Table II.
Outcomes for all Risk Groups Combined
| Variable | Full cohort, No. (%) | P valuea | Matched cohort, No. (%) | RR of pre-op β-B (95% CI) | P valueb | ||
|---|---|---|---|---|---|---|---|
|
|
|
||||||
| No β-B (n = 4249) | Pre-op β-B (n = 1733) | No β-B (n = 1459) | Pre-op β-B (n = 1459) | ||||
| POMI | 88 (2.1) | 49 (2.8) | .09 | 26 (1.8) | 43 (2.9) | 1.65 (1.02–2.68) | .05 |
| Dysrhythmia | 199 (4.7) | 112 (6.5) | .006 | 75 (5.1) | 92 (6.3) | 1.23 (0.91–1.65) | .21 |
| CHF | 73 (1.7) | 37 (2.1) | .33 | 25 (1.7) | 35 (2.4) | 1.4 (0.84–2.33) | .24 |
| Any MACE | 295 (6.9) | 162 (9.3) | .002 | 109 (7.5) | 138 (9.5) | 1.27 (0.99–1.61) | .06 |
| 30-day death | 50 (1.2) | 30 (1.7) | .12 | 19 (1.3) | 27 (1.9) | 1.42 (0.79–2.54) | .29 |
β-B, β-blocker; CHF, congestive heart failure; CI, confidence interval; MACE, major adverse cardiac event; POMI, postoperative myocardial infarction; RR, relative risk.
a
The P value is the result of the χ2 test.
b
The P value is result of the McNemar test for paired data.