Table 8 Number of ECG deviations in 1993 electrocardiographic abnormalities and myocardial infarction and death in 964 middle-aged, employed men in 1993 followed for 25 years
Minnesota Code | Explanation | Investigated persons | Observed findings | Findings with death | Findings with infarct | p value death | p value infarct | ECG findings both in 1993 and 1998 |
|---|---|---|---|---|---|---|---|---|
Q and QS patterns | ||||||||
1:1 | Q and QS pattern (% with endpoint) | 964 | 3 | 1 (33) | 2 (67) | 0.000 | 2 | |
1:2 | Q, QS, and QSR pattern (% with endpoint) | 964 | 10 | 1 (10) | 2 (20) | 5 | ||
STJ and segment depression | ||||||||
4:1 or 4:2 | STJ depression (% with endpoint) | 947 | 5 | 4 (80) | 3 (60) | 0.000 | 0.000 | 1 |
T wave items | ||||||||
5:1 or 5:2 | T wave negative or biphasic (% w. endpoint) | 947 | 7 | 3 (43) | 2 (29) | 0.004 | 0.075 | 3 |
AV conduction defect | ||||||||
6:1 | Complete AV block | 964 | 0 | |||||
6:4:1 | Wolf-Parkinson-White pattern | 964 | 0 | |||||
6:8 | Artificial pacemaker | 964 | 0 | |||||
Ventricular conduction defect | ||||||||
7:1:1 | Complete left bundle branch block | 964 | 1 | 0 | 0 | 0 | ||
7:2:1 | Complete right bundle branch block | 964 | 7 | 1 (14) | 2 (29) | 4 | ||
7:3 | Incomplete RBB | 964 | 23 | 1 (4) | 5 (22) | 11 | ||
7:4 | Intraventricular block | 962 | 11 | 4 (36) | 1 (9) | 0.004 | 0 | |
7:6 | Incomplete LBB | 919 | 8 | 1 (13) | 1 (13) | |||