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Table 2 Patient characteristics and their trends for in-hospital cardiac arrest

From: Incidence and outcomes of in-hospital cardiac arrest in Japan 2011–2017: a nationwide inpatient database study

  Total Fiscal year P for trend
2011 2012 2013 2014 2015 2016 2017
Demographic characteristics
 Age (years), mean 73.2 73.3 72.7 72.4 73.1 73.2 73.6 73.9 < 0.001
  Infants (aged < 1 year), % 1.1 1.0 1.2 1.4 1.2 1.1 1.1 0.9 0.065
  Children (aged 1–18 years), % 1.0 0.8 1.0 1.0 1.0 1.0 1.0 0.9 0.734
  Adults
   Aged 19–64 years, % 19.1 20.1 20.4 20.1 18.9 18.5 18.0 17.8 < 0.001
   Aged 65–74 years, % 21.2 20.1 20.8 21.4 21.5 22.1 21.2 21.4 < 0.001
   Aged 75–84 years, % 32.8 34.2 33.6 33.0 32.5 32.4 32.2 31.7 < 0.001
   Aged > 84 years, % 24.8 23.8 23.0 23.0 24.9 24.7 26.5 27.2 < 0.001
 Male sex, % 60.5 59.9 60.6 61.0 60.5 60.6 60.4 60.4 0.571
 Illness category, %
  Medical—cardiac 29.4 27.0 27.6 28.6 29.2 29.8 31.0 32.4 < 0.001
  Medical—noncardiac 55.0 58.7 56.4 55.3 55.1 54.2 53.3 51.8 < 0.001
  Surgical—cardiac 2.8 2.4 2.9 2.9 2.8 3.1 2.8 3.1 < 0.001
  Surgical—noncardiac 6.3 6.3 6.7 6.6 6.2 6.2 5.9 6.0 < 0.001
  Obstetric 0.1 0.0 0.1 0.1 0.1 0.1 0.1 0.0 0.974
  Trauma 6.5 5.7 6.4 6.5 6.7 6.6 6.9 6.7 < 0.001
Cardiac arrest process
 Arrest on weekend, % 27.4 27.2 27.6 27.3 27.6 27.2 27.5 27.4 0.802
 Automated external defibrillator, % 2.3 2.1 2.1 2.0 2.3 2.4 2.5 2.5 < 0.001
 Defibrillation, % 14.4 14.8 14.7 14.6 14.5 14.3 13.9 14.1 < 0.001
 Extracorporeal cardiopulmonary resuscitation, % 3.4 2.5 2.9 3.3 3.4 3.8 3.7 4.1 < 0.001
 Adrenaline, % 69.7 69.6 68.7 69.5 69.4 69.8 70.3 70.4 < 0.001
 Dose of adrenaline (mg), mean 4.8 4.8 4.7 4.9 4.9 4.9 4.8 4.8 < 0.001
 Endotracheal intubation, % 51.9 52.6 51.8 51.5 51.9 51.7 51.9 52.2 0.597
Post-resuscitation process
 Intensive care unit admission, % 24.9 20.9 22.7 23.8 24.4 25.0 24.1 24.4 < 0.001
 High dependency care unit admission, % 12.6 12.2 14.2 15.8 16.2 16.9 19.7 20.7 < 0.001
 Targeted temperature management, % 1.3 0.9 1.2 1.5 1.4 1.5 1.4 1.4 < 0.001
 Coronary angiography, % 2.0 1.4 1.7 2.0 1.9 2.2 2.3 2.4 < 0.001
 Percutaneous coronary intervention, % 4.1 3.5 3.7 4.1 4.2 4.5 4.3 4.6 < 0.001
  1. Each fiscal year started on 01 April and ended on 31 March