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Table 1 Characteristics of patients who come to the emergency department with acute chest pain, due to acute coronary syndrome (ACS; n = 130) or other causes (n = 504).

From: A simple statistical model for prediction of acute coronary syndrome in chest pain patients in the emergency department

  ACS n (%) Other causes n (%) OR 95% CI
Age     
   ≥ 80 years 35 (26.9) 86 (17.1) 10 2.9 – 34
   70 – 79 years 39 (30.0) 103 (20.4) 9.3 2.8 – 31
   60 – 69 years 26 (20.0) 98 (19.4) 6.5 1.9 – 22
   50 – 59 years 22 (16.9) 89 (17.7) 6.1 1.8 – 21
   40 – 49 years 5 (3.8) 54 (10.7) 2.3 0.52 – 10
   < 40 years 3 (2.3) 74 (14.7) 1.0 -
Male 83 (63.8) 279 (55.4) 1.4 0.96 – 2.1
Smoking status     
   Current 29 (22.3) 98 (19.4) 1.3 0.78 – 2.3
   Former 50 (38.5) 155 (30.8) 1.5 0.91 – 2.3
   Unknown 12 (9.2) 74 (14.7) 0.74 0.36 – 1.5
   Non-smoker 39 (30.0) 177 (35.1) 1.0 -
Hypertension     
   Yes 47 (36.2) 114 (22.6) 2.0 1.3 – 3.0
   Unknown 8 (6.2) 27 (5.4) 1.4 0.63 – 3.3
   No 75 (57.7) 363 (72.0) 1.0 -
Diabetes 19 (14.6) 57 (11.3) 1.3 0.77 – 2.4
Angina pectorisa     
   Yes, ≤ 1 month 4 (3.1) 5 (1.0) 3.8 1.0 – 15
   Yes, > 1 month 56 (43.8) 174 (34.5) 1.5 1.0 – 2.3
   No 68 (53.1) 325 (64.5) 1.0 -
Congestive heart failure 20 (15.4) 79 (15.7) 0.98 0.57 – 1.7
Previous myocardial infarction     
   Yes, ≤ 6 months 13 (10.0) 19 (3.8) 3.2 1.5 – 6.8
   Yes, > 6 months 37 (28.5) 107 (21.2) 1.6 1.0 – 2.6
   No 80 (61.5) 378 (75.0) 1.0 -
Previous PCI 4 (3.1) 21 (4.2) 0.73 0.25 – 2.2
Previous CABG 10 (7.7) 55 (10.9) 0.68 0.34 – 1.4
Treated with cardiac drugsb 85 (65.4) 282 (56.0) 1.5 0.99 – 2.2
Chest discomfort at presentation 85 (65.4) 238 (47.2) 2.1 1.4 – 3.2
Symptom durationc     
   0 – 6 h 100 (76.9) 261 (52.0) 5.4 2.7 – 11
   7 – 12 h 16 (12.3) 59 (11.8) 3.8 1.6 – 8.8
   13 – 24 h 4 (3.1) 42 (8.4) 1.3 0.40 – 4.5
   > 24 h 10 (7.7) 140 (27.9) 1.0 -
Tachypnea 13 (10.0) 27 (5.4) 2.0 0.98 – 3.9
Lung rales 12 (9.2) 23 (4.6) 2.1 1.0 – 4.4
Systolic bp < 100 mmHgd 4 (3.1) 4 (0.8) 3.9 0.97 – 16
Diastolic bp < 70 mmHge 16 (12.9) 36 (7.3) 2.0 1.0 – 3.7
Heart ratef     
   > 120 bpm 4 (3.1) 12 (2.4) 1.3 0.41 – 4.1
   < 50 bpm 3 (2.3) 10 (2.0) 1.2 0.32 – 4.3
   50 – 120 bpm 123 (94.6) 480 (95.6) 1.0 -
  1. a Data on angina pectoris were missing for two patients with ACS.
  2. b ACE-inhibitors, ASA, Calcium antagonists, Betablockers, Long-acting Nitrates or Diuretics.
  3. c Data on symptom duration were missing for two patients without ACS.
  4. d Data on systolic blood pressure were missing for 8 patients (one with and 7 without ACS).
  5. e Data on diastolic blood pressure were missing for 15 patients (6 with and 9 without ACS).
  6. f Data on heart rate were missing for 2 patients without ACS.