Quality Assessment of Stroke Event Registration Data in the WHO MONICA Project

Appendix 1. Edit specifications for stroke events

(See Section 3, Table 4 and Appendix 2.)

General

The MONICA Data Centre (MDC) checks all stroke events core data received from the MONICA Collaborating Centres (MCC) according to these edit specifications at the time when the data are included into the MONICA database. All possible inconsistencies revealed in the data are reported to the MCC using Form H: Computer Generated Error Correction Form, or by other means if the number of possible errors in the data is very large.

Explanations for the edit specifications:

Every record entered into the MDC database is subjected to the constraints listed below. If the data do not meet the conditions of the constraint, an error message will be generated. Such error messages are printed on a Computer Generated Error Correction Form (Form: H)

Data values which do not meet the conditions of a constraint, are either incorrect or unusual. All data values printed on the Computer Generated Error Correction Form should be checked from the source of the data. However, such values should not be changed unless they can be shown to be incorrect.

Note! Item TYPE is called STYPE for technical reasons

DREG_LIMITS_3
DREG should be a date or 99MMYY or 9999YY or 999999 and between 010181 and today.
SEX_LIMITS_3
Accepted values for SEX are 1 and 2.
DBIRTH_LIMITS_3
DBIRTH should be a date or 99MMYY or 9999YY.
DONSET - DBIRTH should be more than 24 years and less than 75 years.
(Note the following iterpretations:
DBIRTH 99MMYY = 15MMYY
DBIRTH 9999YY = 3006YY
DONSET 99MMYY = 15MMYY.)
DONSET_LIMITS_3
DONSET should be a date or 99MMYY and at least 010181 and at most DREG.
(Note the following interpretations:
DONSET 99MMYY = 01MMYY
DREG 99MMYY = 28MMYY
DREG 9999YY = 3112YY
DREG 999999 = today.)
MANAGE_LIMITS_3
Accepted values for MANAGE are 1,2,3,4,5 and 9.
SURVIV_LIMITS_3
Accepted values for SURVIV are 1 and 2 (Note that 9 is regarded as unusual).
SURVIV_DDEATH_3
DDEATH = 888888 <=> SURVIV = 1 or 9.
SURVIV_DDEATH_DONSET_3
If SURVIV = 2 and days of DONSET are known then DONSET < DDEATH < DONSET + 28 days.
If SURVIV = 2 and DONSET = 99MMYY then 01MMYY < DDEATH < 01MMYY + 58 days.
SURVIV_NECP_3
NECP = 8 <==> SURVIV = 1 or 9.
SURVIV_SURT_3
SURT = 88 <==> SURVIV = 1 or 9.
If SURVIV = 2 then 0 < SURT < 28 or SURT = 99.
TYPE_LIMITS_3
Accepted values for TYPE (STYPE) are 4300 to 4349, 4360 to 4369 and 9999.
TYPE_DIACAT_3
If DIACAT = 1 or 5 then 4300 < TYPE < 4349 or 4360 < TYPE < 4369.
if DIACAT = 4 then TYPE = 9999.
if DIACAT = 9 then 4360 < TYPE < 4369 or TYPE = 9999
(Other types are acceptable but rare).
TYPE_NECD_3
If NECD1 or NECD2 or NECD3 = 4301 then TYPE should be 4301
DIACAT_LIMITS_3
Accepted values for DIACAT are 1,4,5 and 9.
DIACAT_NECD_3
If NECD1 or NECD2 or NECD3 = 4300 to 4319 or 4330 to 4349 or 4360 to 4369 then DIACAT=1,5 or 9
NOTE! This check is NOT done if any of the NECD:s (NECD1-NECD3) falls into following categories:
1910 to 1929 or
1983 to 1984 or
2030 to 2099 or
8500 to 8549 when ICDVER=1
OR
1910 to 1929 or
1983 to 1984 or
2030 to 2089 or
8500 to 8549 when ICDVER=2 or 3.
DIACAT_SURVIV_3
If SURVIV = 1 then DIACAT = 1,4 or 5 (DIACAT = 9 is possible but very uncommon).
DIACAT_EXAM_NECD_3
If DIACAT = 1 or 5 then EXAM1 = 1 or EXAM2 = 1 or NECD1 or NECD2 or NECD3 = 4300 to 4349 or 4360 to 4369.
EXAM1_LIMITS_3 - EXAM11_LIMITS_3
Accepted values for items EXAM1-EXAM11 are 1,2 and 9.
IATRO_LIMITS_3
Accepted values for IATRO are 1,2 and 9.
PRESTR_LIMITS_3
Accepted values for PRESTR are 1,2,3,4 and 9.
DDEATH_LIMITS_3
DDEATH should be a date or 888888.
SURT_LIMITS_3
0 < SURT < 27 or SURT = 88 or 99.
NECP_LIMITS_3
Accepted values for NECP are 1,2,4,8 and 9.
NECP_NECD_3
NECP = 4,8 or 9 <==> NECD1 and NECD2 and NECD3 = 8888.
ICDVER_LIMITS_3
Accepted values for ICDVER are 1 and 2.