Coronary revascularisation need applied to 1998 England mid-year population compared with a model based on current patterns of investigation and treatment in England (men and women aged 45–84 years)
| Presentation | Total numbers of patients at each step for all three presentations | |||||||
|---|---|---|---|---|---|---|---|---|
| Chronic stable angina | AMI | Unstable angina | ||||||
| Step | Current practice | Model of need | Current practice | Model of need | Current practice | Model of need | Current practice | Model of need |
| Rates and proportions are weighted by age and sex, except referrals for angiography where age and sex specific data were not available. | ||||||||
| AMI, acute myocardial infarction. | ||||||||
| 1. Proportion (number) of total population (45–84 years) developing new clinical presentation | 1.6% (n=293000) | 1.6% (n=293000) | 0.5% (n=82700) | 0.5% (n=82700) | 0.5% (n=85700) | 0.5% (n=85700) | 2.5% (n=461400) | 2.5% (n=461400) |
| 2. Proportion of incident cases referred to secondary care | 33% | 72% | 69% | 74% | 100% | 100% | 240400 | 356400 |
| 3. Proportion surviving to angiography | 98% | 100% | 85% | 90% | 97% | 97% | 227900 | 347600 |
| 4. Proportion of those referred to secondary care undergoing angiography | 30% | 51% | 8% | 30% | 27% | 50% | 55100 | 164900 |
| 5. Proportion of those in whom angiography shows obstructive coronary disease | 72% | 75% | 86% | 86% | 78% | 78% | 41489 | 126820 |
| 6. Proportion of those with obstructive coronary disease undergoing revascularisation | 64% | 73% | 64% | 61% | 69% | 75% | 27465 | 92000 |
| Model predictions of revascularisation rate (per million total population) | 269 | 1192 | 43 | 175 | 243 | 494 | 555 | 1861 |
| Proportion of people developing new clinical presentation predicted to undergo revascularisation | 5% | 20% | 3% | 10% | 14% | 29% | 6% | 20% |