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  • disease
  • Classification aspects must be carefully tested and validated, such that confounding effects are minimized, making them either true prognostic factors, which estimate disease outcomes such as disease-free or overall survival in the absence of therapy, or true predictive factors, which estimate the likelihood of response or lack of response to a specific treatment. (wikipedia.org)
  • statistical
  • a class of statistical procedures for estimating survival rates and making inferences about effects of treatment, prognostic factors, and other concerns. (drugs.com)
  • Systematic reviews often, but not always, use statistical techniques (meta-analysis) to combine results of eligible studies, or at least use scoring of the levels of evidence depending on the methodology used. (wikipedia.org)
  • Statistical analyses of some highly fossiliferous strata in Meishan, Zhejiang Province in southeastern China, suggest that the main extinction was clustered around one peak. (wikipedia.org)
  • He held several important positions, as the Director of the Indian Statistical Institute, Jawaharlal Nehru Professor and National Professor in India, University Professor at the University of Pittsburgh and Eberly Professor and Chair of Statistics and Director of the Center for Multivariate Analysis at the Pennsylvania State University. (wikipedia.org)
  • Survival rates are important for prognosis, but because the rate is based on the population as a whole, an individual prognosis may be different depending on newer treatments since the last statistical analysis as well as the overall general health of the patient. (wikipedia.org)
  • Estimators
  • He was a distinguished mathematical statistician whose wide-ranging research included the analysis of martingale inequalities, Markov processes, de Finetti's theorem, consistency of Bayes estimators, sampling, the bootstrap, and procedures for testing and evaluating models. (wikipedia.org)
  • methods
  • Each included study may be assigned an objective assessment of methodological quality preferably by using methods conforming to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement (the current guideline) or the high quality standards of Cochrane. (wikipedia.org)
  • Covariates
  • The log of the survival time is modeled as a linear effect of covariates and a random disturbance term, the distribution of which includes the Weibull, log-normal, and log-logistic distributions. (sas.com)
  • mortality
  • When someone is interested in how survival is affected by the disease, there is also the net survival rate, which filters out the effect of mortality from other causes than the disease. (wikipedia.org)
  • Differences
  • Differences in mean survival times were identified in children not more than 4 months of age with respect to the following diagnoses: impaired gas exchange, ineffective breathing pattern, activity intolerance, delayed growth and development, and decreased cardiac output. (redorbit.com)
  • outcomes
  • In a second case study, we will code to extend our toolbox outside of lifelines with the analysis of multiple outcomes (competing risks). (pyvideo.org)
  • Death
  • In the case of biological survival, death is unambiguous, but for mechanical reliability, failure may not be well-defined, for there may well be mechanical systems in which failure is partial, a matter of degree, or not otherwise localized in time. (wikipedia.org)
  • in this context, death or failure is considered an "event" in the survival analysis literature - traditionally only a single event occurs for each subject, after which the organism or mechanism is dead or broken. (wikipedia.org)