Table 2.
Clinical outcomes between the Subsequently Shocked and Not Shocked groups
| Subsequently | Subsequently | |||
|---|---|---|---|---|
| Not Shockeda | Shockedb | Odds ratio | ||
| (n = 10,960) | (n = 521) | (95 % CI) | P value | |
| ROSC | 2891 (26.4) | 185 (35.5) | 1.54 (1.28–1.86) | <0.0001 |
| 24-hour survival | 700 (6.4) | 59 (11.3) | 1.87 (1.41–2.48) | <0.0001 |
| 1-month survival | 187 (1.7) | 25 (4.8) | 2.90 (1.89–4.45) | <0.0001 |
| 1-month good recoveryc | 52 (0.5) | 14 (2.7) | 5.79 (3.19–10.5) | <0.0001 |
Data presented as number (percentage). P values calculated using chi-square test
aPatients who had initially nonshockable rhythms and received no shock(s) during EMS resuscitation
bPatients who had initially nonshockable arrest rhythms and subsequently received shock(s) owing to conversion to shockable rhythms during EMS resuscitation
cSurvival with favorable neurological outcome defined as Cerebral Performance Category of 1 or 2 at 1 month after cardiac arrest
CI confidence interval, EMS emergency medical service, ROSC return of spontaneous circulation