Table 4 Subgroup analysis to investigate the relationship between geographical location and TG, TC, HDL, LDL

TG

No. of studies

5

3

3

3

I²

90%

0%

90%

57%

SMD(95%CI)

1.02(0.18, 1.86)

-0.23(-0.57, 0.11)

0.27(-0.67,1.21)

0.08(-0.10,0.26)

P

0.02

0.18

0.58

0.39

TC

No. of studies

4

2

3

3

I²

80%

0%

96%

53%

SMD(95%CI)

0.42(-0.24, 1.07)

0.06(-0.36, 0.49)

1.45(-0.20, 3.10)

0.04(-0.13,0.22)

P

0.21

0.78

0.08

0.62

HDL

No. of studies

5

3

3

2

I²

77%

0%

86%

0%

SMD(95%CI)

-0.41(-0.93, 0.11)

0.27(-0.07,0.60)

0.07(-0.71,0.84)

-0.02(-0.17,0.13)

P

0.12

0.12

0.87

0.78

LDL

No. of studies

5

3

3

2

I²

90%

8%

96%

86%

SMD(95%CI)

0.78(-0.05, 1.61)

0.00(-0.35,0.36)

0.91(-0.76, 2.59)

0.19(-0.25,0.64)

P

0.07

0.98

0.28

0.39