Table II.
Trends in the characteristics of patients undergoing cardiac procedures: Worcester Heart Attack Study
| Cardiac Catheterization | PCI | CABG | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Year | 1986/88 | 1993/95 | 2001/03 | P value for trend | 1986/88 | 1993/95 | 2001/03 | P value for trend | 1986/88 | 1993/95 | 2001/03 | P value for trend |
| Age (years) | % | % | % | % | % | % | % | % | % | |||
| <55 | 43.6 | 60.3 | 82.4 | <.001 | 8.1 | 25.2 | 63.24 | <.001 | 3.3 | 5.2 | 6.2 | <.001 |
| 55–64 | 33.3 | 50.6 | 70.9 | 2.5 | 19.1 | 51.9 | 2.5 | 7.9 | 8.6 | |||
| 65–74 | 23.6 | 38.6 | 64.6 | 2.3 | 13.0 | 38.2 | 2.0 | 5.2 | 12.6 | |||
| 75–84 | 8.6 | 22.9 | 42.1 | 0 | 7.5 | 24.9 | 0.7 | 3.5 | 6.3 | |||
| ≥85 | 0.7 | 2.8 | 19.8 | 0 | 1.4 | 13.4 | 0 | 0 | 0.9 | |||
| Sex | ||||||||||||
| Male | 28.8 | 41.8 | 60.1 | <.01 | 3.4 | 15.3 | 41.0 | 0.07 | 1.9 | 5.3 | 8.4 | 0.49 |
| Female | 15.8 | 27.7 | 43.7 | 1.0 | 10.4 | 28.3 | 1.9 | 3.7 | 5.2 | |||
| Payment Method | ||||||||||||
| Private Payment | 42.8 | 46.2 | 61.9 | <.001 | 0 | 18.5 | 45.2 | <.001 | 3.6 | 1.5 | 7.2 | <.01 |
| Private Insurance | 37.4 | 52.8 | 74.2 | 7.2 | 19.5 | 51.6 | 1.2 | 3.5 | 9.7 | |||
| Blue Cross | 38.0 | 43.0 | 67.1 | 6.5 | 19.8 | 50.0 | 3.2 | 3.3 | 7.0 | |||
| Medicaid | 18.5 | 52.3 | 82.9 | 3.7 | 18.2 | 50.0 | 0 | 9.1 | 11.4 | |||
| Medicare | 13.0 | 27.8 | 40.2 | 0.2 | 9.7 | 25.3 | 0.6 | 3.9 | 4.6 | |||
| HMO | 26.0 | 51.4 | 58.4 | 3.5 | 19.7 | 40.0 | 2.2 | 8.1 | 8.8 | |||
| Prehospital Delay | ||||||||||||
| <2 hrs | 30.1 | 43.8 | 61.3 | 0.33 | 3.5 | 19.7 | 43.6 | 0.30 | 2.3 | 2.5 | 7.1 | 0.30 |
| 2–3.9 hrs | 31.9 | 39.0 | 64.8 | 2.4 | 10.4 | 41.9 | 1.9 | 6.8 | 9.3 | |||
| 4–5.9 hrs | 21.6 | 37.3 | 63.5 | 3.4 | 15.9 | 41.7 | 1.1 | 4.0 | 6.1 | |||
| ≥6 hrs | 19.8 | 34.5 | 63.1 | 1.9 | 10.3 | 41.9 | 2.6 | 6.6 | 9.6 | |||
| BMI* | ||||||||||||
| <25 | 33.2 | 41.4 | 12.9 | 28.2 | 4.9 | 5.0 | ||||||
| 25–29.9 | 47.9 | 62.1 | 18.0 | 44.2 | 6.8 | 7.2 | ||||||
| ≥30 | 57.1 | 66.5 | 22.2 | 44.5 | 8.4 | 8.9 | ||||||
| Comorbidities | ||||||||||||
| Angina | ||||||||||||
| Yes | 25.2 | 36.1 | 53.6 | <.01 | 2.4 | 11.2 | 33.3 | 0.33 | 2.4 | 7.8 | 9.5 | 0.13 |
| No | 22.9 | 35.9 | 52.7 | 2.5 | 14.1 | 36.0 | 1.7 | 3.4 | 6.2 | |||
| Diabetes | ||||||||||||
| Yes | 19.3 | 34.3 | 49.8 | <.001 | 0.8 | 9.0 | 29.8 | <.001 | 1.7 | 6.8 | 8.5 | 0.24 |
| No | 24.9 | 36.6 | 54.4 | 3.0 | 14.9 | 38.2 | 2.0 | 3.8 | 6.2 | |||
| Heart Failure | ||||||||||||
| Yes | 5.2 | 19.5 | 28.5 | <.001 | 0 | 4.9 | 16.0 | <.01 | 1.0 | 4.1 | 3.5 | 0.97 |
| No | 24.6 | 39.6 | 60.6 | 2.8 | 15.1 | 41.6 | 2.0 | 4.8 | 8.1 | |||
| Stroke | ||||||||||||
| Yes | 12.8 | 22.2 | 32.5 | 0.65 | 4.8 | 5.7 | 18.8 | 0.54 | 1.6 | 3.6 | 3.1 | 0.48 |
| No | 24.6 | 37.5 | 55.8 | 2.2 | 14.1 | 37.7 | 1.9 | 4.7 | 7.5 | |||
| Hypertension | ||||||||||||
| Yes | 23.2 | 34.7 | 50.3 | <.001 | 2.7 | 11.5 | 31.9 | <.001 | 2.0 | 5.5 | 7.0 | 0.10 |
| No | 23.8 | 37.7 | 59.2 | 2.2 | 15.6 | 44.1 | 1.8 | 3.5 | 7.0 | |||
| MI Order | ||||||||||||
| Initial | 23.8 | 38.4 | 57.1 | 0.46 | 3.4 | 15.1 | 39.9 | 0.23 | 1.9 | 4.6 | 7.7 | 0.28 |
| Recurrent | 22.8 | 31.9 | 45.3 | 0.4 | 10.2 | 27.2 | 2.0 | 4.6 | 5.7 | |||
| MI Type | ||||||||||||
| Q wave | 24.5 | 41.7 | 72.8 | <.001 | 3.4 | 18.7 | 58.6 | <.001 | 1.4 | 5.0 | 7.3 | <.01 |
| Non Q wave | 22.6 | 32.5 | 47.8 | 1.5 | 9.9 | 29.4 | 2.4 | 4.4 | 6.8 | |||
*
BMI data not recorded before 1993