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Topic: Survival function

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	1.3.6.2. Related Distributions
		The percent point function (ppf) is the inverse of the cumulative distribution function.
		The hazard function is the ratio of the probability density function to the survival function, S(x).
		The cumulative hazard function is the integral of the hazard function.
	www.itl.nist.gov /div898/handbook/eda/section3/eda362.htm (597 words)

	Survival/Failure Time Analysis
		An assumption of the proportional hazard model is that the hazard function for an individual (i.e., observation in the analysis) depends on the values of the covariates and the value of the baseline hazard.
		is a function of (1) the baseline hazard
		The Chi-square goodness-of-fit value is computed as a function of the log-likelihood for the model with all parameter estimates (L1), and the log-likelihood of the model in which all covariates are forced to 0 (zero; L0).
	www.statsoft.com /textbook/stsurvan.html (2842 words)

	Nonparametric Estimation of the Bivariate Survival Function with Truncated Data
		This problem is a special case of estimation of the bivariate survival function based on truncation by a bivariate truncation time, the problem covered in this paper; in the AIDS application one component of the bivariate truncation time-vector is always zero.
		In this application the bivariate survival function is of interest itself in order to study the relation between time until AIDS and time between AIDS and death.
		By simply plugging in one of the several proposals for estimation of the bivariate survival function based on right-censored data in the estimating equation we obtain an estimator based on right-censored randomly truncated data.
	www.bepress.com /ucbbiostat/paper51 (389 words)

	Survival
		Survival analysis is used to study the pattern of survival or failure over time.
		Survival function: S(t) (also called the survivorship function) the survival function shows the fraction of the original group who survive at various points in time.
		The survival function is plotted by connecting each period's survival rate to the next with a diagonal line segment.
	www.uncp.edu /home/frederick/DSC510/Survival.htm (1310 words)

	Introduction to Survival Analysis with SAS Seminar
		The term survival analysis is used predominately in biomedical sciences where the interest is in observing time to death either of patients or of laboratory animals.
		This graph is depicting the hazard function for the survival of organ transplant patients.
		The hazard function may not seem like an exciting variable to model but other indicators of interest, such as the survival function, are derived from the hazard rate.
	www.ats.ucla.edu /stat/sas/seminars/sas_survival (3991 words)

	Nonparametric Estimation of the Bivariate Survival Function with Truncated Data. (ResearchIndex)
		Nonparametric Estimation of the Bivariate Survival Function with Truncated Data.
		7 Inefficient estimators of the bivariate survival function fo..
		1 A covariance function for bivarate survival data and a bivar..
	citeseer.ist.psu.edu /vanderlaan99nonparametric.html (479 words)

	Factors that Influence Organ Survival and Function
		Delayed graft function, in turn, is associated with longer hospital stays, a higher rate of morbidity and mortality in the recipient, and a higher rate of late graft loss.
		That this function can be performed for some organs on a large geographic basis with some efficiency is attested to by current practice nationwide as well as the results within regional sharing programs.
		Both acute and chronic organ survival could be followed and analyzed by appropriate demographics to suggest where more efficient organ allocation might be implemented to maximize organ utilization.
	www.nap.edu /html/organ_procure/13.html (3167 words)

	Immunomodulatory effects of poly(ADP-ribose) polymerase inhibition contribute to improved cardiac function and survival ...
		Immunomodulatory effects of poly(ADP-ribose) polymerase inhibition contribute to improved cardiac function and survival during acute cardiac rejection.
		Functional, biochemical and histologic analyses were performed 3 and 5 days after transplantation in control and INO-1001-treated animals.
		Acute rejection led to a typical sequence of initial endothelial dysfunction and reduced contractile reserve followed by progressive systolic and diastolic dysfunction, which were reduced by PARP inhibition.
	hearttransplant.researchtoday.net /archive/2/7/418.htm (344 words)

	Definition: Survival Function or Survival Curve - TheMeasurementGroup.com
		The survival function is a graph that shows the probability that a client "survives" in a state at least a specified time.
		A survival curve shows the probability that a client "survives" in a given state for at least a specified time (or longer).
		Although survival curves were originally developed to study how long a patient survived symptom- or disease-free, they can also be used to study how long a client stays in a program.
	themeasurementgroup.com /Definitions/survival_function.htm (137 words)

	Caspase cleavage of the nuclear autoantigen LEDGF/p75 abrogates its pro-survival function: implications for ... (Site not responding. Last check: 2007-10-15)
		While the origin of autoimmunity to intracellular proteins in atopic disorders is unknown, it is presumed that abnormal cell death triggered by environmental allergens or intrinsic factors in the target organs of atopy (skin, eyes, respiratory and gastrointestinal tracts) might facilitate the sustained exposure of potentially immunostimulatory forms of intracellular autoantigens to the immune system.
		Functional implications of the apoptotic cleavage of LEDGF/p75
		Elucidating the mechanisms that maintain the delicate balance between cell death and survival is essential for understanding the pathophysiology of a wide variety of human diseases.
	www.nature.com /cdd/journal/v9/n9/full/4401063a.html (7499 words)

	R: Survival function estimator for recurrence time data using the estimator developed by Wang and Chang. (Site not responding. Last check: 2007-10-15)
		R: Survival function estimator for recurrence time data using the estimator developed by Wang and Chang.
		Survival function estimator for recurrence time data using the estimator developed by Wang and Chang.
		Estimation of survival function for correlated or i.i.d.
	www.stat.ucl.ac.be /ISdidactique/Rhelp/library/survrec/html/wcfit.html (260 words)

	Hunting Knives Survival Multi Function Lockblade & Styles
		Maxam Survival Knife with compass & survival gear(matches not included.) Features 420 bead blasted stainless steel 9" blade & a whopping 14-1/2" overall length.
		Functions include can opener, cork screw, reamer, manicure blade, sturdy reamer, phillips srewdriver, hook disgorger, fish scaler, wood / rope saw, scissors, cutting blade, cap lifter, slot screwdriver & key ring.
		Imagine the strength, beauty, function, complex yet simple design of a spider's web and that will give you the attitude taken when designing was done on this Maxam Knife.
	www.elitebargains.net /kn_sw_kp1.html (448 words)

	CSCAR at the University of Michigan: Workshops and Seminars: Survival Analysis
		This workshop, held over two days, covers basic concepts of and common analytical approaches for time-to-event data, known variously as survival analysis (in biological and medical sciences), event history analysis (in social sciences), or reliability analysis (in engineering).
		Basic concepts associated with the analysis of censored data (survival function, hazard function)
		Methods for estimating the survival function (Kaplan-Meier and life-table analyses)
	www.umich.edu /~cscar/workshops/survival.html (357 words)

	R: Survival function estimator for correlated recurrence time data under a Gamma Frailty Model (Site not responding. Last check: 2007-10-15)
		Survival function estimator for correlated recurrence time data under a Gamma Frailty Model
		Estimation of survival function for correlated recurrence time data under a Gamma Frailty model using the maximum likelihood criterion.
		In this case the arguments of mlefrailty.fit function called alpha.min and alpha.max are the boundaries of this maximisation.
	www.matematik.lu.se /help/R/.R/library/survrec/html/mlefrailtyfit.html (541 words)

	Survival function comparison tests
		For survival data recorded for individuals, test the null hypothesis that two more more samples are from populations that follow the same survival function, using the Mantel-Cox log-rank test, the Gehan-Breslow test, or the Tarone-Ware test.
		If any survival values are censored, they are randomly censored, and the distribution of censoring times for each sample is independent of the exact survival times for that samples.
		The values that happen to be censored come from the same survival distribution as those that are not censored.
	www.quality-control-plan.com /StatGuide/survival_tests.htm (527 words)

	Survival Analysis: Techniques for Censored and Truncated Data:038795399X:Klein, John P.:eCampus.com
		Estimators of the Survival and Cumulative Hazard Functions for Right-Censored Data
		Estimators of the Survival Function for Left-Truncated and Right-Censored Data
		C.5 Survival Function of the Supremum of the Absolute Value of a Standard Brownian Motion Process over the Range 0 to 1
	www.ecampus.com /book/038795399X (364 words)

	[No title] (Site not responding. Last check: 2007-10-15)
		Obviously, the estimated survival function is not a “smooth” function — the form of the function is known as a step function.
		Detailed computations for the respective medians reveal the median time of survival for low-grade tumors to be 212 months and the median time of survival for high-grade tumors to be 9 months.
		Clearly, there is a difference between the two survival functions; however, the logrank test will be performed to provide support for the above conclusion.
	www.facstaff.bucknell.edu /jwright/Math217/Notes/chap6_1.doc (812 words)

	RE: st: Compare predicted survival function with the observed
		A typical setting could be data from a cancer registry, where you want to compare the observed survival of the cancer patients with the survival expected if these patients would have the same rates of death of the general populations.
		The ratio of the observed and expected survival is the so called relative survival and so on.
		Previous by thread: st: Compare predicted survival function with the observed
	www.stata.com /statalist/archive/2004-06/msg00866.html (196 words)

	301. : Survival and function of hepatocytes on a novel three-dimensional synthetic biodegradable polymer scaffold with ... (Site not responding. Last check: 2007-10-15)
		Survival and function of hepatocytes on a novel three-dimensional synthetic biodegradable polymer scaffold with an intrinsic network of channels.
		Previous studies have demonstrated survival of HCs transplanted on polymer discs in peripheral tissue sites and partial correction of single enzyme liver defects.
		One of the major limitations has been the insufficient survival of an adequate mass of transplanted cells; this is thought to be caused by inadequate oxygen diffusion.
	home.att.net /~rpml/p02b/p02b_301.htm (446 words)

	Nat' Academies Press, (NAS Colloquium) Proteolytic Processing and Physiological Regulation (1999) (Site not responding. Last check: 2007-10-15)
		The amounts of VanH, -A, and -X in the cells are in turn controlled by a two-component regulatory system involving a transmembrane sensor kinase VanS and a response regulating transcription factor VanR that becomes active when phosphorylated by VanS (11, 13), after the established paradigms for monitoring of environmental cues.
		In particular, VanX homologues have been discovered in the bacteria that produce vancomycin and related glycopeptide antibiotics (14, 15) as well as in Escherichia coli, a Gram-negative bacterium that is intrinsically indifferent to vancomycin because of the failure of the antibiotic to penetrate the outer membrane barrier (15) (Table 1).
		The RpoS subunit is switched on in early stationary phase and is a central regulator of transcription of many genes that contribute to survival of the E.coli cell under starvation conditions (conditions that prevail in nature) (26).
	www.nap.edu /books/030906645X/html/11028.html (4582 words)

	Caspase Inhibitors Promote Vestibular Hair Cell Survival and Function after Aminoglycoside Treatment In Vivo -- Matsui ...
		Mean frequency response functions for the HVOR in streptomycin- and zVAD/streptomycin-treated animals.
		Frequency response functions for the HVOR in animals treated with zVAD alone.
		Gale JE, Meyers JR, Periasamy A, Corwin JT (2002) Survival of bundleless hair cells and subsequent bundle replacement in the bullfrog's saccule.
	www.jneurosci.org /cgi/content/full/23/14/6111 (7202 words)

	The Survival Function of the Bcr-Abl Oncogene Is Mediated by Bad-Dependent and -Independent Pathways: Roles for ...
		The Survival Function of the Bcr-Abl Oncogene Is Mediated by Bad-Dependent and -Independent Pathways: Roles for Phosphatidylinositol 3-Kinase and Raf -- Neshat et al.
		The Survival Function of the Bcr-Abl Oncogene Is Mediated by Bad-Dependent and -Independent Pathways: Roles for Phosphatidylinositol 3-Kinase and Raf
		Inhibition of PI3-kinase interferes with the survival function of Bcr-Abl.
	mcb.asm.org /cgi/content/full/20/4/1179 (5840 words)

	[No title]
		The survival function is completely determined by the hazard function and vice versa.
		Adjusted survival curves for the white and fl subjects in the study are given in REF _Ref36207860 \h Figure 3.
		Notes In computing adjusted survival functions, the covariates are often set equal to their mean or median.
	www.public-health.uiowa.edu /bsmith/bios242/BaselineEst.doc (1315 words)

	Disparities in Cancer Survival: A function of patient characteristics, diagnosis, or treatment? (Site not responding. Last check: 2007-10-15)
		Disparities in Cancer Survival: A function of patient characteristics, diagnosis, or treatment?
		The analyses focused on breast cervical, colon, lung and prostate cancers Our primary outcomes of interest are: stage at diagnosis, survival, and receipt of state-of-the art treatment.
		We use logistic regression to estimate the probability of late stage diagnosis and death and show of that both of theses outcomes is greater among those insured by Medicaid compared to a non Medicaid control group.
	apha.confex.com /apha/128am/techprogram/paper_6972.htm (396 words)

	[No title]
		Can not be used to determine the effect of a metric independent variable on survival, unless it is reduced to categories, which results in the loss of information.
		Hazard function Also called the hazard rate, a graph that illustrates how likely a parolee is to be revoked given that he/she has been successful up to time (t) This can also be broken out for cases with and without a prior probation violation.
		Survival Function The cumulative probability of survival as a function of time for both groups combined.
	www.shsu.edu /~icc_cmf/cj_789/coxRegression.doc (1366 words)

	Donor Tissue Characteristics Influence Cadaver Kidney Transplant Function and Graft Survival but Not Rejection -- ...
		graft survival, censoring for death with a functioning graft.
		Moreover the survival of a kidney was strongly
		The function and survival of a kidney tends to be impaired when
	jasn.asnjournals.org /cgi/content/full/14/2/493 (3299 words)

	Recipients EFSD/MSD European Studies in Beta Cell Function & Survival Programme
		Analysis of the functional role of osteoprotegerin (OPG) in pancreatic islets
		The control of beta-cell function by ped/pea-15 gene and its abnormality in type 2 diabetes
		Role of SOCS proteins in beta cell function and survival
	www.europeandiabetesfoundation.org /MSD/EFSD-MSD-Recipients.html (165 words)

	2001-7 (Site not responding. Last check: 2007-10-15)
		We propose an estimator of the survival function when data are subject to dependent censoring.
		In addition to (right-censored) survival times we assume that we observe covariates for each individual that affect both the hazard of failure and the hazard of being censored.
		The observed data are re-weighted at each failure time according to a model for the cumulative hazard for being censored at some time greater than or equal to given each individual's covariates; then, a product-limit estimator is calculated using the weighted data.
	www.stat.uga.edu /tech_reports/tech.rpt.abs/01/2001-7.html (174 words)

	IIED Bookshop: Sustainable Shrimp Farming: Estimations of a Survival Function (Site not responding. Last check: 2007-10-15)
		IIED Bookshop: Sustainable Shrimp Farming: Estimations of a Survival Function
		Survival rates of farmed shrimp depend on a number of factors such as water quality, stocking densities and feed stock.
		The results indicate that the Thai shrimp sector is presently operating at a sub optimal level and there is scope for improvement.
	www.iied.org /bookshop/pubs/8139.html (118 words)

	[No title]
		There is a one-to-one relationship between the hazard function and the survival function.
		Estimation of the Hazard Function Techniques for estimating the hazard function tend to be more involved than, say, the Kaplan-Meier estimator of the survival function.
		Smooth estimates of the hazard and survival function for the treatment groups in the leukemia trial.
	www.public-health.uiowa.edu /bsmith/Bios242/Chapter4.doc (1804 words)

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