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. 2020 Sep 1;24:541. doi: 10.1186/s13054-020-03259-w

Table 2.

Baseline characteristics of the hospitals in the multiply imputed dataset

Variables OCCPR (n = 1032) CCCPR (n = 1650) ASMD
ACS trauma center level, n (%)
 I 807 (78.2) 1248 (75.6) 0.06
 II 225 (21.8) 402 (24.4) 0.06
Teaching status, n (%)
 University 719 (69.7) 1097 (66.5) 0.07
 Community 226 (21.9) 470 (28.5) 0.15
 Non-teaching 87 (8.4) 83 (5.0) 0.14
Number of trauma surgeons, > 8, n (%) 400 (38.8) 445 (27.0) 0.25

Abbreviations: OCCPR open-chest cardiopulmonary resuscitation, OCCPR closed-chest cardiopulmonary resuscitation, ASMD absolute standardized mean difference, ACS American College of Surgeons