygotes. The Fst statistic gave a total value of 0.