We used the Log rank test (Mantel–Cox test) which was derived as the score test using the Cox proportional hazards model. Here it is implemented via the 'coxph' function in 'survival' package in R (see Supporting Information for further details). The Log rank test p-value is a ...
Projection of future drought is often involved large uncertainties from climate models, emission scenarios as well as drought definitions. In this study, we investigate changes in future droughts in the conterminous United States based on 97 1/8 degree hydro-climate model projections. Instead of focu...
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Escherichia, a genus of anaerobic gram-negative bacilli, belongs to the family Enterobacteriaceae [1]. In 1884, a German paediatrician named Theodore Escherichia was the first to isolateE. colifrom the faeces of human infants [2]. Later,E. coliwas found to colonize the intestinal tract of inf...
Cox-proportional hazards model was further used to analyze the prognostic factors. The variables with p value < 0.15, such as sex, tumor size, VPI, PTs and histological subtype, were included in the Fig. 3 Pleural tags and corresponding hematoxylin–eosin-stained or elastica van ...
Institute of Agricultural Quality Standard and Testing Technology, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China 3. Agricultural Product Quality and Safety Risk Assessment Laboratory of the Ministry of Rural Agriculture, Urumq 830091, China 4. Xinjiang Key Laboratory of Agricultural Pro...
Errors can occur around the administration of medications, during laboratory testing, when infections occur within the healthcare setting, as a result of surgery, in an environment that contributes to pressure sores or a patient fall, or even in documentation or data entry tasks. A number of ...
We stratified all models by age (5-year categories) and sex to reduce the sensitivity to violations of the proportional hazards assumption. The first (basic) model included BMI only (model 1) and the second (multivariable-adjusted) model further adjusted for smoking status, alcohol intake, type...
The experimental study tries to answer this question with a series of laboratory tests, in which different natural and artificial granular materials have been investigated in dry condition by means of a tilting flume. The characteristic friction angles, both in deposition (repose) and stability limit...
inally, methods to simulate lightning currents in laboratory are presented which allow the verification of lightning protection measures or components. Types of Lightning that Connect to Earth Photo: horizontal and vertical lighting bolts over central Mexico, photo courtesy of Isabel Sanchez. ...