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. 2013 Nov 14;5:70. doi: 10.1186/1758-5996-5-70

Table 8.

Subgroup analysis of different BMI

BMI
 Outcome
 No. of studies Pooled sample size Heterogeneity
 Overall effect
    T 2 I 2 P-value SMD [95% CI] P-value
BMI < 27
 BMI
 7
 618
 0.83
 94%
 <0.00001
 -0.27 [-0.98, 0.43]
 0.45
 
 SBP
 3
 381
 0.09
 72%
 0.03
 0.20 [-0.21, 0.60]
 0.34
 
 DBP
 3
 381
 0.10
 74%
 0.02
 0.15 [-0.27, 0.57]
 0.48
 
 FPG
 7
 788
 0.02
 38%
 0.14
 -0.05 [-0.24, 0.13]
 0.57
 
 HbA1c
 6
 720
 0.00
 0%
 0.43
 0.06 [-0.09, 0.20]
 0.43
 
 PPBS
 4
 276
 0.23
 780%
 0.003
 -0.38 [-0.91, 0.15]
 0.16
 
 TC
 5
 455
 0.37
 88%
 <0.00001
 0.26 [-0.31, 0.84]
 0.37
 
 HDL
 5
 455
 0.57
 92%
 <0.00001
 0.11 [-0.58, 0.81]
 0.75
 
 LDL
 3
 340
 0.08
 65%
 0.06
 0.30 [-0.09, 0.70]
 0.14
 
 TG
 5
 455
 0.13
 72%
 0.006
 0.33 [-0.05, 0.71]
 0.09
 
 FINS
 5
 352
 0.21
 78%
 0.001
 -0.17 [-0.63, 0.29]
 0.47
BMI ≥ 27
 BMI
 3
 370
 0.13
 79%
 0.009
 0.31 [-0.15, 0.78]
 0.18
 
 SBP
 2
 234
 0.42
 91%
 0.001
 0.69 [-0.25, 1.63]
 0.15
 
 DBP
 2
 234
 0.47
 92%
 0.0005
 0.63 [-0.36, 1.63]
 0.21
 
 FPG
 2
 300
 0.00
 0%
 0.82
 0.34 [0.11, 0.57]
 0.003
 
 HbA1c
 2
 300
 0.27
 91%
 0.001
 0.17 [-0.58, 0.93]
 0.65
 
 PPBS
 2
 300
 0.01
 29%
 0.24
 0.09 [-0.18, 0.36]
 0.51
 
 TC
 3
 370
 0.02
 30%
 0.24
 0.33 [0.08, 0.58]
 0.01
 
 HDL
 3
 370
 0.00
 0%
 0.71
 0.03 [-0.18, 0.23]
 0.79
 
 LDL
 2
 300
 0.00
 6%
 0.30
 0.32 [0.08, 0.56]
 0.008
 
 TG
 3
 370
 0.00
 4%
 0.35
 0.15 [-0.06, 0.36]
 0.17
  FINS 3 370 0.76 95% <0.00001 0.56 [-0.45, 1.57] 0.28