Table 3.
Association of Bystander and Prehospital Patient Factors With High Quality of CPR (N=220)
| Variable | High Quality of CPR | Univariable Analysis | Multivariable Analysis | ||
|---|---|---|---|---|---|
| n/N (%) | OR (95% CI) | P Value | OR (95% CI) | P Value | |
| Year (1‐y increment) | 1.245 (1.055–1.470) | 0.009 | 1.461 (1.055–2.024) | 0.022 | |
| Patients’ sex | |||||
| Male | 65/126 (51.6) | Reference | … | … | |
| Female | 56/94 (59.6) | 1.383 (0.806–2.374) | 0.239 | … | … |
| Patient's age (1‐y increment) | … | 0.986 (0.970–1.003) | 0.097 | … | … |
| Good activities of daily living before arrest | |||||
| Disability | 46/88 (52.3) | Reference | … | … | |
| Good | 74/131 (56.5) | 1.19 (0.689–2.039) | 0.539 | … | … |
| Cause | |||||
| Noncardiac | 13/30 (43.3) | Reference | … | … | |
| Cardiac | 107/190 (56.3) | 1.473 (0.781–3.190) | 0.325 | … | … |
| Witnessed | |||||
| No | 58/109 (53.2) | Reference | … | … | |
| Yes | 63/111 (56.8) | 1.154 (0.678–1.964) | 0.597 | … | … |
| Type of bystander CPR | |||||
| Conventional CPR with rescue breathing training | 99/186 (53.2) | Reference | … | … | |
| Chest compression–only CPR training | 22/34 (64.7) | 1.678 (0.766–3.676) | 0.196 | … | … |
| Locationa | |||||
| Home | 94/181 (51.9) | Reference | … | … | |
| Public place | 20/28 (71.4) | 2.314 (0.969–5.524) | 0.059 | … | … |
| Other | 3/5 (60.0) | 1.388 (0.227–8.507) | 0.723 | … | … |
| Time from call to CPR by EMS personnel, median (IQR), minsb | 1.003 (0.893–1.126) | 0.963 | … | … | |
| Bystanders’ sexc | |||||
| Male | 36/67 (53.7) | Reference | … | … | |
| Female | 35/78 (44.9) | 0.701 (0.364–1.350) | 0.288 | … | … |
| Bystanders’ age (1‐y increment)d | … | 0.960 (0.942–0.979) | <0.001 | 0.961 (0.931–0.992) | 0.015 |
| Occupatione | |||||
| No healthcare provider | 62/114 (54.4) | Reference | … | … | |
| Healthcare provider | 35/50 (70.0) | 1.957 (0.964–3.974) | 0.063 | … | … |
| Previous CPR trainingf | |||||
| No | 10/28 (40.0) | Reference | Reference | ||
| Yes | 33/50 (66.0) | 3.494 (1.325–9.213) | 0.011 | 3.432 (1.170–10.071) | 0.025 |
CPR indicates cardiopulmonary resuscitation; EMS, emergency medical service; IQR, interquartile range; OR, odds ratio.
a
Data of 6 patients were missing.
b
Data of 5 patients were missing.
c
Data of 75 bystanders were missing or unknown.
d
Data of 14 bystanders were missing.
e
Data of 56 bystanders were missing or unknown.
f
Data of 142 bystanders were missing or unknown.