survival curve

(redirected from survival curves)
Also found in: Encyclopedia.

curve

 [kerv]
a line that is not straight, or that describes part of a circle, especially a line representing varying values in a graph.
dose-effect curve (dose-response curve) a graphic representation of the effect caused by an agent (such as a drug or radiation) plotted against the dose, showing the relationship of the effect to changes in the dose.
growth curve the curve obtained by plotting increase in size or numbers against the elapsed time.
oxyhemoglobin dissociation curve a graphic curve representing the normal variation in the amount of oxygen that combines with hemoglobin as a function of the partial pressures of oxygen and carbon dioxide. The curve is said to shift to the right when less than a normal amount of oxygen is taken up by the blood at a given Po2, and to shift to the left when more than a normal amount is taken up. Factors influencing the shape of the curve include changes in the blood pH, Pco2, and temperature; the presence of carbon monoxide; alterations in the constituents of the erythrocytes; and certain disease states.
pulse curve sphygmogram.
Spee curve (curve of Spee) the anatomic curvature of the occlusal alignment of teeth, beginning at the tip of the lower canine, following the buccal cusps of the premolars and molars, and continuing to the anterior border of the ramus.
strength-duration curve a graphic representation of the relationship between the intensity of an electric stimulus at the motor point of a muscle and the length of time it must flow to elicit a minimal contraction; see also chronaxie and rheobase. In cardiac pacing it is useful in determining characteristics of a particular pacing electrode and determining the most efficient selection of pacing parameters for an appropriate safety margin.
survival curve a graph of the probability of survival versus time, commonly used to present the results of clinical trials, e.g., a graph of the fraction of patients surviving (until death, relapse, or some other defined endpoint) at each time after a certain therapeutic procedure.

survival curve

[sərvī′vəl]
Etymology: Fr, survivre, to survive; L, curvus, bent
a plot of the number or percentage of organisms surviving for a given period as a function of radiation dose.

survival curve

Epidemiology A curve that starts at 100% of the study population and shows the percentage of the population still surviving at successive times for as long as information is available. See Survival.

survival curve

In radiobiology, a dose response curve.
See also: curve
References in periodicals archive ?
The differences in the KM survival curves for these two pre-specified phase 2 sub-populations were not powered for, and did not achieve, statistical significance.
For congestive heart failure, however, highly statistically significant and clinically meaningful differences in survival curves persist after stratification (p [less than or equal to] .
The Kaplan-Meier survival curves did not display significant differences (p=0.
The Kaplan Meier survival curve of home-to-work travel duration of the sample data is shown in Figure 2.
Across age categories, the Kaplan-Meier survival curves were remarkably similar.
The survival curves (Figure 2) show that in the first phase of the pandemic (H1N1) 2009 outbreak, most EDs rapidly experienced noticeable increases in ILI, whereas the increase in ILI at ambulatory clinics occurred in fewer sites and was more gradual.
Like all medical reporters, I see Kaplan-Meier survival curves for dozens, possibly hundreds of study reports that I cover at medical meetings each year.
Thus, seed survival curves are cumulative normal distributions of negative slope, and they become straight lines when the viability percentage is transformed into probit (FINNEY, 1971).
The Kaplan-Meier Survival Curves shows that patients who received medium and high doses had statistically (P=0.
The Kaplan-Meier estimation method was used to compare the survival curves across race, and the log-rank test determined whether compared differences were statistically significant.
The log-rank (Mantel-Cox) test identified differences in the cumulative survival curves for all possible pairs of terminal nodes identified.
a longer follow-up, overall survival curves at 30 months are similar to the

Full browser ?