| | | All n = 2,491 | High-quality n = 149 | Low-quality n = 2,342 | value | Cases with missing data |
| | Patients element | | Sex, male | 1,661 (66.7) | 115 (77.2) | 1,546 (66.0) | 0.005 | | | Age, year (median, IQR) | 70 (56–79) | 62 (51.5–75.0) | 70 (56–80) | <0.001 | |
| | Medical history | | | | | | | Hypertension | 763 (30.6) | 33 (22.1) | 730 (31.2) | 0.022 | | | Diabetes mellitus | 534 (21.4) | 34 (22.8) | 500 (21.3) | 0.681 | | | Cerebrovascular disease | 187 (7.5) | 4 (2.7) | 183 (7.8) | 0.016 | | | Pulmonary disease | 65 (2.6) | 3 (2.0) | 62 (2.6) | 1.000 | | | Heart disease | 424 (17.0) | 15 (10.1) | 409 (17.5) | 0.018 | | | Malignancy | 211 (8.5) | 9 (6.0) | 202 (8.6) | 0.361 | | | Initial shockable rhythm | 528 (21.2) | 53 (35.8) | 475 (20.3) | <0.001 | 3 | | Location, home | 1,990 (79.9) | 88 (59.1) | 1,902 (81.2) | <0.001 | | | Witnessed | 1,267 (51.2) | 91 (61.5) | 1,176 (50.5) | 0.011 | 14 |
| | System element | | DACPR | 2,338 (94.8) | 136 (92.5) | 2,202 (95.0) | 0.182 | 25 | | RTI, min | 7 (6–9) | 7 (6–7) | 7 (6–9) | 0.131 | |
| | Bystander element | | Sex, male | 910 (50.5) | 46 (52.9) | 864 (50.4) | 0.662 | 689 | | Age group | | | | | | | <40 years | 383 (15.4) | 35 (23.5) | 348 (14.9) | <0.001 | | | 40–49 years | 546 (21.9) | 42 (28.2) | 504 (21.5) | | | | 50–59 years | 882 (35.4) | 57 (38.3) | 825 (35.2) | | | | ≥60 years | 680 (27.3) | 15 (10.1) | 665 (28.4) | | | | Relation with patient, family | 2,101 (86.0) | 106 (71.1) | 1,996 (86.9) | <0.001 | 46 | | Multirescuers (≥2 rescuers) | 1,064 (43.3) | 84 (56.8) | 1,312 (56.7) | 1.000 | 31 |
| | Outcome | | Prehospital ROSC | 590 (23.7) | 62 (41.6) | 528 (22.5) | <0.001 | | | Total ROSC | 751 (30.1) | 71 (47.7) | 680 (29.0) | <0.001 | 3 | | Survival discharge | 281 (11.3) | 45 (30.2) | 236 (10.1) | <0.001 | 8 | | Neurologically favorable discharge | 172 (6.9) | 38 (25.5) | 134 (5.7) | <0.001 | 1 |
|
|
CPR, cardiopulmonary resuscitation; ROSC, return of spontaneous circulation; DACPR, dispatcher-assisted CPR; RTI, response time interval.
|
