Meta-analysis of the success rate of heartbeat recovery in patients with prehospital cardiac arrest in the past 40 years in China

Table 2 Comparison of the HRR at different times

Group	Case	The test for heterogeneity			Model	Success rate	Confidence interval (95%CI)	Number of success	Number of patients
Group	Case	Q-value	P-value	I² (%)	Model	Success rate	Confidence interval (95%CI)	Number of success	Number of patients
0 to ≤5 min	58	830.18	< 0.001	94.9	Random	0.417	0.341, 0.496	1, 523	5, 453
5 to ≤10 min	66	1, 538.87	< 0.001	94.8	Random	0.143^a	0.104, 0.193	911	21, 446
10 to ≤15 min	49	153.65	< 0.001	83.8	Random	0.049^a,b	0.034, 0.069	259	4, 377
> 15 min	16	54.28	< 0.001	84.7	Random	0.022^a,b,c	0.009, 0.051	67	1, 451
Total	189	2, 576.98	< 0.001	96.3	Random	0.141	0.109, 0.182	2, 760	32, 727

^aThe difference between the 0 to≤5 min group and other three group CPR are significantly different
^bThe difference between the 5 to ≤10 min group, the 10 to ≤15 min group and the > 15 min group are significantly different
^cThe different between the > 15 min group, the 5 to ≤10 min group and 0 to≤5 min group are significantly different

ISSN: 2054-9369