Table 1.
Baseline Characteristics and Clinical Factors at Resuscitation Between Patients With a Blood Sample and Included in the Analysis and Those Without a Blood Sample and Not Included in the Analysis
| Characteristic | Patients With Blood Sample (n=245) | Patients Without Blood Sample (n=303) | P Value |
|---|---|---|---|
| Age, y, median (IQR) | 63 (53 to 72) | 63 (56 to 72) | 0.566 |
| Sex, male, n (%) | 197 (80) | 217 (72) | 0.013 |
| Shockable rhythm, n (%) | 156 (64) | 152 (50) | 0.001 |
| Witnessed cardiac arrest, n (%) | 222 (91) | 267 (88) | 0.437 |
| BLS, n (%) | 140 (57) | 152 (50) | 0.112 |
| Adrenaline used, n (%) | 163 (67) | 201 (69) | 0.822 |
| Time to ROSC, min, median (IQR) | 20 (13 to 28) | 20 (13 to 27) | 0.935 |
| Therapeutic hypothermia, n (%) | 176 (72) | 135 (45) | 0.001 |
| SAPS II score, median (IQR) | 60 (47 to 69) | 59 (44 to 68) | 0.691 |
| ICU survival, n (%) | 198 (81) | 231 (76) | 0.196 |
| 12‐month survival, n (%) | 124 (51) | 123 (40) | 0.001 |
| Good outcome at 12 months, n (%) | 116 (47) | 97 (32) | 0.001 |
BLS indicates bystander‐initiated basic life support; ICU, intensive care units; IQR, interquartile range; ROSC, return of spontaneous circulation; SAPS II, Simplified Acute Physiology Score II.