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Table 1 Patient characteristics, in-hospital information, and outcomes

From: Comparing outcomes of out-of-hospital cardiac arrest patients with initial shockable rhythm in Singapore and Osaka using population-based databases

Ā 

Osaka 2010ā€“2018 (Derivation cohort)

SG-PAROS 2010ā€“2019

Characteristic

Overall nā€‰=ā€‰3088

Prehospital ROSC, Yes nā€‰=ā€‰1125

Prehospital ROSC, No nā€‰=ā€‰1963

Overall nā€‰=ā€‰2905

Prehospital ROSC, Yes nā€‰=ā€‰773

Prehospital ROSC, No nā€‰=ā€‰2132

Male

2,576 (83%)

932 (83%)

1,644 (84%)

2,515 (87%)

668 (86%)

1,847 (87%)

Age (years)

62 (51, 68)

62 (51, 68)

62 (51, 68)

58 (50, 65)

57 (49, 64)

58 (50, 65)

Witness

2,453 (79%)

979 (87%)

1,474 (75%)

2,226 (77%)

618 (80%)

1,608 (75%)

Bystander CPR

1,491 (48%)

569 (51%)

922 (47%)

1,797 (62%)

528 (68%)

1,269 (60%)

Bystander AED

157 (5.1%)

68 (6.0%)

89 (4.5%)

369 (13%)

182 (24%)

187 (8.8%)

Prehospital Airway

None

1,583 (51%)

732 (65%)

851 (43%)

390 (13%)

276 (36%)

114 (5.3%)

SGA

858 (28%)

229 (20%)

629 (32%)

2,498 (86%)

489 (63%)

2,009 (94%)

Intubation

647 (21%)

164 (15%)

483 (25%)

17 (0.6%)

8 (1.0%)

9 (0.4%)

Prehospital Drug

770 (25%)

215 (19%)

555 (28%)

2,072 (71%)

483 (62%)

1,589 (75%)

Time to ED arrival (min)

29 (24, 36)

29 (24, 36)

29 (24, 36)

36 (31, 41)

36 (31, 42)

35 (31, 41)

In-hospital information

Admission

NA

NA

NA

1,118 (38%)

683 (88%)

435 (20%)

ECMO

NA

NA

NA

18 (0.6%)

7 (0.9%)

11 (0.5%)

PCI

NA

NA

NA

575 (20%)

379 (49%)

196 (9.2%)

TTM

NA

NA

NA

453 (16%)

282 (36%)

171 (8.0%)

One-month outcomes

Good Neurological Outcome

987 (32%)

791 (70%)

196 (10.0%)

500 (17%)

440 (57%)

60 (2.8%)

Survival

1,294 (42%)

932 (83%)

362 (18%)

639 (22%)

524 (68%)

115 (5.4%)

  1. Continuous variables are median and interquartile range, and categorical variables are number and percentage (%). CPR Cardiopulmonary resuscitation, AED Automated external defibrillator, SGA Supraglottic airway, Prehospital drug Prehospital adrenaline administration, ROSC Return of spontaneous circulation, ED Emergency department, Shockable Ventricular fibrillation and pulseless ventricular tachycardia, Nonshockable Pulseless electrical activity and asystole, ECMO Extracorporeal membrane oxygenation, PCI Percutaneous coronary intervention, TTM Targeted temperature management. NA Not applicable. In-hospital information in Osaka data is not available. The characteristics of the validation cohort are described in the Additional file 1