|Gene selection in microarray survival studies under possibly non-proportional hazards|
Daniela Dunkler, Michael Schemper and Georg Heinze
Bioinformatics, Volume 26, Issue 6, Pp. 784-790.
install.packages('survival') install.packages('coxphw')R may ask you to select an R-mirror site. Select the geographically most closest one.
|n||Number of values analysed|
|Minimm||Smallest value in dataset|
|Skewness||Assymetry of the data set (3. distribution moment)|
|Kurtosis||Peakedness of the dat set (4. distribution moment)|
|Geometric mean||Meaningful for ratio data|
|Median||Robust, outlier insensitive average|
|Median Absolute Deviation|
|1. Quartile||Value at lowest 25% of the data set|
|2. Quartile||= Median|
|3. Quartile||Value at highest 25% of the data set|
N.b: Boxplot often illustrate the 1.-3.-Quatile data range
|5% Percentile||Value at lowest 5% of the data set|
|n < 5% Percentile||Number of data values smaller 5%-Percentile|
|95% Percentile||Value at highest 5% of the data set|
N.b.: The Whisker in a Box-Whisker plot often illustrates the 5%-95%-data range
|n > 95% Percentile||Number of data values Larger 95%-Percentile|
N.b.: In a Box-Whisker plot often <5% as well as >95% are often displayed as min/max data points.
|Trimmed mean (10%)||Robust, outlier insensitive average|
|Trimmed mean (25%)||Robust, less outlier insensitive average|
|Winsorized mean (10%)||Robust, outlier insensitive average|
|Winsorized mean (25%)||Robust, less outlier insensitive average|
|Covar||Name of covariate, as defined in the input data table / file|
|coef||regression coefficient of the log model|
|exp(coef)||regresson coefficient => Hazard ratio|
which tells us wether the probability to experience the "event" is increased (>1) or decreased (<1).
|se||Standard error of hazard ratio|
which tells us, whether the finding is statistically significant (e.g. p<=0.05).
|Lower/Upper.95||5% confidence interval for hazard ratio|