log-rank test


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log-rank test

a measurement used to compare two or more sets of data on survival times. The data are completed lifetimes of deceased patients and current ages of those still living.
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Survival curves (without adjustment) were plotted using the Kaplan--Meier method and compared between risk-stratification groups using the log-rank test.
The log-rank test showed a statistically significant difference between survival curves (chi-square=9.
Formal testing between groups with the log-rank test, however, showed that duration of delirium between groups was only marginally significant (chi-square 3.
ulcerans lesion were compared by using the Fisher exact test, and cumulative healing was compared by using the log-rank test.
A log-rank test was used to compare the survival curves between those who died prior to our arbitrary cut-off to the survival curve of those who died after our arbitrary cut-off.
There are expanded discussions on the relevant subjects of epistemic uncertainties, crossover designs, equivalence trials and studies, hazard functions, and the log-rank test.
placebo at 2 years; this finding, determined by a log-rank test, was statistically significant for all clinical fractures, nonvertebral fractures, and key nonvertebral fractures.