survival curve

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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

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 ?
In the base case analysis, the survival curves from the high-volume subgroup in the CHAARTED study were used to estimate time to CRPC and OS for each treatment group.
At a salinity of 4, log rank tests comparing survival curves indicated a significant overall difference among mating pairs (P = 0.025), yet post hoc pairwise comparisons failed to identify any significant differences (P> 0.06) (Fig.
Comparison of survival curves of urgent-start peritoneal dialysis patients with different primary diseases.
Kaplan-Meier survival curves were further calculated and were used to compare different survival among groups.
Two survival curves compared the incidence of dementia related to wealth and LIBRA score.
The representation of the drivers' speed reduction patterns was possible by plotting the survival curves with the use of the estimated coefficients of the average deceleration and the countermeasures condition.
The Kaplan-Meyer method was used to draw survival curves and estimate the survival rates at 1, 5, 10, 15, and 20 years of follow-up and median survival times with 95% confidence intervals.
The survival curves in this study show persistent reduction in the survival estimates with time suggestive of the development of late events with the event-free survival (EFS) dropping from 66% at 10 years to 58% at 15 years and then to 44% at 20 years.
Finally, in Figure 3 (a), Kaplan-Meier survival curves for LILRE, where survival curves are split by the median value of LILRE, and in Figure 3(b), the effect of the use of chemotherapy (CHT) are shown.

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