Research Article
Correlates of Delayed Initial Contact to Emergency Services among Patients with Suspected ST-Elevation Myocardial Infarction
Table 3
Medical characteristics of patients (n = 267–287).
| | Demographic characteristics | Mean (SD) | Freq (valid %) |
| | BMI category | | Underweight (≤18.5 kg/m2) | | 5 (1.7) | | Normal (18.6–24.9 kg/m2) | | 49 (17.1) | | Overweight (25–29.9 kg/m2) | | 121 (42.2) | | Obese (30–39.9 kg/m2) | | 97 (33.8) | | Morbidly obese (≥40 kg/m2) | | 15 (5.2) | | Arrival mode | | Private vehicle | | 71 (24.7) | | EMS | | 162 (56.4) | | Transfer | | 54 (18.8) | | Self-medicated prior to arrival (over-the-counter/prescribed analgesics or illicit drugs) | | 13 (4.5) | | Prior out-patient cardiologist | | 112 (39.0) | | Diabetes | | 99 (34.5) | | Stroke history | | 20 (7.0) | | Disability | | 27 (9.4) | | Prior cardiac stent placement | | 43 (15.0) | | Chest pain >24 hours prior to arrival | | 56 (19.5) | | Known cardiac artery disease | | 113 (39.4) | | Hemodynamic stability upon arrival | | Stable | | 226 (78.7) | | Unstable | | 61 (21.3) | | LDL level | | ≤70 mg/dL | | 58 (21.7) | | >71 mg/dL | | 209 (78.3) | | Highest troponin | | ≤0.40 ng/ml | | 52 (18.6) | | >0.41 ng/ml | | 228 (81.4) |
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BMI = body mass index; EMS = emergency medical services; LDL = low-density lipoprotein.
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