Table 3.
Actual survival and predicted survival (assuming availability of public access defibrillators) by suitability of site of cardiopulmonary arrest for public access defibrillator. Figures are numbers (percentages) of arrests unless stated otherwise
| Site
|
Response time ⩽3 min
|
Response time >3 min
|
Overall total
|
Actual overall survival
|
Predicted overall survival*
|
||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Total
|
Patients defibrillated
|
Patients survived
|
Total
|
Patients defibrillated
|
Patients survived
|
No
|
% (95% CI)
|
No
|
% (95% CI)
|
||||
| Not suitable | 1136 | 739 (65.1) | 113 (9.9) | 10 625 | 5867 (55.2) | 381 (3.6) | 11 761 | 494 | 4.2 (3.8 to 4.6) | 494 | 4.2 (3.8 to 4.6) | ||
| Possibly suitable | 48 | 36 (75.0) | 4 (8.3) | 395 | 265 (67.1) | 16 (4.1) | 443 | 20 | 4.5 (2.6 to 6.4) | 37 | 8.3 (0.5 to 16.2) | ||
| Suitable | 340 | 294 (86.5) | 55 (16.2) | 2 306 | 1633 (70.8) | 175 (7.6) | 2 646 | 230 | 8.7 (7.6 to 9.8) | 428 | 16.2 (12.3 to 20.1) | ||
| All sites | 1524 | 1069 (70.1) | 172 (11.3) | 13 326 | 7765 (58.3) | 572 (4.3) | 14 850† | 744 | 5.0 (4.7 to 5.4) | 959 | 6.5 (5.7 to 7.2) | ||
*
Model assumes that survival among patients where the response time was >3 minutes becomes equivalent to that in the ⩽3 minute group were public access defibrillators to be available at suitable or possibly suitable sites.
†
Excludes 13 patients with missing data on defibrillation, 97 with missing response time, and 119 with missing outcome.