Table 1.
Univariate associations between clinical features and troponin positivity.
| Univariate associations | |||
|---|---|---|---|
| Variable | Relative risk (95% CI) | Variable | Relative risk (95% CI) |
| Demographics | ECG findings | ||
| Age >65 | 4.3 (1.8–10.0) | Heart rate >80 | 4.1 (1.9–8.7) |
| Male sex | 1.0 (0.5–2.0) | Abnormal ECG | 3.1 (1.5–6.4) |
| AF | 3.6 (1.8–7.3) | ||
| Site of pain | Risk factors | ||
| Retrosternal | 1.0 (0.5–2.2) | Diabetes | 3.5 (1.8–6.9) |
| Epigastric | 1.0 (0.2–6.2) | Smoking | 2.0 (1.0–3.9) |
| Upper chest | 1.6 (0.6–4.1) | Hypertension | 1.6 (0.8–3.3) |
| Left chest | 0.9 (0.3–2.3) | Hypercholesterolaemia | 1.0 (0.4–2.6) |
| Right chest | 2.1 (0.6–6.9) | Family history | 1.0 (0.4–2.6) |
| Across chest | 3.2 (1.1–9.1) | ||
| Jaw/teeth | 1.4 (0.6–3.1) | Previous MI | 3.2 (1.7–6.3) |
| Posterior | 1.2 (0.4–2.9) | Known CAD | 2.8 (1.4–5.6) |
| Either arm | 2.3 (1.2–4.7) | Previous CVA | 1.1 (0.4–3.2) |
| Associated features | Character | ||
| Dyspnoea | 1.8 (0.9–3.8) | Pleuritic | 0.6 (0.1–3.9) |
| Sweating | 1.8 (0.9–3.8) | Sharp | 0.8 (0.3–2.0) |
| N&V | 2.0 (1.0–3.9) | Ache | 1.8 (0.6–5.1) |
| Palpitations | 1.2 (0.4–2.9) | Burning | 0.9 (0.1–5.5) |
| Anxiety | 1.5 (0.3–8.7) | Tight/crushing | 1.2 (0.6–2.5) |