Table 2. Trend of bystander CPR, time from call to CPR, shock before EMS arrival, sustained ROSC, survival at hospital discharge in the whole population and survival at hospital discharge in the Utstein group (i.e. cardiac, bystander witnessed, shockable) over the years.
| Year | Bystander CPR (n, %) | Time from call to CPR, Mins (median, IQR) | Shock before EMS arrival (n, %) | Sustained ROSC (%) | Survival at hospital discharge (%) |
Survival at hospital discharge: Utstein group (%) |
|---|---|---|---|---|---|---|
| 2005 | 47 (29.4) | 9 [7–12] | 0 (0) | 46 (28.8) | 12 (7.5) | 7 (20) |
| 2006 | 84 (50) | 8 [2–12] | 0 (0) | 52 (31) | 28 (16.7) | 13 (35.1) |
| 2007 | 66 (44.6) | 8 [4–12] | 0 (0) | 41 (27.7) | 22 (14.9) | 10 (47.6) |
| 2008 | 86 (54.8) | 6 [2–10] | 0 (0) | 61 (38.9) | 33 (21) | 16 (50) |
| 2009 | 94 (51.9) | 8 [4–12] | 9 (5) | 62 (34.2) | 34 (18.8) | 22 (51.2) |
| 2010 | 99 (55.9) | 7 [3–11] | 14 (8) | 52 (29.4) | 24 (13.6) | 16 (57.1) |
| 2011 | 100 (58.8) | 7 [2–11] | 10 (6) | 52 (30.6) | 27 (15.9) | 14 (50) |
| 2012 | 103 (63.2) | 5 [3–9] | 20 (12) | 56 (34.4) | 32 (19.6) | 18 (56.2) |
| 2013 | 125 (66.8) | 5 [2–8] | 16 (9) | 67 (35.8) | 42 (22.5) | 22 (57.9) |
| 2014 | 113 (72.9) | 5 [3–9] | 20 (13) | 71 (45.8) | 51 (32.9) | 20 (69) |
| 2015 | 138 (83.1) | 5 [3–9] | 17 (10) | 53 (31.9) | 29 (17.5) | 7 (43.8) |
| 2016 | 123 (75.5) | 5 [4–9] | 10 (6) | 54 (33.1) | 42 (25.8) | 18 (66.7) |
| 2017 | 118 (69) | 5 [4–10] | 8 (5) | 63 (36.8) | 44 (25.8) | 15 (57.7) |
| 2018 | 122 (68.5) | 5 [3–10] | 16 (9) | 80 (44.9) | 57 (32) | 22 (71) |
| P value | P<0.001 | P<0.001 | P<0.001 | P = 0.006 | P<0.001 | P = 0.004 |