Table 5.
Associations of patient and admission characteristics with treatment delay in the multivariable analysis
| Variable | % increase in treatment delay (95 % CI) | Minimal increase in treatment delay in minutes (95 % CI)a | p-value | ||
|---|---|---|---|---|---|
| Intercept | N/A | 59.8 | (51.5;69.4) | N/A | |
| Prior myocardial infarction | 3.0 % | (−7.6;14.9) | 1.8 | (−4.5;8.9) | 0.59 |
| Prior use of anticoagulants (≤7 days) | 6.7 % | (−2.3;16.5) | 4.0 | (−1.4;9.9) | 0.15 |
| First ECG at the general practitioner | 40.0 % | (16.5;68.2) | 23.9 | (9.9;40.8) | <0.001 |
| First ECG in the hospital | 15.9 % | (4.1;28.9) | 9.5 | (2.5;17.3) | 0.007 |
| Interhospital transfer for PCI | 24.4 % | (12.7;37.4) | 14.6 | (7.6;22.4) | <0.001 |
| Acute heart failure on admission | 29.5 % | (13.2;48.0) | 17.6 | (7.9;28.7) | <0.001 |
| Creatinine level on admission (per mmol/L) | 0.1 % | (−0.04;0.2) | 0.06 | (−0.02;0.14) | 0.16 |
| Stenosis in left anterior descending | 4.1 % | (−2.2;10.9) | 2.5 | (−1.3;6.5) | 0.21 |
| Stenosis in circumflex artery | 7.3 % | (0.6;14.4) | 4.3 | (0.4;8.6) | 0.03 |
Significant results are highlighted in bold
N/A not applicable, CI confidence interval, PCI percutaneous coronary intervention, ECG electrocardiogram
aAs a result of the generalized linear model with a gamma distributed outcome and a log link, combining the effects of independent variables should be performed with caution due to multiplicative effects (and not additive) effects