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Table 2 Characteristics of first time myocardial infarction patients according to total pre-hospital delay (n = 265)

From: Pre-hospital delay in patients with first time myocardial infarction: an observational study in a northern Swedish population

Characteristic <2 h ≥2 h P-value
n = 52 (19.6 %) n = 213 (80.4 %)
Mean age, years (SD) 67.5 (11.3) 68.2 (11.7) 0.668
Female sex 19/52 (36.5 %) 70/213 (32.9 %) 0.615
Married or cohabiting 23/32 (71.9 %) 106/172 (61.6 %) 0.270
Distance to hospital in km, median (IQR) 7.0 (27.5) 49.8 (87.4) <0.001
University or college degree 7/51 (13.7 %) 31/213 (14.6 %) 0.880
Manual worker 33/51 (66.0 %) 132/212 (61.9 %) 0.746
Medical history
 Previous revascularisation 2/52 (3.8 %) 7/213 (3.3 %) 0.691
 Previous stroke or TIA 3/52 (5.8 %) 10/213 (4.7 %) 0.742
 Angina pectoris, current diagnosis 2/52 (3.8 %) 20/213 (9.4 %) 0.267
 Hypertension, current diagnosis 25/52 48.1 %) 104/213 (48.8 %) 0.923
 Diabetes mellitus, medication for 5/52 (9.6 %) 46/213 (21.6 %) 0.049
 Dyslipidaemia, medication for 6/52 (11.5 %) 44/213 (20.7 %) 0.132
Previous chest pain symptoms
 Ever have chest pain or discomfort in the chest 21/52 (40.4 %) 63/203 (31.0 %) 0.201
 Chest pain walking at an ordinary pace on the level 3/51 (5.9 %) 23/198 (11.6 %) 0.232
 Chest pain walking uphill or in a hurry 14/51 (27.5 %) 68/202 (33.7 %) 0.397
On the day of admission to hospital
 Myocardial infarction suspected by patient 23/52 (44.2 %) 71/210 (33.8 %) 0.161
 “I decided by myself to seek medical care” 23/49 (46.9 %) 99/209 (47.47.4 %) 0.957
 “I took advice from a next of kin/friend” 9/49 (18.4 %) 50/209 (23.9 %) 0.405
 “A next of kin/friend contacted medical care” 17/49 (34.7 %) 60/209 (28.7 %) 0.410
 Expectations of medical care, mean (SD)a 80.2 (15.0) 76.2 (21.4) 0.208
First medical contact before admission to hospital
 Personal visit to a GP before referral 2/52 (3.8 %) 56/208 (26.9 %) <0.001
 Referred by call to a primary care centre/Swedish Healthcare Direct 10/52 (19.2 %) 68/208 (32.7 %) 0.058
 Called the Emergency Medical Services 27/52 (51.9 %) 70/208 (33.7 %) 0.015
 Self-referred to hospital 13/52 (25.0 %) 14/208 (6.7 %) <0.001
Ambulance transport to hospital 36/52 (69.2 %) 167/213 (78.4 %) 0.161
Symptoms reported by patient at triage
 Predominantly chest pain 48/52 (92.3 %) 170/211 (80.6 %) 0.044
 Predominantly other pain 3/52 (5.8 %) 27/211 (12.8 %) 0.153
 Symptoms other than pain predominated 1/52 (1.9 %) 14/211 (6.6 %) 0.189
 Symptom onset related to physical strain 10/52 (19.2 %) 37/210 (17.6 %) 0.786
 Recurrent angina within 2 weeks before admission 9/52 (17.3 %) 69/213 (32.4 %) 0.032
 Pain intensity, mean (SD)b 6.7 (2.7) 5.5 (3.1) 0.099
  1. TIA transitory ischaemic attackaVisual analogue scale from 0 to 100 where 0 is lowest and 100 is highest possible expectations; five patients with missing valuesbVisual analogue scale from 0 to 10 where 0 is no pain and 10 is worst possible pain; assessed at triage in 115/265 patients