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Table 5 Characteristics and type of pain by availability of diagnosis

From: Predicting acute coronary syndrome in males and females with chest pain who call an emergency medical communication centre

  Diagnosis unknown (n = 478) Diagnosis established (n = 3727) P value
Female, No. (%) 212 (44.4) 1630 (43.7) 0.789
Age, mean (SD), y, No. (%) 48.1 (16.5) 55.9 (17.0) <0.001
 <40 147 (30.8) 764 (20.5) <0.001
 40-50 133 (27.8) 804 (21.6)  
 50-60 95 (19.9) 790 (21.2)  
 ≥60 103 (21.5) 1369 (36.7)  
Coexisting conditions, No. (%)
 Hypertension 84 (17.6) 1181 (31.7) <0.001
 Personal coronary artery disease 71 (14.9) 857 (23.0) <0.001
 Family coronary artery disease 82 (17.2) 603 (16.2) 0.587
 Tobacco use 220 (46.0) 1244 (33.4) <0.001
 Diabetes 20 (4.2) 462 (12.4) <0.001
 Dyslipidaemia 77 (16.1) 838 (22.5) 0.001
Medication therapy, No. (%)
 Aspirin 55 (11.5) 624 (16.7) 0.003
 Clopidogrel 31 (6.5) 410 (11.0) 0.002
 Thyroid hormone 20 (4.2) 152 (4.1) 0.912
 Statin 40 (8.4) 589 (15.8) <0.001
Severity of pain, median (IQR) 5 [3–6] 5 [3–7] 0.032
Type of pain, No. (%)
 Severe pain (NRS ≥6) 177 (37.1) 1616 (43.4) 0.009
 Permanent 112 (23.4) 947 (25.4) 0.348
 Pain onset:    0.057
  Crescendo 113 (23.6) 782 (21.0)  
  Abruptly 179 (37.4) 1608 (43.1)  
  Unclassified 186 (38.9) 1337 (35.9)  
Circumstance of call, No. (%)    0.733
 At rest 382 (79.9) 3026 (81.2)  
 Sport or stress related 52 (10.9) 395 (10.6)  
 Unclassified 44 (9.2) 306 (8.2)  
Pain typography, No. (%)
 Typical chest paina 231 (48.3) 2121 (56.9) <0.001
 Retrosternal 170 (35.6) 1721 (46.2)  
 Post-myocardial infarction angina 14/71 (19.7) 241/857 (28.1) 0.127
 Peak type 143 (29.9) 701 (18.8) <0.001
 Burning 59 (12.3) 478 (12.8) 0.766
 Pinching 19 (4.0) 204 (5.5) 0.169
 Increasing at position change 119 (24.9) 726 (19.5) 0.005
 Breathing non-related 311 (65.1) 2738 73.5) <0.001
 Radiating 198 (41.4) 1637 (43.9) 0.299
 Additional symptoms 302 (63.3) 2521 (67.7) 0.056
  1. NRS Numeric rating scale
  2. aTypical chest pain is characterized by a retrosternal sensation of pressure or heaviness (‘angina’), which may be intermittent (usually lasting several minutes) or persistent