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Table 3 Combined SMD between intervention and control grope according to change of before and post as well as before and after intervention with heterogeneity and egger’s test

From: Evaluating the effect of vitamin D supplementation on serum levels of 25-hydroxy vitamin D, 1,25-dihydroxy vitamin D, parathyroid hormone and renin–angiotensin–aldosterone system: a systematic review and meta-analysis of clinical trials

Variables

Model

Combined

Heterogeneity

Egger’s test

SMD

95%CI

Z for SMD = 0

P value

I2(%)a

Chi square

P value

Bias

95% CI for bias

P value

25 (OH) D

random

2.20

1.38–3.02

5.25

 < 0.001

92.3

39

 < 0.001

9.02

6.97,11.07

0.003

1.25 (OH) D

Random

1.23

0.01- 2.44

1.398

0.048

86.3

7.32

0.007

-

-

-

PTH

Random

-0.75

-1.3—-0.18

2.57

0.010

82.4

11.38

0.003

-4.7

-72, 62

0.535

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BMC Nutrition

ISSN: 2055-0928

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