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Kidney (M vs F) data
The data set (and description) can be downloaded here:
http://lib.stat.cmu.edu/datasets/kidney
Description:
From: McGilchrist and Aisbett, Biometrics 47, 461-66, 1991
Data on the recurrence times to infection, at the point of insertion of
the catheter, for kidney patients using portable dialysis equipment.
Catheters may be removed for reasons other than infection, in which case
the observation is censored. Each patient has exactly 2 observations.
The data set has been used by several authors to illustrate random effects
("frailty") models for survival data. However, any non-zero estimate of the
random effect is almost entirely due to one outlier, subject 21.
Variables: patient, time, status, age,
sex (1=male, 2=female),
disease type (0=Glomerulo Nephritis, 1=Acute Nephritis,
2=Polycystic Kidney Disease, 3=Other)
author's estimate of the frailty
Descriptive statistics:
Dataset= kidney : n= 76 , d= 5
Class1: n= 20
Covariance matrix:
[,1] [,2] [,3] [,4] [,5]
[1,] 15896.4316 5.6105 172.7895 11.1579 -49.0453
[2,] 5.6105 0.0947 -1.7368 0.0000 0.0168
[3,] 172.7895 -1.7368 237.8421 -13.3158 -2.2684
[4,] 11.1579 0.0000 -13.3158 1.5263 -0.0053
[5,] -49.0453 0.0168 -2.2684 -0.0053 0.6746
Correlation matrix:
[,1] [,2] [,3] [,4] [,5]
[1,] 1.0000 0.1446 0.0889 0.0716 -0.4736
[2,] 0.1446 1.0000 -0.3659 0.0000 0.0666
[3,] 0.0889 -0.3659 1.0000 -0.6989 -0.1791
[4,] 0.0716 0.0000 -0.6989 1.0000 -0.0052
[5,] -0.4736 0.0666 -0.1791 -0.0052 1.0000
Median: 19.2844 0.9115 44.8794 1.2151 1.4107
Mean: 59.3 0.9 43.5 1.5 1.31
MCD-estimated:
MDC-0.975-Mean: 17.3574 0.9999 38.9285 1.4998 1.5643
MDC-0.750-Mean: 17.3574 0.9999 38.9285 1.4998 1.5643
MDC-0.500-Mean: 17.3574 0.9999 38.9285 1.4998 1.5643
Class2: n= 56
Covariance matrix:
[,1] [,2] [,3] [,4] [,5]
[1,] 16994.8455 19.0000 -377.7318 29.9818 -33.3809
[2,] 19.0000 0.2078 0.1143 0.0026 0.0732
[3,] -377.7318 0.1143 214.1088 -6.3740 1.3329
[4,] 29.9818 0.0026 -6.3740 1.4130 -0.0083
[5,] -33.3809 0.0732 1.3329 -0.0083 0.4068
Correlation matrix:
[,1] [,2] [,3] [,4] [,5]
[1,] 1.0000 0.3197 -0.1980 0.1935 -0.4015
[2,] 0.3197 1.0000 0.0171 0.0048 0.2519
[3,] -0.1980 0.0171 1.0000 -0.3665 0.1428
[4,] 0.1935 0.0048 -0.3665 1.0000 -0.0110
[5,] -0.4015 0.2519 0.1428 -0.0110 1.0000
Median: 65.7942 0.6124 46.1983 1.4296 1.1937
Mean: 116.75 0.7143 43.7679 1.5714 1.1393
MCD-estimated:
MDC-0.975-Mean: 132.9476 1.0002 43.2891 1.6051 1.2158
MDC-0.750-Mean: 132.9476 1.0002 43.2891 1.6051 1.2158
MDC-0.500-Mean: 132.9476 1.0002 43.2891 1.6051 1.2158
Measures:
Mah.Dist: 0.7593
Mah.Dist-MCD-0.975: 0.9351
Mah.Dist-MCD-0.750: 0.9006
Mah.Dist-MCD-0.500: 0.9006
Zuletzt geändert am 17.02.2013
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