The All-Japan Utstein Registry of the Fire and Disaster
Management Agency (FDMA) is a prospective, nationwide,
population-based registry system of all OHCA patients,
involving Utstein-style data collection [16]. This study was
a population-based cohort study using data from the AllJapan
Utstein Registry.
This study included all adults aged 18 years with OHCA
caused by respiratory disease and for whom resuscitation
was attempted by emergency medical service (EMS) personnel
with subsequent transport to medical institutions from
January 1, 2010 to December 31, 2010. Patients were excluded
from the analysis if data on the onset date, call receipt time,
hospital arrival time, airway management status, or the
usage status of a public access AED were missing or
unknown. Patients who were provided only AED or ventilation
by a bystander were also excluded.
This study was conducted in accordance with the
amended Declaration of Helsinki. The FDMA and the Institutional
Review Board of The University of Tokyo approved
the study with waiver of informed consent because of the
anonymous nature of the data