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Table 2 Comparison of the HRR at different times

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

Group Case The test for heterogeneity Model Success rate Confidence interval (95%CI) Number of success Number of patients
Q-value P-value I2 (%)
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 0.143a 0.104, 0.193 911 21, 446
10 to ≤15 min 49 153.65 < 0.001 83.8 Random 0.049a,b 0.034, 0.069 259 4, 377
> 15 min 16 54.28 < 0.001 84.7 Random 0.022a,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
  1. aThe difference between the 0 to≤5 min group and other three group CPR are significantly different
  2. bThe difference between the 5 to ≤10 min group, the 10 to ≤15 min group and the > 15 min group are significantly different
  3. cThe different between the > 15 min group, the 5 to ≤10 min group and 0 to≤5 min group are significantly different