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. Author manuscript; available in PMC: 2015 Nov 1.
Published in final edited form as: Resuscitation. 2014 Jul 8;85(11):1599–1609. doi: 10.1016/j.resuscitation.2014.06.031

TABLE 3.

Time Variables Collected by Participating Utstein-Style Out-of-Hospital Cardiac Arrest Registries

Variable Coding SJA-WA Cardiac
Arrest Registry		 Victorian
Ambulance
Cardiac Arrest
Registry		 CAVAS Project Taipei OHCA
Registry		 Utstein Osaka
Project		 ROC Irish OHCAR ARREST Oslo and
Akershus Registry		 Helsinki Cardiac
Arrest Registry		 Swedish Register
of
Cardiopulmonary
Resuscitation		 VICAR German
Resuscitation
Registry		 Average
Missingness
(%)
Date of arrest DD/MM/YYYY Collected not collated Collected Collected Collected Collected Collected Collected Collected Collected not collated Collected Collected Collected Collected
Missing, % n/a 0 2.3 0 0 0 0 0 n/a 0 0 0 0 0.2
Date of discharge/death DD/MM/YYYY Collected not collated Collected Collected Collected Collected Collected Collected Collected Collected not collated Collected Collected Collected not collated Collected
Missing, % n/a 0.7 0.8 7.0 3.7 0.8 0.5 0.8 n/a 0.4 10.7 n/a 41.3 6.7
Time of witnessed/monitored arrest DD/MM/YYYY Not collected Collected not collated Not collected Not collected Collected if bystander or EMS witnessed Collected if EMS-witnessed arrest Collected Not collected Collected if bystander or EMS witnessed Use time when call received or time of first rhythm analysis as surrogate Collected if bystander or EMS witnessed Collected not collated Collected if bystander or EMS witnessed
Missing, % n/a n/a n/a n/a 0 18.6 17.5 n/a 8.0 7.3 n/a 43.0 15.7
Time when call received HH/MM/SS Collected Collected Collected Collected Collected Collected Collected Collected Collected Collected Collected Collected Collected
Missing, % 0 0 0 0 0 0.21 4.0 0.2 0.1 0.7 7.1 0.4 11.1 1.8
Time of first rhythm analysis/assessment of need for CPR HH/MM/SS Not collected Use time of EMS arrival at patient side as surrogate Not collected Collected for EMS only Collected for bystander or EMS Collected Collected Collected for bystander use of AED or EMS Not collected Collected Collected Collected for EMS only Not collected
Missing, % n/a n/a 1.0 0.7 19.2 19.2 7.0 n/a 0.2 30.0 4.0 n/a 10.2
Time of first CPR attempts HH/MM/SS Not collected Collected if EMS-witnessed arrest Not collected Collected for bystander or EMS Collected for bystander and EMS Collected for EMS only Collected for bystander or EMS Not collected Not collected Collected if EMS-witnessed arrest Collected for bystander or EMS Collected not collated Collected for bystander or EMS
Missing, % n/a 0.8 n/a 11.0 0.1 13.6 25.6 n/a n/a 0.2 7.0 n/a 58.4 14.6
Time of first defibrillation attempt if shockable rhythm HH/MM/SS Not collected Collected for EMS only Not collected Collected for EMS only Collected for bystander and EMS Collected for EMS only Collected for bystander or EMS Collected for bystander or EMS Not collected Collected for bystander or EMS Collected for bystander or EMS Not collected Collected for bystander or EMS
Missing, % n/a 2.8 n/a 14.2 0 10.7 38.1 2.5 n/a 4.8 11.1 n/a 42.1 14.0