% 
% 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
% 		
% 
%
%
% Information about the dataset
% CLASSTYPE: numeric
% CLASSINDEX: last
%

@relation kidney

@attribute patient INTEGER
@attribute time INTEGER
@attribute status {0,1}
@attribute age INTEGER
@attribute sex {female,male}
@attribute disease_type {Acute_Nephritis,Glomerulo_Nephritis,Other,Polycystic_Kidney_Disease}
@attribute frailty REAL

@data
1,8,1,28,male,Other,2.3
1,16,1,28,male,Other,2.3
2,23,1,48,female,Glomerulo_Nephritis,1.9
2,13,0,48,female,Glomerulo_Nephritis,1.9
3,22,1,32,male,Other,1.2
3,28,1,32,male,Other,1.2
4,447,1,31,female,Other,0.5
4,318,1,32,female,Other,0.5
5,30,1,10,male,Other,1.5
5,12,1,10,male,Other,1.5
6,24,1,16,female,Other,1.1
6,245,1,17,female,Other,1.1
7,7,1,51,male,Glomerulo_Nephritis,3.0
7,9,1,51,male,Glomerulo_Nephritis,3.0
8,511,1,55,female,Glomerulo_Nephritis,0.5
8,30,1,56,female,Glomerulo_Nephritis,0.5
9,53,1,69,female,Acute_Nephritis,0.7
9,196,1,69,female,Acute_Nephritis,0.7
10,15,1,51,male,Glomerulo_Nephritis,0.4
10,154,1,52,male,Glomerulo_Nephritis,0.4
11,7,1,44,female,Acute_Nephritis,0.6
11,333,1,44,female,Acute_Nephritis,0.6
12,141,1,34,female,Other,1.2
12,8,0,34,female,Other,1.2
13,96,1,35,female,Acute_Nephritis,1.4
13,38,1,35,female,Acute_Nephritis,1.4
14,149,0,42,female,Acute_Nephritis,0.4
14,70,0,42,female,Acute_Nephritis,0.4
15,536,1,17,female,Other,0.4
15,25,0,17,female,Other,0.4
16,17,1,60,male,Acute_Nephritis,1.1
16,4,0,60,male,Acute_Nephritis,1.1
17,185,1,60,female,Other,0.8
17,177,1,60,female,Other,0.8
18,292,1,43,female,Other,0.8
18,114,1,44,female,Other,0.8
19,22,0,53,female,Glomerulo_Nephritis,0.5
19,159,0,53,female,Glomerulo_Nephritis,0.5
20,15,1,44,female,Other,1.3
20,108,0,44,female,Other,1.3
21,152,1,46,male,Polycystic_Kidney_Disease,0.2
21,562,1,47,male,Polycystic_Kidney_Disease,0.2
22,402,1,30,female,Other,0.6
22,24,0,30,female,Other,0.6
23,13,1,62,female,Acute_Nephritis,1.7
23,66,1,63,female,Acute_Nephritis,1.7
24,39,1,42,female,Acute_Nephritis,1.0
24,46,0,43,female,Acute_Nephritis,1.0
25,12,1,43,male,Acute_Nephritis,0.7
25,40,1,43,male,Acute_Nephritis,0.7
26,113,0,57,female,Acute_Nephritis,0.5
26,201,1,58,female,Acute_Nephritis,0.5
27,132,1,10,female,Glomerulo_Nephritis,1.1
27,156,1,10,female,Glomerulo_Nephritis,1.1
28,34,1,52,female,Acute_Nephritis,1.8
28,30,1,52,female,Acute_Nephritis,1.8
29,2,1,53,male,Glomerulo_Nephritis,1.5
29,25,1,53,male,Glomerulo_Nephritis,1.5
30,130,1,54,female,Glomerulo_Nephritis,1.5
30,26,1,54,female,Glomerulo_Nephritis,1.5
31,27,1,56,female,Acute_Nephritis,1.7
31,58,1,56,female,Acute_Nephritis,1.7
32,5,0,50,female,Acute_Nephritis,1.3
32,43,1,51,female,Acute_Nephritis,1.3
33,152,1,57,female,Polycystic_Kidney_Disease,2.9
33,30,1,57,female,Polycystic_Kidney_Disease,2.9
34,190,1,44,female,Glomerulo_Nephritis,0.7
34,5,0,45,female,Glomerulo_Nephritis,0.7
35,119,1,22,female,Other,2.2
35,8,1,22,female,Other,2.2
36,54,0,42,female,Other,0.7
36,16,0,42,female,Other,0.7
37,6,0,52,female,Polycystic_Kidney_Disease,2.1
37,78,1,52,female,Polycystic_Kidney_Disease,2.1
38,63,1,60,male,Polycystic_Kidney_Disease,1.2
38,8,0,60,male,Polycystic_Kidney_Disease,1.2