Table 3

Subgroup analyses

Variables and cutoffNumber of studiesHR (95% CI) for subgroupI2P for subgroup effectP for subgroup difference
Sample sizes
  <300031.12 [0.93, 1.35]79%0.23
  ≥300031.21 [1.13, 1.30]0%<0.0010.46
Mean ages (years)
  <6531.09 [0.94, 1.27]61%0.24
  ≥6531.24 [1.16, 1.32]0%<0.0010.12
Male (%)
  <4021.22 [1.12, 1.33]0%<0.001
  ≥4041.14 [1.01, 1.29]68%0.040.36
Adiponectin measurements
  ELISA41.13 [1.01, 1.27]64%0.03
  Others21.25 [1.14, 1.37]0%<0.0010.20
AF confirmation
  Include AF hospitalization51.22 [1.16, 1.29]0%<0.001
  Not include AF hospitalization10.95 [0.82, 1.11]0.510.002
Follow-up duration (years)
  <1010.95 [0.82, 1.11]0.51
  ≥1051.22 [1.16, 1.29]0%<0.0010.002
AF incidence (%)
  <1531.09 [0.94, 1.27]61%0.24
  ≥1531.24 [1.16, 1.32]0%<0.0010.12
Quality scores
  =821.18 [1.06, 1.31]0%0.003
  =941.16 [1.02, 1.31]71%0.020.83