Follow-up Information

There is no need for these data to updated periodically.

There is generally one observation for each participant in this follow-up project.

Data were collected in 1989 and 1990 by the MayaTech Corporation for the BLSA.

The variable VISIT is, in fact, follow-up number. For this project, all should be "1."

This information type is comparable to Visit Information, Information Type 000, in the traditional BLSA Master File.

                                          The SAS System        09:22 Friday, October 30, 1998
                                        CONTENTS PROCEDURE
         Data Set Name: LIBRARY.IN1FD000                       Observations:         426
         Member Type:   DATA                                   Variables:            8
         Engine:        REMOTE                                 Indexes:              0
         Created:       10:47 Wednesday, May 13, 1998          Observation Length:   64
         Last Modified: 10:47 Wednesday, May 13, 1998          Deleted Observations: 0
         Protection:                                           Compressed:           NO
         Data Set Type:                                        Sorted:               NO
         Label:
                           -----Engine/Host Dependent Information-----
           Data Set Page Size:       9728
           Number of Data Set Pages: 3
           File Format:              607
           First Data Page:          1
           Max Obs per Page:         151
           Obs in First Data Page:   130
           Filename:                 DISK$BETA14:[BLS$CDS.BLS$F1DF]IN1FD000.SASEB$DATA
           Host Format:              AXP
           Disk Blocks Allocated:    63
                      -----Alphabetic List of Variables and Attributes-----
                #    Variable    Type    Len    Pos    Label
                
                4    DAOFB       Num       8     24    0000103 day of birth
                7    DAOFF       Num       8     48    0000111 day of follow-up
                1    IDNO        Num       8      0
                3    MOOFB       Num       8     16    0000101 month of birth
                6    MOOFF       Num       8     40    0000109 month of follow-up
                2    VISIT       Num       8      8
                5    YEOFB       Num       8     32    0000105 year of birth
                8    YEOFF       Num       8     56    0000113 year of follow-up