Table 2 Summarised study characteristics
Number of studies that reported characteristics (%) | Prospective median (95% CI) | Retrospective median (95% CI) | Overall median (95% CI) | |
|---|---|---|---|---|
Demographics | ||||
Age* | 63/67 (94%) | 52 (48–55) | 56 (55–58) | 56 (54–58) |
Male gender (%) | 64/67 (95%) | 80 (75–84) | 74 (71–77) | 75 (72–78) |
Ischemic heart disease (%) | 53/67 (79%) | 51 (41–60) | 53 (46–61) | 53 (46–59) |
Smoking (%) | 24/67 (36%) | 28 (21–38) | 28 (25–33) | 29 (25–33) |
Diabetes (%) | 47/67 (70%) | 41 (14–75) | 25 (21–30) | 27 (21–34) |
Arrest | ||||
Witnessed arrest *(%) | 51/67 (76%) | 100 (95–100) | 100 (37–100) | 100 (96–100) |
*Cardiac cause (%) | 51/67 (76%) | 85 (75–92) | 90 (83–94) | 89 (83–93) |
Non-cardiac cause (%) | 44/67 (65%) | 17 (9–29) | 13 (9–19) | 14 (10–19) |
Bystander CPR *(%) | 40/67 (60%) | 95 (68–99) | 75 (57–87) | 80 (66–90) |
Shockable rhythm* (%) | 56/67 (84%) | 70 (51–84) | 47 (39–56) | 52 (45–60) |
Non-shockable rhythm (%) | 45/67 (67%) | 41 (31–52) | 56 (43–69) | 52 (41–63) |
Time to ECMO (min) | 55/67 (82%) | 74 (55–94) | 57 (53–61) | 60 (56–64) |