The VITAH Trial-Vitamin D Supplementation and Cardiac Autonomic Tone in Patients with End-Stage Kidney Disease on Hemodialysis: A Blinded, Randomized Controlled Trial.

In response to conventional vitamin D therapy, participants who remained vitamin D deficient showed a trend towards an increased LF:HF ( p = 0.06), an increase not observed in subjects who achieved vitamin D levels within the insufficient and sufficient ranges ( p < 0.001 vs. deficient vitamin D group) ( Appendix Table A1 , Figure 3 ).

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