Table 2.
Phasic comparisons of BCPR and outcomes between 2011 and 2010/2012 in tsunami-affected prefectures
| BCPR and outcomes | Impact phase | Adjusted OR (95% CI) with 2010/2012 as a reference |
Postimpact phase | Adjusted OR (95% CI) with 2010/2012 as a reference |
||
| 2011 (N=882) |
2010/2012 (N=1565) |
2011 (N=1179) |
2010/2012 (N=2454) |
|||
| BCPR rate, no (%) | 375 (42.5) | 754 (48.2) | 0.82 (0.68 to 0.99)* | 510 (43.3) | 1068 (43.5) | 0.99 (0.84 to 1.16)† |
| 1 month survival, no (%) | 75 (8.5) | 168 (10.7) | 0.72 (0.52 to 0.99)‡ | 103 (8.7) | 200 (8.2) | 1.02 (0.78 to 1.33)§ |
| Neurologically favourable outcome, no (%) | 35 (4.0) | 82 (5.2) | 0.62 (0.38 to 0.98)¶ | 48 (4.1) | 107 (4.4) | 0.89 (0.61 to 1.29)** |
Bold figures indicate significant results.
*Among the other factors including in the logistic regression model, age (adjusted OR; 95% CI, 0.93; 0.88 to 0.99/10 years), family bystander (0.52: 0.38 to 0.71), and DA-CPR provision (7.07; 5.89 to 8.5) were significantly associated with BCPR rate.
†Among the other factors including in the logistic regression model, age (0.92; 0.87 to 0.97/10 years), family bystander (0.49: 0.37 to 0.64) and DA-CPR provision (9.27; 7.92 to 10.9) were significantly associated with BCPR rate.
‡Among the other factors including in the logistic regression model, age (0.81; 0.75 to 0.88/10 years), EMS response time (0.38; 0.31 to 0.48/10 min), time interval of witness-to-emergency call (0.71; 0.59 to 0.91/10 min), male patients (1.43; 1.01 to 2.03), daytime (7:00–19:00 hours) OHCA (1.54; 1.13 to 2.11), shockable initial rhythm (6.93; 4.92 to 9.76) and epinephrine administration (0.64; 0.41 to 0.99) were significantly associated with 1-month survival.
§Among the other factors including in the logistic regression model, age (0.86; 0.80 to 0.92/10 years), EMS response time (0.46; 0.39 to 0.56/10 min), time interval of witness-to-emergency call (0.66; 0.57 to 0.80/10 min), cardiac aetiology (0.67; 0.50 to 0.89), and shockable initial rhythm (6.93; 4.92 to 9.76) were significantly associated with 1-month survival.
¶Among the other factors including in the logistic regression model, age (0.76; 0.69 to 0.85/10 years), EMS response time (0.29; 0.23 to 0.39/10 min), time interval of witness-to-emergency call (0.54; 0.41 to 0.79/10 min), shockable initial rhythm (12.4; 7.34 to 20.9), and epinephrine administration (0.18; 0.07 to 0.44) were significantly associated with neurologically favourable outcome.
**Among the other factors including in the logistic regression model, age (0.87; 0.79 to 0.97/10 years), EMS response time (0.39; 0.31 to 0.51/10 min), time interval of witness-to-emergency call (0.53; 0.43 to 0.69/10 min), shockable initial rhythm (12.4; 7.34 to 20.9) and cardiac aetiology (1.53; 1.07 to 2.2) were significantly associated with neurologically favourable outcome.
BCPR, bystander cardiopulmonary resuscitation; DA-CPR, dispatcher-assisted CPR; EMS, emergency medical service.