Baert et al, 2020 [18]
|
France
|
Registry-based study
|
Adult and pediatric cases of presumed medical etiology (EMS-treated NR; Received resuscitation NR)
|
(i) March 1 – April 31, 2019
(ii) March 1 – April 31, 2020
|
(i) 1620
(ii) 1005
|
(i) 69.0 (17.0)
(ii) 68.0 (17.0)
|
(i) 1071/1620 (66.1%)
(ii) 676/1005 (67.3%)
|
Baldi et al, 2020 [8]
|
Lombardy, Italy
|
Registry-based study
|
Adult and pediatric cases regardless of etiology (EMS-treated NR; Received resuscitation NR)
|
(i) February 21 – April 20, 2019
(ii) February 21 – April 20, 2020
|
(i) 321
(ii) 490
|
(i) 77.3 (14.2)
(ii) 77.0 (14.1)
|
(i) 188/321 (58.6%)
(ii) 321/490 (65.5%)
|
Ball et al, 2020 [19]
|
Victoria, Australia
|
Registry-based study
|
Adult cases regardless of etiology; EMS-treated and received resuscitation
|
(i) March 16 – May 12, 2017–2019
(ii) March 16 – May 12, 2020
|
(i) 1218
(ii) 380
|
(i) 65.7 (19.3)
(ii) 67.7 (19.4)
|
(i) 845/1218 (69.4%)
(ii) 250/380 (65.8%)
|
Cho et al, 2020 [12]
|
Daegu, South Korea
|
Registry-based study
|
Adult cases of presumed medical etiology; EMS-treated and received resuscitation
|
(i) February 17 – March 31, 2018
(ii) February 17 – March 31, 2020
|
(i) 158
(ii) 171
|
(i) 72.8 (15.3)
(ii) 72.0 (13.5)
|
(i) 103/158 (65.2%)
(ii) 108/171 (63.2%)
|
Elmer et al, 2020 [28]
|
Pennsylvania, USA
|
Registry-based study
|
Adult cases regardless of etiology; EMS-treated (Received resuscitation NR)
|
(i) January – February 2016–2020
(ii) March 1 – May 25, 2020
|
(i) 12252
(ii) 683
|
(i) 63.0 (19.0)
(ii) 64.0 (19.0)
|
(i) 7700/12252 (62.8%)
(ii) 430/683 (63.0%)
|
Lai et al, 2020 [9]
|
New York City, USA
|
Non-registry-based study
|
Adult cases regardless of etiology; EMS-treated and received resuscitation
|
(i) March 1 – April 25, 2019
(ii) March 1 – April 25, 2020
|
(i) 1336
(ii) 3989
|
(i) 68.0 (19.0)
(ii) 72.0 (18.0)
|
(i) 752/1336 (56.3%)
(ii) 2183/3989 (54.7%)
|
Marijon et al, 2020 [10]
|
Paris, France
|
Registry-based study
|
Adult cases of non-traumatic etiology; EMS-treated (Received resuscitation NR)
|
(i) Weeks 12–17, 2012–2019
(ii) March 16 – April 26, 2020
|
(i) 3052
(ii) 521
|
(i) 68.5 (18.0)
(ii) 69.7 (17.0)
|
(i) 1826/3052 (59.8%)
(ii) 334/521 (64.1%)
|
Ortiz et al, 2020 [20]
|
Spain
|
Registry-based study
|
Adult and pediatric cases regardless of etiology; EMS-treated (Received resuscitation NR)
|
(i) April 1–30, 2017 and February 1 – March 31, 2018
(ii) February 1 – April 30, 2020
|
(i) 1723
(ii) 1446
|
(i) 65.6 (16.9)
(ii) 64.4 (16.5)
|
(i) 1210/1723 (70.2%)
(ii) 1028/1446 (71.1%)
|
Paoli et al, 2020 [29]
|
Province of Padua, Italy
|
Non-registry-based study
|
Adult and pediatric cases regardless of etiology; EMS-treated (Received resuscitation NR)
|
(i) March 1 – April 30, 2019
(ii) March 1 – April 30, 2020
|
(i) 206
(ii) 200
|
(i) 77.0 (14.0)
(ii) 79.0 (17.0)
|
(i) NR
(ii) NR
|
Sayre et al, 2020 [21]
|
Seattle and King County, USA
|
Registry-based study
|
Adult and pediatric cases regardless of etiology; EMS-treated (Received resuscitation NR)
|
(i) January 1 – February 25, 2019
(ii) February 26 – April 15, 2020
|
(i) 530
(ii) 537
|
(i) NR
(ii) NR
|
(i) NR
(ii) NR
|
Semeraro et al, 2020 [30]
|
Bologna, Italy
|
Registry-based study
|
Adult cases regardless of etiology; EMS-treated and received resuscitation
|
(i) January 1 – June 30, 2019
(ii) January 1 – June 30, 2020
|
(i) 563
(ii) 624
|
(i) 82.7 (13.4)
(ii) 82.7 (13.4)
|
(i) 284/563 (50.4%)
(ii) 318/624 (51.0%)
|
Chan et al, 2021 [22]
|
27 States and multiple Counties, USA
|
Registry-based study
|
Adult cases of non-traumatic etiology; EMS-treated (Received resuscitation NR)
|
(i) March 16 – April 30, 2019
(ii) March 16 – April 30, 2020
|
(i) 9440
(ii) 9863
|
(i) 62.2 (19.2)
(ii) 62.6 (19.6)
|
(i) 5922/9440 (62.7%)
(ii) 6040/9863 (61.2%)
|
de Koning et al, 2021 [31]
|
Hollands-Midden, The Netherlands
|
Registry-based study
|
Adult cases regardless of etiology; EMS-treated (Received resuscitation NR)
|
(i) March 16 – April 27, 2019
(ii) March 16 – April 27, 2020
|
(i) 45
(ii) 56
|
(i) 70.0 (12.0)
(ii) 70.0 (14.0)
|
(i) 31/45 (68.9%)
(ii) 32/56 (57.1%)
|
Fothergill et al, 2021 [13]
|
London, UK
|
Registry-based study
|
Adult and pediatric cases regardless of etiology; EMS-treated (Received resuscitation NR)
|
(i) March 1 – April 30, 2019
(ii) March 1 – April 30, 2020
|
(i) 1724
(ii) 3122
|
(i) 68.0 (20.0)
(ii) 71.0 (19.0)
|
(i) 1069/1724 (62.0%)
(ii) 1839/3122 (58.9%)
|
Glober et al, 2021 [23]
|
Indiana (Marion County), USA
|
Registry-based study
|
Adult cases of non-traumatic etiology; EMS-treated (Received resuscitation NR)
|
(i) January 1 – June 30, 2019
(ii) January 1 – June 30, 2020
|
(i) 884
(ii) 1034
|
(i) 61.5 (18.1)
(ii) 59.7 (18.5)
|
(i) 544/884 (61.5%)
(ii) 622/1034 (60.2%)
|
Lim et al, 2021 [3]
|
Singapore
|
Registry-based study
|
Adult cases regardless of etiology; EMS-treated (Received resuscitation NR)
|
(i) January 1 – May 31, 2018–2019
(ii) January 1 – May 31, 2020
|
(i) 1280
(ii) 1400
|
(i) 71.3 (17.1)
(ii) 72.3 (17.8)
|
(i) 818/1280 (63.9%)
(ii) 882/1400 (63.0%)
|
Mathew et al, 2021 [24]
|
Detroit, USA
|
Registry-based study
|
Adult cases of non-traumatic etiology; EMS-treated and received resuscitation
|
(i) March 10 – April 30, 2019
(ii) March 10 – April 30, 2020
|
(i) 180
(ii) 291
|
(i) 58.5 (19.8)
(ii) 64.5 (18.1)
|
(i) 93/180 (51.7%)
(ii) 165/291 (56.7%)
|
Nickles et al, 2021 [25]
|
Detroit (Macomb, Oakland, and Wayne Counties), USA
|
Registry-based study
|
Adult and pediatric cases of non-traumatic etiology; EMS-treated (Received resuscitation NR)
|
(i) January 1 – May 31, 2019
(ii) January 1 – May 31, 2020
|
(i) 1162
(ii) 1854
|
(i) NR
(ii) NR
|
(i) 662/1162 (57.0%)
(ii) 1083/1854 (58.4%)
|
Sultanian et al, 2021 [26]
|
Sweden
|
Registry-based study
|
Adult and pediatric cases regardless of etiology; EMS-treated and received resuscitation
|
(i) January 1 – March 16, 2020
(ii) March 16 – July 20, 2020
|
(i) 930
(ii) 1016
|
(i) 70.8 (16.6)
(ii) 69.6 (17.8)
|
(i) 604/930 (64.9%)
(ii) 697/1016 (68.6%)
|
Uy-Evanado et al, 2021 [27]
|
Oregon (Multnomah County) and California (Ventura County), USA
|
Registry-based study
|
Adult and pediatric cases regardless of etiology; EMS-treated and received resuscitation
|
(i) March 1 – May 31, 2019
(ii) March 1 – May 31, 2020
|
(i) 231
(ii) 278
|
(i) 69.1 (17.4)
(ii) 64.9 (18.3)
|
(i) 137/231 (59.3%)
(ii) 174/278 (62.6%)
|