Comparison of cardiopulmonary arrests occurring in summer and winter in terms of patient characteristics, management, and overall survival
| Summer (n = 5406) | Winter (n = 5484) | Significance1-150 | |
|---|---|---|---|
| Age | |||
| Median (IQR) | 65 (55–73) | 67 (57–74) | p < 0.01 |
| Missing | 77 | 92 | |
| Sex | |||
| Male | 3799 (70%) | 3817 (70%) | NS |
| Female | 1596 (30%) | 1660 (30%) | |
| Missing | 11 | 7 | |
| Arrest location | |||
| Home | 2800 (58%) | 2956 (61%) | p < 0.01 |
| Other location | 2025 (42%) | 1906 (39%) | |
| Missing | 581 | 622 | |
| Defibrillation | |||
| Yes | 3079 (58%) | 2949 (54%) | p < 0.001 |
| No | 2258 (42%) | 2471 (46%) | |
| Missing | 69 | 64 | |
| CPR ⩽ 4 minutes | |||
| Yes | 1718 (53%) | 1667 (51%) | NS |
| No | 1527 (47%) | 1593 (49%) | |
| No CPR/missing | 2161 | 2224 | |
| Presence of witness | |||
| No | 1154 (24%) | 1248 (26%) | p < 0.01 |
| Yes | 3578 (76%) | 3505 (74%) | |
| Missing | 674 | 731 | |
| Discharged alive | |||
| Yes | 431 (8%) | 345 (6%) | p < 0.001 |
| No | 4975 (92%) | 5139 (94%) | |
↵1-150 On χ2 or Mann-Whitney U test.
IQR, interquartile range.