Table 1 General characteristics of study population.

From: The interaction effect of bystander cardiopulmonary resuscitation (CPR) and dispatcher CPR on outcomes after out-of-hospital cardiac arrest

Variables

 

Missing

stats

Age

Mean ± SD

0 (0.0%)

68.5 ± 15.4

Sex

Female

0 (0.0%)

4798 (34.6%)

Male

 

9066 (65.4%)

Diabetes

No

0 (0.0%)

10,731 (77.4%)

Yes

 

3133 (22.6%)

Hypertension

No

0 (0.0%)

9455 (68.2%)

Yes

 

4409 (31.8%)

Bystander witness

No

0 (0.0%)

6057 (43.7%)

Yes

 

7807 (56.3%)

Bystander CPR

No CPR

655 (4.7%)

6032 (45.7%)

Standard CPR

 

434 (3.3%)

Compression-only CPR

 

6743 (51.0%)

AED

No

49 (0.4%)

12,662 (91.7%)

Yes

 

1153 (8.3%)

Place

Non-residence

238 (1.7%)

4929 (36.2%)

Residence

 

8697 (63.8%)

Initial ECG

Non-shockable

613 (4.4%)

10,803 (81.5%)

Shockable

 

2448 (18.5%)

DA-CPR

No

288 (2.1%)

3579 (26.4%)

Yes

 

9997 (73.6%)

CPC*

Poor

0 (0.0%)

12,740 (91.9%)

Good

 

1124 (8.1%)

Survival to discharge

No

0 (0.0%)

12,184 (87.9%)

Yes

 

1680 (12.1%)

  1. CPR Cardiopulmonary resuscitation; AED Automated electrical defibrillator; ECG Electrocardiography; DA-CPR Dispatcher-assisted CPR; CPC Cerebral Performance Category.
  2. *A CPC score of 1 or 2 was considered a good neurological outcome, and a score of 3, 4, or 5 was considered a poor neurological outcome.
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