Cox proportional hazards model for all patients and for subgroups with and without index ACS
| HRs for all individuals (n=2448) | HRs for individuals with index ACS (n=411) | HRs for individuals without index ACS (n=2037) | |
|---|---|---|---|
| Variable | HR (95% CI) | HR (95% CI) | HR (95% CI) |
| Delay time (hours) | |||
| <2 | 1.00 | 1.00 | 1.00 |
| 2–6 | 1.22 (0.80 to 1.85) | 1.07 (0.54 to 2.13) | 1.30 (0.77 to 2.21) |
| >6 | 1.57 (1.07 to 2.31) | 1.38 (0.75 to 2.54) | 1.72 (1.05 to 2.82) |
| Age (years) | |||
| <40 | 1.00 | 1.00 | 1.00 |
| 40–49 | 1.04 (0.32 to 3.39) | – | 0.70 (0.16 to 3.14) |
| 50–59 | 2.18 (0.76 to 6.24) | 1.14 (0.42 to 3.11) | 2.04 (0.59 to 7.00) |
| 60–69 | 2.62 (0.92 to 7.48) | 0.51 (0.18 to 1.49) | 3.72 (1.11 to 12.50) |
| 70–79 | 4.37 (1.53 to 12.45) | 1.32 (0.52 to 3.34) | 5.43 (1.60 to 18.45) |
| ≥80 | 6.36 (2.21 to 18.27) | 2.87 (1.16 to 7.14) | 5.49 (1.56 to 19.30) |
| Caucasian | 0.57 (0.39 to 0.83) | 0.59 (0.32 to 1.08) | 0.57 (0.35 to 0.93) |
| Prior angina | 2.98 (2.11 to 4.21) | 1.99 (1.16 to 3.23) | 3.91 (2.46 to 6.22) |
| Prior CABG | 1.03 (0.69 to 1.53) | 1.14 (0.60 to 2.15) | 1.00 (0.60 to 1.67) |
| Index ACS | 2.29 (1.69 to 3.10) | ||
For the model examining endpoint rate after index presentation for individuals with ACS, the age categories <40 and 40–49 were combined due to few individuals being in these lower age categories.
ACS, acute coronary syndrome; CABG, coronary artery bypass graft.