TABLE 2.
Cumulative 2-year cardiovascular death hazard ratios in comparison with quartile 2 of systolic BP in the total cohort (adjusted)a
| Univariate regression | Multivariate regression | |||||
| Variable | HR | 95% CI | P value | HR | 95%CI | P value |
| Quartile 1 (SBP <120 mmHg) | 2.22 | 1.68–2.94 | <0.001 | 1.58 | 1.12–2.21 | 0.009 |
| Quartile 3 (SBP 130–143 mmHg) | 1.08 | 0.81–1.44 | 0.625 | 1.33 | 0.95–1.86 | 0.094 |
| Quartile 4 (SBP at least 144 mmHg) | 1.54 | 1.16–2.05 | 0.003 | 1.28 | 0.91–1.82 | 0.160 |
| Sexb | 0.91 | 0.76–1.09 | 0.293 | 0.68 | 0.55–0.85 | 0.001 |
| Age | 1.13 | 1.11–1.15 | <0.001 | 3.37 | 1.29–8.77 | 0.013 |
| Prior myocardial infraction | 1.60 | 1.26–2.04 | <0.001 | 1.54 | 1.17–2.03 | 0.002 |
| Diabetes mellitus | 1.25 | 1.05–1.50 | 0.015 | 1.08 | 0.84–1.37 | 0.560 |
| Diagnosis of AMIc | 4.50 | 3.73–5.42 | <0.001 | 2.62 | 2.02–3.39 | <0.001 |
| Killip classd | ||||||
| II | 1.75 | 1.37–2.23 | <0.001 | 1.82 | 1.38–2.40 | <0.001 |
| III | 4.64 | 3.49–6.16 | <0.001 | 3.41 | 2.43–4.80 | <0.001 |
| IV | 21.23 | 15.95–28.26 | <0.001 | 9.51 | 6.63–13.63 | <0.001 |
| DBP | 0.99 | 0.98–1.00 | 0.007 | 1.00 | 0.99–1.01 | 0.785 |
| Heart rate | 1.03 | 1.03–1.04 | <0.001 | 1.01 | 1.00–1.01 | 0.067 |
| BMIe | 0.90 | 0.88–0.92 | <0.001 | 0.94 | 0.92–0.97 | <0.001 |
| Hemoglobin | 0.97 | 0.96–0.97 | <0.001 | 0.99 | 0.99–1.00 | 0.003 |
| Glucose | 1.11 | 1.09–1.13 | <0.001 | 1.05 | 1.01–1.09 | 0.011 |
| Albumin | 0.84 | 0.83–0.86 | <0.001 | 0.97 | 0.94–0.99 | 0.016 |
| Lactate | 1.11 | 1.06–1.15 | <0.001 | 1.09 | 1.05–1.120 | <0.001 |
| eGFRf | 0.96 | 0.96–0.97 | <0.001 | 0.99 | 0.98–0.99 | <0.001 |
| hs-CRP | 1.05 | 1.04–1.06 | <0.001 | 1.01 | 1.00–1.02 | 0.072 |
AMI, acute myocardial infarction; CI, confidence interval; eGFR, estimated glomerular filtration rate; HR, hazard ratio; hsCRP, high-sensitivity C-reactive protein; SP, blood pressure.
Adjusted for age; sex; concomitant diseases; diagnosis of AMI; Killip class grade; cardiac shock at admission; DBP; heart rate; BMI; hemoglobin; glucose; albumin; lactate; eGFR; and hsCRP. Quartile 2 had a SBP of 120–129 mmHg. n = 5696 with data on all covariates.
Sex was set as 1 for men, 2 for women, in the statistical analysis.
Diagnosis of AMI was set as 0 for unstable angina, 1 for AMI.
Degree of heart failure present on admission categorized by Killip class; P values were for comparisons with group of Killip class I.
Calculated as weight in kilograms divided by height in meters squared.
Calculated with Chronic Kidney Disease Epidemiology (CKD-EPI) equation.