Table 1

Background characteristics and clinical variables

All
N=445
EMS
n=227
SHD
n=93
PHC
n=64
ER
n=61
Sociodemographics
 Age, years*66±1166±1164±1167±1166±10
 Gender, men336 (76)177 (78)62 (67)50 (78)47 (77)
 Education, ≤9 years171 (39)91 (40)24 (26)26 (41)30 (49)
 Current smoker104 (24)58 (26)20 (22)16 (25)10 (16)
 Falling ill at home341 (77)178 (78)72 (77)45 (70)46 (75)
 Being alone at symptom onset119 (27)60 (26)18 (19)24 (38)17 (28)
 Falling ill during a weekend129 (29)67 (30)34 (37)8 (12)20 (33)
 Falling ill during evening/night at 18:00–6:00156 (36)86 (39)33 (36)14 (22)23 (38)
 Distance to hospital, ≥50 km74 (17)42 (19)16 (17)8 (12)8 (13)
Comorbidities
 Myocardial infarction55 (13)42 (18)5 (5)0 (0)9 (15)
 Hypertension208 (47)103 (46)47 (51)33 (52)25 (41)
 Atrial fibrillation22 (5)18 (8)2 (2)1 (2)1 (2)
 Heart failure12 (3)11 (5)0 (0)0 (0)1 (2)
 Diabetes68 (15)29 (13)20 (22)10 (16)9 (15)
 Stroke8 (2)4 (2)2 (2)2 (3)0 (0)
Symptoms
 Believing symptoms originated from the heart295 (66)167 (74)51 (55)38 (59)39 (64)
 Chest pain390 (88)207 (91)77 (83)54 (84)52 (85)
 Cardinal symptoms†436 (98)225 (99)89 (96)62 (97)60 (98)
 Pain intensity, numeric rating scale*6.8±2.17.2±2.06.2±2.36.6±1.86.7±1.9
 Symptom burden*5.3±2.55.6±2.65.3±2.44.9±2.34.7±2.1
  • Data are presented as numbers (percentages) if not otherwise indicated.

  • *Data are presented as mean±SD.

  • †Chest pain and/or radiating pain in the arms and/or cold sweat.

  • EMS, Emergency Medical Services; ER, emergency room; PHC, Primary Healthcare Centre; SHD, Swedish Healthcare Direct.