" 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 " "0" "kidney" "Other" "Other" "Glomerulo_Nephritis" "Glomerulo_Nephritis" "Other" "Other" "Other" "Other" "Other" "Other" "Other" "Other" "Glomerulo_Nephritis" "Glomerulo_Nephritis" "Glomerulo_Nephritis" "Glomerulo_Nephritis" "Acute_Nephritis" "Acute_Nephritis" "Glomerulo_Nephritis" "Glomerulo_Nephritis" "Acute_Nephritis" "Acute_Nephritis" "Other" "Other" "Acute_Nephritis" "Acute_Nephritis" "Acute_Nephritis" "Acute_Nephritis" "Other" "Other" "Acute_Nephritis" "Acute_Nephritis" "Other" "Other" "Other" "Other" "Glomerulo_Nephritis" "Glomerulo_Nephritis" "Other" "Other" "Polycystic_Kidney_Disease" "Polycystic_Kidney_Disease" "Other" "Other" "Acute_Nephritis" "Acute_Nephritis" "Acute_Nephritis" "Acute_Nephritis" "Acute_Nephritis" "Acute_Nephritis" "Acute_Nephritis" "Acute_Nephritis" "Glomerulo_Nephritis" "Glomerulo_Nephritis" "Acute_Nephritis" "Acute_Nephritis" "Glomerulo_Nephritis" "Glomerulo_Nephritis" "Glomerulo_Nephritis" "Glomerulo_Nephritis" "Acute_Nephritis" "Acute_Nephritis" "Acute_Nephritis" "Acute_Nephritis" "Polycystic_Kidney_Disease" "Polycystic_Kidney_Disease" "Glomerulo_Nephritis" "Glomerulo_Nephritis" "Other" "Other" "Other" "Other" "Polycystic_Kidney_Disease" "Polycystic_Kidney_Disease" "Polycystic_Kidney_Disease" "Polycystic_Kidney_Disease" 2.3 2.3 1.9 1.9 1.2 1.2 0.5 0.5 1.5 1.5 1.1 1.1 3 3 0.5 0.5 0.7 0.7 0.4 0.4 0.6 0.6 1.2 1.2 1.4 1.4 0.4 0.4 0.4 0.4 1.1 1.1 0.8 0.8 0.8 0.8 0.5 0.5 1.3 1.3 0.2 0.2 0.6 0.6 1.7 1.7 1 1 0.7 0.7 0.5 0.5 1.1 1.1 1.8 1.8 1.5 1.5 1.5 1.5 1.7 1.7 1.3 1.3 2.9 2.9 0.7 0.7 2.2 2.2 0.7 0.7 2.1 2.1 1.2 1.2 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 16 16 17 17 18 18 19 19 20 20 21 21 22 22 23 23 24 24 25 25 26 26 27 27 28 28 29 29 30 30 31 31 32 32 33 33 34 34 35 35 36 36 37 37 38 38 8 16 23 13 22 28 447 318 30 12 24 245 7 9 511 30 53 196 15 154 7 333 141 8 96 38 149 70 536 25 17 4 185 177 292 114 22 159 15 108 152 562 402 24 13 66 39 46 12 40 113 201 132 156 34 30 2 25 130 26 27 58 5 43 152 30 190 5 119 8 54 16 6 78 63 8 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 1 0 0 1 0 1 0 1 1 1 1 0 0 1 0 1 1 1 0 1 1 1 0 1 1 0 1 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 0 1 1 0 0 0 1 1 0 28 28 48 48 32 32 31 32 10 10 16 17 51 51 55 56 69 69 51 52 44 44 34 34 35 35 42 42 17 17 60 60 60 60 43 44 53 53 44 44 46 47 30 30 62 63 42 43 43 43 57 58 10 10 52 52 53 53 54 54 56 56 50 51 57 57 44 45 22 22 42 42 52 52 60 60 "male" "male" "female" "female" "male" "male" "female" "female" "male" "male" "female" "female" "male" "male" "female" "female" "female" "female" "male" "male" "female" "female" "female" "female" "female" "female" "female" "female" "female" "female" "male" "male" "female" "female" "female" "female" "female" "female" "female" "female" "male" "male" "female" "female" "female" "female" "female" "female" "male" "male" "female" "female" "female" "female" "female" "female" "male" "male" "female" "female" "female" "female" "female" "female" "female" "female" "female" "female" "female" "female" "female" "female" "female" "female" "male" "male" "patient" "time" "status" "age" "sex" "disease_type" "frailty" "int0" "sex" "disease_type" "double1" "numeric" "numeric" "nominal:0,1" "numeric" "nominal:female,male" "nominal:Acute_Nephritis,Glomerulo_Nephritis,Other,Polycystic_Kidney_Disease" "numeric"