Purpose
Specifies the variable which contains the entry (left truncation) time for each subject.
Programs
PEANUTS
Syntax
ENTRY vname @
NOENTRY
Arguments and Subcommands
vname
The entry time variable. If vname is omitted, it is assumed that all subjects enter the study at time 0.
Remarks
The ENTRY command is optional. If it is not given, all subjects are assumed to have been followed from time zero. ENTRY is not a key word and no search of the variable list is made for a variable of this name. The entry variable must be explicitly defined. The ENTRY variable can be dropped using either the NOENTRY command or the command ENTRY @.
Example
To indicate that the timein variable contains the time of entry into the cohort:
ENTRY timein