TROMSO_STR3_TIME

Name: STR3_AGE

Description and values:

STR3_AGE gives the age (in years) at the time of exit from the follow-up of a likely haemorrhagic stroke.

The variable has no missing values.

Local variable explanation:

DIAHEMO: Diagnose of haemorrhagic stroke (1=definite)

DATOHEMO: Date of diagnose of haemorrhagic stroke

FLYTTEDATO: Date of relocation from town/municipality

DATE_T4: Date of examination

DATO_DOD: Date of death

fdato: date of death

SAS code:

If DIAGHEMO = 1 and (sign(DATOHEMO -'31dec2010'd)=1 or sign(DATE_T4 - DATOHEMO)=1) then do;

DIAGHEMO=.;

DATOHEMO=.;

end;

IF DIAGHEMO = 1 and sign(DATOHEMO-FLYTTEDATO)=1 then do;

STR3_EXIT=FLYTTEDATO;

end;

ELSE IF DIAGHEMO = 1 and .<(DATO_DOD -DATOHEMO)<=28 then do;

STR3_EXIT=DATOHEMO;

end;

else if DIAGHEMO = 1 then do; 

STR3_EXIT=DATOHEMO;

end;

else do;

STR3_EXIT=min(FLYTTEDATO,dato_dod,'31dec2010'd);

end;

STR3_TIME=STR3_EXIT-DATE_T4;

MORGAM_STR3_TIME

This is obtained from the MORGAM derived variable STRTIME5.

If STRTIME5 = 88888 or 99999, STR3_TIME is coded "0" .