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Table 3 Association analysis of composite gene score of T2D SNPs (IGF2BP2, TCF7L2 and KCNQ1) used as a genetic Instrument for their joint effects on 25(OH)D concentrations

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

Study

N

Beta

SE

P Val

Z Score

Direction

AIDHS/SDS

2675

-0.006

0.014

6.98E-01

  

SIKH REPLICATION

2197

-0.001

0.009

8.96E-01

  

SOUTH ASIAN META

4872

-0.003

0.008

7.45E-01

-0.367

– –

Twins UK

5335

0.0004

0.001

7.07E-01

  

1958 BC

5181

0.1322

0.056

1.90E-02

  

CCHS/CGPS/CIHDS

11,665

-0.0080

0.007

2.35E-01

  

PREVEND

3649

-0.0154

0.031

6.20E-01

  

Meta-Analysis

30,702

-0.0002

0.0001

8.29E-01

-0.212

– – +  + – –