864 research outputs found
Statistical Modeling of Epistasis and Linkage Decay using Logic Regression
Logic regression has been recognized as a tool that can identify and model non-additive genetic interactions using Boolean logic groups. Logic regression, TASSEL-GLM and SAS-GLM were compared for analytical precision using a previously characterized model system to identify the best genetic model explaining epistatic interaction of vernalization-sensitivity in barley. A genetic model containing two molecular markers identified in vernalization response in barley was selected using logic regression while both TASSEL-GLM and SAS-GLM included spurious associations in their models. The results also suggest the logic regression can be used to identify dominant/recessive relationships between epistatic alleles through its use of conjugate
operators
A New Prescription for Pain Management in Humans: Does Exercise Dose Matter?
Please refer to the pdf version of the abstract located adjacent to the title
Comparison of Two Low-Power Electronic Interfaces for Capacitive Mems Sensors
The paper discusses the importance and the issues of interfacing capacitive
sensors. Two architectures applicable for interfacing capacitive sensors are
presented. The first solution was designed to interface a capacitive humidity
sensor designed and built for a humidity-dependent monolithic capacitor
developed at Budapest University of Technology and Economics. The second case
presents the possible read-out solutions for a SOI-MEMS accelerometer. Both of
the architectures were built and tested in a discrete implementation to qualify
the methods before the integrated realization. The paper presents a detailed
comparison of the two methodsComment: Submitted on behalf of EDA Publishing Association
(http://irevues.inist.fr/EDA-Publishing
Direct medical costs of type 2 diabetes and its complications in Switzerland
Background: This paper analyses the direct medical costs of type 2 diabetes and its complications in Switzerland. Methods: Individual healthcare resource consumption related to type 2 diabetes and its complications was determined retrospectively in 1479 non-incident and non-dying patients over 12 months (1998-1999). Literature-derived attributable risks were used to correct for non-diabetes related macrovascular disease. Results: A total of 111 primary care physicians from 19 cantons throughout Switzerland participated. Their diabetic patients on average had 10.3 consultations per year related to this disease (95% CI: 10.0-10.7). Patients spent on average 2.7 days (95% CI: 2.2-3.3) per year in hospital due to diabetes and diabetes-related complications. Mean annual type 2 diabetes-related direct medical costs per patient amounted to CHF 3,508 / € 2,323 (95% CI: CHF 3,140-3,876 / € 2,080-2,567). They were particularly high in patients with insulin treatment or with complications. After application of attributable risks and a correction for the use of adjuvant materials, costs were CHF 3,324 / € 2,201. Assuming 250,000 patients with type 2 diabetes in Switzerland leads to an estimate of CHF 0.88 billion spent for this disease and its complications in 1998. This represents a share of about 2.2% of the country's total healthcare expenditures. Conclusion: These findings demonstrate the high economic importance of type 2 diabetes and its complications in Switzerlan
Production cross section of At radionuclides from Li+Pb and Be+Tl reactions
Earlier we reported theoretical studies on the probable production of
astatine radionuclides from Li and Be-induced reactions on
natural lead and thalliun targets, respectively. For the first time, in this
report, production of astatine radionuclides has been investigated
experimentally with two heavy ion induced reactions:
Be+Tl and Li+Pb. Formation cross
sections of the evaporation residues, At, produced in (HI,
xn) channel, have been measured by the stacked-foil technique followed by the
off-line -spectrometry at the low incident energies (50 MeV).
Measured excitation functions have been explained in terms of compound nuclear
reaction mechanism using Weisskopf-Ewing and Hauser-Feshbach model. Absolute
cross section values are lower than the respective theoretical predictions.Comment: 11 pages 6 figure
The KINDRA project – towards Open Science in Hydrogeology for higher impact
Groundwater knowledge and research in the European Union is often scattered and non-standardised. Therefore, KINDRA is conducting an EU-wide assessment of existing groundwater-related practical and scientific knowledge based on a new Hydrogeological Research Classification System (HRC-SYS). The classification is supported by a web service, the European Inventory of Groundwater Research (EIGR), which acts not only as a knowledge repository but also as a tool to help identify relevant research topics, existing research trends and critical research challenges. These results will be useful for
producing synergies, implementing policies and optimising water management in Europe. This article presents the work of the project during the first two years in relation to a common classification system and an activity for data collection and training delivered by the EFG’s National Associations in 20 European countries
Cost-effectiveness of trastuzumab in the adjuvant treatment of early breast cancer: a model-based analysis of the HERA and FinHer trial
BACKGROUND: Routine adjuvant administration of trastuzumab (T) has been implemented in most centers, but its economic impact has not yet been well examined. METHODS: A Markov model was constructed based on clinical data of the Herceptin Adjuvant (HERA) and the Finland Herceptin (FinHer) trials. Costs from the perspective of a Swiss health care provider were calculated based on resource use. RESULTS: On the basis of HERA data, our model yielded an overall survival rate of 71.8% for the T group versus 62.8% for the control group [risk ratio (RR) = 0.87) after 10 years and 62.9% versus 52.7% (RR = 0.84) after 15 years. Cost-effectiveness resulted in 40505 Euros (EUR) per life years gained (LYG) after 10 years and 19673 EUR per LYG after 15 years. For the FinHer regimen, overall survival after 10 and 15 years resulted in 81.8% versus 66.1% (RR = 0.81) and 73.6% versus 57.0% (RR = 0.77). Costs of 8497 EUR per patient could be saved after 10 years and 9256 EUR after 15 years compared with the control group. CONCLUSION: In a long-term perspective, adjuvant T based on the HERA regimen can be considered cost-effective. The regimen used in the FinHer trial is even cost saving, but estimations are based on a single small tria
Risk factors for chemotherapy-induced neutropenia occurrence in breast cancer patients: data from the INC-EU Prospective Observational European Neutropenia Study
BACKGROUND: Chemotherapy-induced neutropenia (CIN) places patients at risk of life-threatening infections. While reduction of chemotherapy dose or delay of the subsequent treatment cycle and, consequently, reduction of relative dose intensity (RDI) may limit myelotoxicity, these actions can also impact adversely on treatment outcome and should be avoided in adjuvant settings. PATIENTS AND METHODS: Based on data from 444 breast cancer patients in the INC-EU Prospective Observational European Neutropenia Study, we have evaluated patient-specific and treatment-specific factors that impact on the incidence of grade 4 CIN (absolute neutrophil count <0.5 x 10(9)/L), either during the first or in any cycle of (neo)adjuvant chemotherapy, across a range of regimens and doses. RESULTS: Using multivariate logistic regression analysis, risk factors for grade 4 CIN were identified as older age, lower weight, higher planned dose intensity of doxorubicin, epirubicin, or docetaxel, higher number of planned cycles, vascular comorbidity, lower baseline white blood cell count, and higher baseline bilirubin. Use of colony-stimulating factor before a neutropenic event occurred, dose delays, and dose reductions were protective against grade 4 CIN. CONCLUSIONS: By identifying risk factors for grade 4 CIN, CSF prophylaxis may be appropriately targeted to prevent low RDI in patients treated with curative intent
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