Table 1.
Characteristics According to Consent and Interview Status (n=508)
| Characteristic* | No Consent (n=86) | Consented, Not Interviewed (n=49) | Consented, Interviewed (n=373) | P Value* |
|---|---|---|---|---|
| Age, y | 62±18 | 61±14 | 60±15 | 0.67 |
| Time from call to first unit arrival, minutes | 5.2±2.3 | 5.3±2.3 | 5.1±2.0 | 0.24 |
| Men (%) | 57 (66) | 32 (65) | 272 (73) | 0.30 |
| Ventricular fibrillation (%) | 52 (61) | 25 (51) | 293 (79) | <0.0001 |
| Hypothermia arm (%) | 42 (49) | 25 (51) | 192 (52) | 0.91 |
| Bystander cardiopulmonary resuscitation (%) | 46 (54) | 31 (63) | 235 (63) | 0.52 |
| Witnessed arrest (%) | 58 (67) | 40 (82) | 294 (79) | 0.036 |
| Neurological status at discharge (%) | <0.0001 | |||
| CPC 1 | 40 (46) | 28 (57) | 262 (70) | |
| CPC 2 | 18 (21) | 14 (29) | 84 (22) | |
| CPC 3 | 5 (6) | 3 (6) | 13 (4) | |
| CPC 4 | 19 (22) | 2 (4) | 9 (2) | |
| Disabled, severity unknown | 1 (1) | 0 (0) | 1 (<1) | |
| Alive, no record | 3 (4) | 2 (4) | 4 (1) | |
| 1‐year survival (%) | 45 (52) | 32 (65) | 358 (96) | <0.0001 |
CPC indicates Cerebral Performance Category.
*
Continuous measures provide mean (SD) and dichotomous measures provide number (percentage).
*
P value based on analysis of variance for continuous variables or chi‐square for dichotomous variables.