Table 2.
Factors associated with occurrence of stroke in patients with acute myocardial infarction (AMI) (Worcester Heart Attack Study)
| Characteristic* | Odds Ratio (95% CI) | Odds Ratio (95% CI) | Odds Ratio (95% CI) |
|---|---|---|---|
| Age (yrs) | |||
| 55–64 | 0.94 (0.39, 2.23) | 1.16 (0.42, 3.13) | 1.71 (0.80, 3.66) |
| 65–74 | 1.82 (0.88, 3.74) | 2.35 (1.00, 5.51) | 2.43 (1.14, 5.15) |
| ≥75 | 2.81 (1.43, 5.53) | 3.37 (1.49, 7.62) | 2.25 (1.84, 5.98) |
| Female | 1.66 (1.15, 2.39) | 1.92 (1.28, 2.86) | 2.11 (1.24, 3.58) |
| No not resuscitate order | |||
| Length of hospital stay | |||
| Medical history | |||
| Angina pectoris | 0.59 (0.36, 0.96) | 0.82 (0.45, 1.51) | |
| Diabetes mellitus | 0.85 (0.56, 1.30) | 0.87 (0.48, 1.57) | |
| Hypertension | 1.10 (0.72, 1.65) | 1.02 (0.60, 1.77) | |
| Heart failure | 0.77 (0.47, 1.24) | 0.56 (0.28, 1.26) | |
| Atrial fibrillation | 1.41 (0.84, 2.39) | 1.14 (0.53, 2.45) | |
| AMI characteristics | |||
| Initial | 0.61 (0.41, 0.90) | 0.50 (0.29, 0.86) | |
| Q-wave | 1.19 (0.78, 1.81) | 1.02 (0.57, 1.82) | |
| Anterior | 0.91 (0.58, 1.42) | 1.02 (0.57, 1.79) | |
| Clinical complications | |||
| Atrial fibrillation | 2.52 (1.42, 4.45) | ||
| Heart failure | 0.87 (0.50, 1.51) | ||
| Cardiogenic shock | 1.21 (0.42, 3.48) | ||
| In-hospital thrombolytic therapy | 1.45 (0.75, 2.79) | ||
| Intervention procedures | |||
| Cardiac catheterization | 0.65 (0.30, 1.38) | ||
| Percutaneous coronary intervention | 0.91 (0.37, 2.22) | ||
| Coronary artery bypass surgery | 1.53 (0.51, 4.63) |
*
Respective referent categories = age<55 years, male sex, absence of selected medical history variables, prior AMI, Non-Q-wave AMI, inferior or posterior AMI, absence of selected clinical complications, absence of selected prescribed medications, absence of selected in-hospital therapies and procedures.