NAME: 	
Heart Disease Survival [Nested Case-Control] (WHASNCC2.DAT)

SIZE:	
1638 observations, 11 variables

SOURCE:	
Hosmer, D.W. and Lemeshow, S. and May, S. (2008) 
Applied Survival Analysis: Regression Modeling of Time to Event Data: Second
Edition, John Wiley and Sons Inc., New York, NY

REFERENCE:
Hosmer, D.W. and Lemeshow, S. and May, S. (2008) 
Applied Survival Analysis: Regression Modeling of Time to Event Data: Second
Edition, John Wiley and Sons Inc., New York, NY

DESCRIPTIVE ABSTRACT:
Description of the variables in the nested case-control exercise 
in the Exercises at the end of Chapter 9 of reference text.
Note that five controls per case were selected.

DISCLAIMER: 
This data has been downloaded from the following Wiley's FTP site:   
ftp://ftp.wiley.com/public/sci_tech_med/survival


LIST OF VARIABLES: 

Variable	Name		Description		           Codes/Values
********************************************************************************************
1               SET            Case-Control Set                    1 - 273
2               CASE           Case-Control Status                 0 = Control
                                                                   1 = Case
3               T              Ties Broken LENFOL                  T = LENFOL if FSTAL = 0
                                                                   T = LENFOL - U(0,1)
                                                                     if FSTAL = 1
4               LENFOL         Total Length of Follow-up           Days
                                 from Hospital Admission
5               FSTAT          Status as of Last                   0 = Alive
                                 Follow-up                         1 = Dead
6               AGE            Age (per chart)                     years
7               SEX            Gender                              0 = Male
                                                                   1 = Female
8               BMI            Body Mass Index                     kg/m^2
9               CHF            Left Heart Failure                  0 = No
                                 Complications                     1 = Yes
10              MIORD          MI Order                            0 = First
                                                                   1 = Recurrent
11              NR             Number of Subjects                  81 - 645
                                 in the Sampled Risk Set