TROMSO_STR2

Name: STR2

Short description: Likely cerebral infarction

Type: Integer

Description and values:

• 1 = yes, fatal
• 2 = yes, non-fatal
• 3 = no event during follow-up

Local variable explanation:

DIAGISCH: Diagnose of ischemic cerebral infarction (1=definite)

DATOISCH: Date of diagnose of ischemic cerebral infarction

FLYTTEDATO: Date of relocation from town/municipality

DATE_T4: Date of examination

SAS code:

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

DIAGISCH=.;

DATOISCH=.;

end;

IF DIAGISCH = 1 and sign(DATOISCH-FLYTTEDATO)=1 then do; 

STR2=3;

end;

ELSE IF DIAGISCH = 1 and .<(DATO_DOD -DATOISCH)<=28 then do;

STR2=1;

end;

else if DIAGISCH = 1 then do;

STR2=2;

end;

else do;

STR2=3;

end;

NSWEDEN_STR2

if (TYPE1='432' OR TYPE1='433' OR TYPE1='434') AND (contact_age<age_strokediagn) and survival=2 then STR2=1;
if (TYPE1='432' OR TYPE1='433' OR TYPE1='434') AND (contact_age<age_strokediagn) and survival=1 then STR2=2;
if bbb ne 1 then STR2=3;
if str_hist1=1 and several_strokes=0 then str2=3;
if str2=. and several_strokes=0 then str2=3;
if str2=. and str3=2 then str2=3;
if (TYPE1='432' OR TYPE1='433' OR TYPE1='434') AND (contact_age<age_strokediagn) and survival=2 then STR2=1;
if (TYPE1='432' OR TYPE1='433' OR TYPE1='434') AND (contact_age<age_strokediagn) and survival=1 then STR2=2;
if bbb ne 1 then STR2=3;

TYPE1=type of stroke according to the ICD codes.
age_strokediagn is the age at stroke diagnosis.
survival=survival at day 28, 1=yes, 2=no.
bbb=1 means that the person exists in the stroke registry.
several_strokes: 1=person has had several strokes, 0=person has not had several strokes.

MORGAM_STR2

This was derived from the MORGAM derived variable STROKE3 using the following rule:

Note, when STROKE3 = 8 or 9, STR2_TIME will be zero.