Differences between classification systems in 30 day survival following a confirmed myocardial infarct
| Survival (95% CI) by classification system† | |||||
|---|---|---|---|---|---|
| Age range (years) | NHAR | NHAR extended | MONICA | UKHAS | OXMIS |
| *Significant differences in survival between NHAR and alternative classification systems. | |||||
| †Comparisons only reported for the age ranges used in major publications. | |||||
| CI, confidence interval; NHAR, Nottingham heart attack register; MONICA, monitoring trends and determinants in cardiovascular disease study; OXMIS, Oxford myocardial infarction study; UKHAS, United Kingdom heart attack study. | |||||
| <65 (n=941) | 87% (83 to 91) | – | 91% (88 to 96) | – | – |
| <76 (n=1959) | 82% (79 to 85) | – | – | *88% (85 to 91) | – |
| <80 (n=2250) | 78% (75 to 81) | – | – | – | *84% (82 to 87) |
| All (n=2753) | 77% (74 to 80) | *85% (83 to 87) | – | – | – |