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Table 5 Association analysis of composite gene score of vitamin D SNPs (GC, CYP2R1 and DHCR7) used as a genetic Instrument for their association with T2D

From: A Bidirectional Mendelian Randomization Study to evaluate the causal role of reduced blood vitamin D levels with type 2 diabetes risk in South Asians and Europeans

VitD_T2D

N

OR

LCI

UCI

P_Val

Z score

Direction

AIDHS/SDS

2388

1.004

1.00

1.01

2.30E-02

  

SIKH REPLICATION

1846

1.002

1.00

1.01

4.11E-01

  

SOUTH ASIAN META

4234

1.003

1.00

1.01

2.90E-02

2.19

 +  + 

Twins UK

3679

0.89

0.56

1.42

6.26E-01

  

1958 BC

4993

1.00

0.99

1.05

7.92E-01

  

CCHS/CGPS/CIHDS

28,372

1.00

0.99

1.004

6.19E-01

  

PREVEND

3649

1.00

0.98

1.03

6.79E-01

  

Meta-Analysis

44,927

1.002

1.001

1.005

1.20E-01

1.54

 +  + – +  +  +