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Table 3 Subgroup analyses for 1-month outcomes in subsequently shocked cohort a

From: Prognostic implications of conversion from nonshockable to shockable rhythms in out-of-hospital cardiac arrest

Subsequently shocked cohort characteristics (N=21,944) 1-month survival 1-month CPC category 1 or 2
n Rate (%) Crude OR (95% CI) Adjusted ORb(95% CI) n Rate (%) Crude OR (95% CI) Adjusted ORb(95% CI)
Initial cardiac rhythm         
Asystole, n =13,936, 63.5% 499 3.58 Reference Reference 143 1.03 Reference Reference
PEA, n =8,008, 36.5% 556 6.94 2.01 (1.77 to 2.28) 1.61 (1.41 to 1.83) 250 3.12 3.11 (2.53 to 3.83) 2.24 (1.80 to 2.79)
Epinephrine administration         
No, n =19,061, 86.9% 914 4.80 Reference Reference 359 1.88 Reference Reference
Yes, n =2,883, 13.1% 141 4.89 1.02 (0.85 to 1.22) 0.84 (0.68 to 1.01) 34 1.18 0.62 (0.43 to 0.87) 0.43 (0.29 to 0.61)
  1. aCI, Confidence interval; CPC, Cerebral Performance Categories scale; OR, Odds ratio; PEA, Pulseless electrical activity. bAdjustment for potential confounders included ten variables: years, age, sex, witnessed arrest, witnessed arrest by emergency medical services personnel, bystander cardiopulmonary resuscitation, presumed cardiac etiology, initial cardiac rhythm, call-to-response time and epinephrine administration.