Table 2.
Comparison among groups depending on the method of CPR.
| Variables | No bystander CPR (N = 6032) | Standard bystander CPR (N = 434) | Compression-only CPR (N = 6743) | p | |
|---|---|---|---|---|---|
| Age | Mean ± SD | 69.1 ± 15.1 | 68.1 ± 15.8 | 68.2 ± 15.6 | .006 |
| Sex | Female | 2078 (34.4%) | 155 (35.7%) | 2332 (34.6%) | .865 |
| Male | 3954 (65.6%) | 279 (64.3%) | 4411 (65.4%) | ||
| Diabetes | No | 4672 (77.5%) | 340 (78.3%) | 5206 (77.2%) | .835 |
| Yes | 1360 (22.5%) | 94 (21.7%) | 1537 (22.8%) | ||
| Hypertension | No | 4186 (69.4%) | 297 (68.4%) | 4510 (66.9%) | .010 |
| Yes | 1846 (30.6%) | 137 (31.6%) | 2233 (33.1%) | ||
| Bystander witness | No | 2693 (44.6%) | 144 (33.2%) | 2927 (43.4%) | < .001 |
| Yes | 3339 (55.4%) | 290 (66.8%) | 3816 (56.6%) | ||
| AED | No | 5266 (87.4%) | 391 (90.1%) | 6450 (95.7%) | < .001 |
| Yes | 758 (12.6%) | 43 (9.9%) | 289 (4.3%) | ||
| Place | Non-residence | 2332 (39.2%) | 190 (44.7%) | 2188 (32.8%) | < .001 |
| Residence | 3624 (60.8%) | 235 (55.3%) | 4482 (67.2%) | ||
| Initial ECG | Non-shockable | 4954 (86.1%) | 288 (75.4%) | 5141 (78.2%) | < .001 |
| Shockable | 801 (13.9%) | 94 (24.6%) | 1436 (21.8%) | ||
| DA-CPR | No | 2733 (46.7%) | 61 (14.4%) | 594 (8.9%) | < .001 |
| Yes | 3113 (53.3%) | 362 (85.6%) | 6084 (91.1%) | ||
| CPC* | Poor | 5641 (93.5%) | 391 (90.1%) | 6098 (90.4%) | < .001 |
| Good | 391 (6.5%) | 43 (9.9%) | 645 (9.6%) | ||
| Survival to discharge | No | 5380 (89.2%) | 377 (86.9%) | 5852 (86.8%) | < .001 |
| Yes | 652 (10.8%) | 57 (13.1%) | 891 (13.2%) |
CPR Cardiopulmonary resuscitation; AED Automated electrical defibrillator; ECG Electrocardiography; DA-CPR Dispatcher-assisted CPR; CPC Cerebral performance category.
*A CPC score of 1 or 2 was considered a good neurological outcome, and a score of 3, 4, or 5 was considered a poor neurological outcome.