Coronary Event Registration Data Book 1980-1995

Appendix 1. Definitions for the classification of coronary events

(See Section 4.1.)

diagnostic category diagnostic findingsa
ECG enzymes symptoms autopsy previous CHD other
NF1 or F1 1 any any any any
2 1 1,2,5
3,5,9 1 1
any any any 1
F2 not fulfilling criteria for F1 any 2
1,2,5 8,9
3,4,9 8,9 1 no competing diagnosis
F9 9 9 3,4,9 8,9 2,9
NF2 probable MI 2 2,3,4,5,9 1 8 any
4 1
3,4,5,9 2
prolonged chest pain not compatible with definite MI
or nonfatal probable MI
NF3 not fulfilling criteria for NF1 or NF2 8 any spontaneous cardiac arrest
other fatal event not fulfilling criteria for F1 any 4 any
3,4,9b 8,9 any other diagnosis
other non-fatal event not fulfilling criteria for NF1 or NF2 8 any no spontaneous cardiac arrest
a diagnostic findings
ECG : 1=definite, 2=probable, 3= ischaemic, 4= other, 5=uncodable, 9=insufficient data
Enzymes : 1=abnormal, 2=equivocal, 3= non-specific, 4= normal, 5=incomplete, 9=insufficient data
Symptoms : 1=typical, 2= atypical, 3=other, 4=none, 5=inadequately described, 9= insufficient data
Autopsy : 1=definite, 2=equivocal, 4=negative, 8=no necropsy/or alive, 9=insufficient data
Previous CHD (combined items PREMI and HISIHD, called PREHIS in the MONICA manual) : 1=yes, 2=no, 9=insufficient data

b other diagnosis prevents the use of symptom codes 1, 2 and 5