From: Vitamin D and the promoter methylation of its metabolic pathway genes in association with the risk and prognosis of tuberculosis
1,25(OH)2Da
Cumulative methylation levelb
Cases
Controls
OR
95% CI
Low
High
23
50
0.30
0.14–0.66
21
42
0.33
0.15–0.73
52
9
3.78
1.48–9.62
26
17
1
ORinteraction = 4.11 (95% CI 1.26–13.36, P = 0.019)