pharynx.arff

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2009-11-03 15:26:35
Description

Pharynx (A clinical Trial in the Trt. of Carcinoma of the Oropharynx).
SIZE: 195 observations, 13 variables.
File contents

%
% !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
%
% Case number deleted. 
%
% As used by Kilpatrick, D. & Cameron-Jones, M. (1998). Numeric prediction
% using instance-based learning with encoding length selection. In Progress
% in Connectionist-Based Information Systems. Singapore: Springer-Verlag.
%
% !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
%
% Name:  Pharynx (A clinical Trial in the Trt. of Carcinoma of the Oropharynx).
% SIZE:  195 observations, 13 variables.
% 
% 
% 
% DESCRIPTIVE ABSTRACT:
% 
% The .dat file gives the data for a part of a large clinical trial
% carried out by the Radiation Therapy Oncology Group in the United States. 
% The full study included patients with squamous carcinoma of 15 sites in 
% the mouth and throat, with 16 participating institutions, though only data 
% on three sites in the oropharynx reported by the six largest institutions 
% are considered here. Patients entering the study were randomly assigned to 
% one of two treatment groups, radiation therapy alone or radiation therapy 
% together with a chemotherapeutic agent.  One objective of the study was to 
% compare the two treatment policies with respect to patient survival.
% 
% 
% 
% SOURCE:  The Statistical Analysis of Failure Time Data, by JD Kalbfleisch
%          & RL Prentice, (1980),  Published by John Wiley & Sons 
% 
% 
% 
% VARIABLE DESCRIPTIONS:
% 
% The data are in free format.  That is, at least one blank space separates 
% each variable in the .dat file.  The variables are as follows:
% 
% 
% Case:         Case Number
% Inst:         Participating Institution
% sex:          1=male, 2=female
% Treatment:    1=standard, 2=test
% Grade:        1=well differentiated, 2=moderately differentiated, 
%               3=poorly differentiated,  9=missing
% Age:          In years at time of diagnosis
% Condition:    1=no disability, 2=restricted work, 3=requires assistance with
%               self care, 4=bed confined,  9=missing
% Site:         1=faucial arch, 2=tonsillar fossa, 3=posterior pillar,
%               4=pharyngeal tongue, 5=posterior wall
% T staging:    1=primary tumor measuring 2 cm or less in largest diameter,
%               2=primary tumor measuring 2 cm to 4 cm in largest diameter with
%               minimal infiltration in depth, 3=primary tumor measuring more 
%               than 4 cm, 4=massive invasive tumor
% N staging:    0=no clinical evidence of node metastases, 1=single positive
%               node 3 cm or less in diameter, not fixed, 2=single positive
%               node more than 3 cm in diameter, not fixed, 3=multiple
%               positive nodes or fixed positive nodes 
% Entry Date:   Date of study entry: Day of year and year
% Status:       0=censored,  1=dead
% Time:         Survival time in days from day of diagnosis 
% 
% 
% 
% 
% 
% 
% STORY BEHIND THE DATA:
% 
% Approximately 30% of the survival times are censored owing primarily to 
% patients surviving to the time of analysis. Some patients were lost
% to follow-up because the patient moved or transferred to an institution not
% participating in the study, though these cases were relatively rare. From 
% a statistical point of view, an important feature of these data is the 
% considerable lack of homogeneity between individuals being studied. 
% Of course, as part of the study design, certain criteria for patient 
% eligibility had to be met which eliminated extremes in the extent of disease, 
% but still many factors are not controlled.
% 
% This study included measurements of many covariates which would be expected 
% to relate to survival experience. Six such variables are given in the data 
% (sex, T staging, N staging, age, general condition, and grade).   The site 
% of the primary tumor and possible differences between participating 
% institutions require consideration as well.
%      
% The T,N staging classification gives a measure of the extent of the tumor at 
% the primary site and at regional lymph nodes. T=1, refers to a small primary 
% tumor, 2 centimeters or less in largest diameter, whereas T=4 is a massive 
% tumor with extension to adjoining tissue. T=2 and T=3 refer to intermediate
% cases. N=0 refers to there being no clinical evidence of a lymph node 
% metastasis and N=1, N=2, N=3 indicate, in increasing magnitude, the extent of 
% existing lymph node involvement. Patients with classifications T=1,N=0; 
% T=1,N=1;  T=2,N=0; or T=2,N=1, or with distant metastases were excluded 
% from study.
% 
% The variable general condition gives a measure of the functional capacity of 
% the patient at the time of diagnosis (1 refers to no disability whereas
% 4 denotes bed confinement; 2 and 3 measure intermediate levels). The variable
% grade is a measure of the degree of differentiation of the tumor (the degree
% to which the tumor cell resembles the host cell) from 1 (well differentiated) 
% to 3 (poorly differentiated)
% 
% In addition to the primary question whether the combined treatment mode is
% preferable to the conventional radiation therapy, it is of considerable 
% interest to determine the extent to which the several covariates relate to
% subsequent survival.  It is also imperative in answering the primary question 
% to adjust the survivals for possible imbalance that may be present in the 
% study with regard to the other covariates. Such problems are similar to those 
% encountered in the classical theory of linear regression and the analysis of 
% covariance.  Again, the need to accommodate censoring is an important 
% distinguishing point. In many situations it is also important to develop 
% nonparametric and robust procedures since there is frequently little empirical
% or theoretical work to support a particular family of failure time 
% distributions.
% 

@relation 'pharynx'
@attribute Inst { 2, 5, 4, 6, 3, 1}
@attribute sex { 2, 1}
@attribute Treatment { 1, 2}
@attribute Grade { 1, 2, 3}
@attribute Age real
@attribute Condition { 1, 2, 3, 0, 4}
@attribute Site { 2, 4, 1}
@attribute T { 3, 2, 4, 1}
@attribute N { 1, 3, 0, 2}
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@attribute Status { 1, 0}
@attribute class real
@data
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4,1,2,3,84,1,4,1,3,12068,1,235
6,1,1,2,54,2,1,3,3,13368,1,255
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3,1,2,1,71,1,2,3,1,18468,1,216
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2,1,1,3,43,1,2,4,3,20768,1,480
5,1,2,2,52,1,4,4,3,21768,1,245
4,2,1,3,68,1,4,2,3,22768,0,1565
6,1,2,2,69,1,1,3,0,23368,1,560
3,2,2,3,65,3,1,3,0,25968,1,376
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2,1,2,2,63,1,2,4,3,28068,1,279
4,1,1,2,59,3,2,4,3,28268,1,144
3,1,1,1,75,1,2,3,1,28268,1,1092
6,1,1,1,65,2,1,3,3,28968,1,94
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2,2,1,2,72,2,2,3,1,30868,1,575
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3,1,2,2,59,1,4,2,2,2469,1,661
5,1,1,2,58,1,1,3,2,3569,1,546
3,1,2,2,50,1,1,4,0,4469,0,1766
2,1,1,1,60,1,1,3,0,4569,1,374
3,2,1,1,43,1,2,2,2,4969,0,1489
4,1,1,2,48,2,2,3,3,5169,0,1446
4,1,2,2,49,3,1,4,3,5669,1,74
3,1,1,1,44,1,1,3,1,2769,0,1609
2,1,1,1,77,1,1,4,1,8369,1,301
2,1,1,1,75,1,2,4,1,9369,1,328
3,1,1,1,54,1,1,3,3,11869,1,459
3,1,1,1,68,1,1,4,0,12569,1,446
6,1,2,3,58,1,4,3,2,12769,0,1644
2,1,2,3,66,1,2,4,3,12969,1,494
3,1,2,1,47,1,1,3,2,13269,1,279
5,1,1,2,60,1,4,3,2,13569,1,915
2,1,1,2,66,1,4,4,2,14369,1,228
3,1,1,3,51,1,1,3,3,15569,1,127
2,2,1,1,49,1,1,3,0,15669,1,1574
6,1,1,1,50,1,2,4,0,16669,1,561
2,2,1,1,52,1,4,4,3,16769,1,370
2,1,2,2,40,1,4,4,3,17869,1,805
4,1,2,2,69,1,1,3,3,19969,1,192
5,1,2,2,56,1,2,1,3,20469,1,273
5,2,2,3,70,2,4,4,3,20469,0,1377
3,2,2,3,47,1,4,3,2,23069,1,407
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3,2,2,1,68,1,4,3,1,26869,0,1317
2,1,1,2,90,1,4,3,3,28069,1,517
3,2,1,3,44,1,4,3,2,28969,0,1307
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4,1,1,2,67,1,2,3,1,30469,1,763
5,2,1,2,58,2,4,4,3,30469,1,172
4,1,2,2,69,1,1,3,2,32869,0,1455
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6,1,2,3,58,1,2,3,3,33069,1,544
3,1,1,1,72,1,4,3,3,33269,1,800
6,1,1,2,72,1,1,3,0,33569,0,1460
6,1,1,3,70,1,4,2,3,33669,1,785
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3,2,2,1,73,1,1,3,0,36369,1,432
1,1,2,2,50,1,4,3,3,870,0,1312
6,1,2,2,63,2,1,3,0,4270,1,351
2,2,1,1,58,1,2,1,3,4470,1,205
1,2,1,2,56,1,4,3,0,4870,0,1219
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3,2,1,1,55,1,4,2,2,5470,1,666
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1,2,1,2,67,1,2,3,2,8270,1,477
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2,1,2,3,55,1,2,2,2,11070,0,1312
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2,1,1,1,65,1,1,4,3,12470,1,112
1,2,2,2,50,1,2,4,3,13170,1,308
5,1,2,2,61,2,4,4,3,14470,1,15
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3,1,1,2,61,1,1,3,1,16670,0,1086
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3,1,1,2,68,1,1,2,3,32770,1,637
6,1,1,3,58,2,2,3,3,33370,1,112
6,2,1,1,68,1,4,3,3,33670,0,1095
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4,1,1,2,74,1,1,3,0,34270,0,943
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6,1,2,2,60,1,2,1,2,34470,0,928
3,1,1,3,58,1,2,3,2,35570,0,918
3,1,1,2,66,1,1,1,2,36270,0,825
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2,1,1,2,39,1,4,3,3,1571,1,99
2,1,1,1,54,1,1,4,1,1871,0,933
6,1,2,3,49,1,2,2,3,2271,1,461
6,1,2,2,52,1,1,3,1,2671,1,347
1,1,1,2,35,2,4,3,0,3371,1,372
5,1,2,3,44,1,2,4,3,4371,0,731
5,1,1,?,81,1,4,3,3,4971,1,363
1,1,2,2,74,2,1,3,0,6771,1,238
4,1,2,2,65,1,4,4,3,7571,0,593
2,2,1,2,66,2,4,4,3,7771,1,219
3,1,1,2,74,2,4,3,2,8871,1,465
1,2,2,3,90,0,2,3,0,10571,1,446
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5,1,2,2,63,1,1,4,1,15371,1,532
2,2,2,2,61,1,4,4,1,15471,1,154
2,1,2,1,67,1,1,4,3,15971,1,369
4,1,1,2,88,1,2,3,0,16171,1,541
5,2,2,3,69,2,4,4,0,18371,1,107
2,1,2,2,46,1,1,4,1,18871,0,854
1,1,1,2,69,1,1,2,2,20171,0,822
6,2,1,2,48,1,2,3,0,20271,1,775
2,1,1,1,77,1,1,4,0,20271,1,336
6,1,2,3,69,1,2,1,3,20271,1,513
6,1,2,3,75,1,4,3,3,20971,0,914
5,1,1,2,71,1,4,4,3,21671,1,757
5,2,1,2,58,1,1,4,3,21871,0,794
3,1,2,2,66,2,2,3,2,22171,1,105
5,2,1,1,44,1,2,4,1,23771,0,733
1,2,2,2,59,1,1,3,1,25371,0,600
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2,2,2,1,58,2,1,4,3,27371,1,317
2,1,2,3,65,1,4,3,3,28071,1,407
6,2,2,2,53,2,4,3,2,28471,1,346
3,1,2,2,49,1,4,2,2,29471,1,518
1,1,2,2,65,1,2,3,2,29971,1,395
5,1,1,1,59,1,1,4,1,31471,1,81
6,2,2,2,79,1,4,2,2,31971,1,608
6,1,1,1,57,1,2,4,3,32171,0,760
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1,1,1,2,68,1,1,4,1,33071,1,254
2,1,1,3,63,1,4,2,2,34071,0,751
2,1,1,3,72,1,2,3,3,34271,1,334
6,2,2,1,51,2,2,3,1,34771,1,275
5,2,2,1,43,1,2,3,3,1272,0,546
6,2,2,2,43,2,4,3,3,3572,1,112
1,1,2,2,65,4,4,2,3,4672,0,182
1,1,2,2,54,1,1,4,3,5472,1,209
6,1,2,3,50,1,2,4,3,5572,1,208
2,1,2,2,39,1,1,4,3,5672,1,174
2,1,1,1,46,1,1,4,0,5972,0,651
2,1,2,3,49,1,2,3,3,8072,0,672
1,2,2,2,52,2,1,3,2,8272,1,291
1,2,2,2,69,2,4,4,1,13671,0,723
4,2,1,2,55,1,2,3,0,14372,1,498
4,1,2,2,48,2,2,3,0,14372,0,276
1,1,1,2,20,1,4,2,3,15672,0,90
4,2,1,2,47,1,4,3,3,15772,1,213
5,2,2,2,67,2,4,3,0,20572,1,38
4,2,1,2,66,2,2,3,2,20772,1,128
2,1,1,1,60,1,2,3,0,20972,0,445
2,1,1,1,54,1,2,4,3,22772,1,159
5,1,2,2,54,1,1,3,3,24372,1,219
4,1,2,2,59,2,1,4,0,24872,1,173
5,1,2,3,47,1,1,3,3,27672,0,413
3,1,2,2,57,2,1,3,3,12371,1,274

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