TROMSO_STR_HIST2

Name: STR_HIST2

Description and values:

• 1 = yes
• 0 = no
• 9 = insufficient data

Code 1 if the baseline questionnaire/examination included questions which asked or were similar to the following, “have you ever been told by a doctor/health care professional that you have had a stroke?” or “have you ever had a stroke?” and the answer was in the affirmative.
Code 0 if such a question was included at baseline and the answer was negative.
Code 9 if such a question was not included at baseline or if it was included but not answered.

Local variable explanation:

*STROKE_T4 : *Do you have, or have you had a cerebral stroke/brain haemorrhage?

SAS code:

Str_hist2=STROKE_T4;

If STROKE_T4 EQ . then Str_hist2=9;   

SHARE_STR_HIST2

The variable STR_HIST2 is based on the SHARE variable ph006d4 (= response option 4).

PH006_ DOCTOR TOLD YOU HAD CONDITIONS
Please look at card 6. Has a doctor ever told you that you had any of
the conditions on this card? Please tell me the number or numbers of
the conditions.
IWER: CODE ALL THAT APPLY
1. A heart attack including myocardial infarction or coronary thrombosis or any other heart problem including congestive heart failure
2. High blood pressure or hypertension
3. High blood cholesterol
4. A stroke or cerebral vascular disease
5. Diabetes or high blood sugar
6. Chronic lung disease such as chronic bronchitis or emphysema
7. Asthma
8. Arthritis, including osteoarthritis, or rheumatism
9. Osteoporosis
10. Cancer or malignant tumour, including leukaemia or lympho ma, but excluding minor skin cancers
11. Stomach or duodenal ulcer, peptic ulcer
12. Parkinson disease
13. Cataracts
14. Hip fracture or femoral fracture
96. None
97. Other conditions, not yet mentioned

SENECA_STR_HIST2

Contact round 1:

STR_HIST2 is based on SENECA variables CHRDISYN (Chronic disease, yes/no) and STROKE (Stroke)

IF CHRDISYN= 1 (“Yes) or 2 (“No”) AND STROKE = 1 (“Yes) THEN DO STR_HIST2=1; END;

IF CHRDISYN =1 (“Yes) or 2 (“No”) AND STROKE = 2 (“No”) or (“Irrelevant”) THEN DO STR_HIST2=0; END;

IF CHRDISYN= 8 (“Irrelevant”) or 9 (“Don’t know/No answer”) or . OR STROKE=9 (“Don’t know/No answer”)  THEN DO STR_HIST2=.; END;

Contact round 2:

STR_HIST2 is based on SENECA variables FCHRDISY (Chronic disease, yes/no) and FSTROKE (Stroke)

IF FCHRDISY = 1 (“Yes) or 2 (“No”) AND FSTROKE = 1 (“Yes) THEN DO STR_HIST2=1; END;

IF FCHRDISY =1 (“Yes) or 2 (“No”) AND FSTROKE = 2 (“No”) or (“Irrelevant”) THEN DO STR_HIST2=0; END;

IF FCHRDISY = 8 (“Irrelevant”) or 9 (“Don’t know/No answer”) or . OR FSTROKE=9 (“Don’t know/No answer”)  THEN DO STR_HIST2=.; END;

Contact round 3:

STR_HIST2 is based on SENECA variables SCHRDISY (Chronic disease, yes/no) and SSTROKE (Stroke)

IF SCHRDISY=1 (“Yes”) AND SSTROKE=1 (“Yes”) THEN DO STR_HIST2=1; END;

IF SCHRDISY=0 (“No”) OR SSTROKE=2 (“No”) THEN DO STR_HIST2=0; END;

IF SCHRDISY=. OR SSTROKE=. THEN DO STR_HIST2=.; END;

NSWEDEN_STR_HIST2

STR_HIST2=9;
if prevst=2 then str_hist2=1;

prevst=previous stroke event, 1=yes, records seen, 2=yes, not verified by medical records, 3=no.

MORGAM_STR_HIST2

This is derived from the MORGAM variable HISSTR2 using the following rule:

.

HAPIEE_STR_HIST2

Can be created based on HAPIEE baseline variable h10c for self-reported physician diagnosis/hospitalisation for stroke. Source HAPIEE baseline questionnaire.  

Stata code 

gen str_hist2=0

replace str_hist2=1 if h10c==1 |  h10c==2 

replace str_hist2=9 if h10c==. |  h10c==9 

ESTHER_STR_HIST2

str_hist2 = p_apop;
if str_hist2 = . then str_hist2 = 9;

Source of p_apop is the variable E06APOP from the participant's baseline questionnaire.

EPIC_STR_HIST2

Description:
Self-reported history of stroke

Description of variables used:

STROKE: EPIC elderly Greece variable that shows prevalence of stroke (1=yes, 2= don't know, 0=no)

Coding rule:

Variable STR_HIST2 is identical to variable STROKE.
Furthermore, if STROKE is equal to 2 then STR_HIST2 is equal to 9.
If STROKE is a missing value then STR_HIST2 is equal to 0.

Stata script:

gen STR_HIST2= STROKE
recode STR_HIST2 2=9
recode STR_HIST2 .=0