Table 2.
Association Between Resuscitation Time on Scene and 1-Month Survival After Out-of-Hospital Cardiac Arrest
| Total | Resuscitation time on scene (min) | P value for trend |
||||
|---|---|---|---|---|---|---|
| <5 | 5–9 | 10–14 | ≥15 | |||
| Total | ||||||
| 1-month survival, n/N (%) | 367/3,756 (9.8) | 104/767 (13.6) | 170/1,666 (10.2) | 75/870 (8.6) | 18/453 (4.0) | |
| Crude OR (95% CI) | Ref. | 0.72 (0.56–0.94) | 0.60 (0.44–0.82) | 0.26 (0.16–0.44) | <0.001 | |
| Adjusted OR (95% CI)A | Ref. | 0.65 (0.49–0.85) | 0.56 (0.40–0.79) | 0.21 (0.12–0.37) | <0.001 | |
| Adjusted OR (95% CI)B | Ref. | 0.64 (0.49–0.85) | 0.57 (0.41–0.81) | 0.23 (0.13–0.40) | <0.001 | |
| 0 years old | ||||||
| 1-month survival, n/N (%) | 144/1,494 (9.6) | 54/429 (12.6) | 59/680 (8.7) | 23/267 (8.6) | 8/118 (6.8) | |
| Crude OR (95% CI) | Ref. | 0.66 (0.45–0.98) | 0.66 (0.39–1.09) | 0.51 (0.23–1.09) | 0.010 | |
| Adjusted OR (95% CI)A | Ref. | 0.59 (0.39–0.89) | 0.54 (0.31–0.94) | 0.30 (0.13–0.69) | <0.001 | |
| Adjusted OR (95% CI)B | Ref. | 0.60 (0.39–0.91) | 0.56 (0.32–0.98) | 0.31 (0.13–0.72) | 0.001 | |
| 1–7 years old | ||||||
| 1-month survival, n/N (%) | 119/984 (12.1) | 38/232 (16.4) | 52/473 (11.0) | 23/194 (11.9) | 6/85 (7.1) | |
| Crude OR (95% CI) | Ref. | 0.63 (0.40–0.99) | 0.69 (0.39–1.20) | 0.39 (0.16–0.95) | 0.027 | |
| Adjusted OR (95% CI)A | Ref. | 0.59 (0.37–0.95) | 0.72 (0.40–1.30) | 0.36 (0.14–0.92) | 0.046 | |
| Adjusted OR (95% CI)B | Ref. | 0.59 (0.37–0.95) | 0.73 (0.40–1.32) | 0.36 (0.14–0.92) | 0.050 | |
| 8–17 years old | ||||||
| 1-month survival, n/N (%) | 104/1,278 (8.1) | 12/106 (11.3) | 59/513 (11.5) | 29/409 (7.1) | 4/250 (1.6) | |
| Crude OR (95% CI) | Ref. | 1.02 (0.53–1.97) | 0.60 (0.29–1.22) | 0.13 (0.04–0.41) | <0.001 | |
| Adjusted OR (95% CI)A | Ref. | 0.62 (0.30–1.27) | 0.36 (0.17–0.78) | 0.06 (0.02–0.20) | <0.001 | |
| Adjusted OR (95% CI)B | Ref. | 0.62 (0.30–1.27) | 0.38 (0.18–0.83) | 0.07 (0.02–0.25) | <0.001 | |
AModel A: adjusted for sex, witness status, location of arrest, first documented rhythm, etiology of arrest, dispatcher cardiopulmonary resuscitation (CPR) instructions, layperson CPR, shock delivery by public access automated external defibrillator (AED), and time from call to initiation of CPR by emergency medical services (EMS) personnel. BModel B: adjusted for sex, witness status, location of arrest, first documented rhythm, etiology of arrest, dispatcher CPR instructions, layperson CPR, shock delivery by public access AED, time from call to initiation of CPR by EMS personnel, shock delivery by EMS before transport, epinephrine administration before transport, and advanced airway management before transport. CI, confidence interval; OR, odds ratio.