Rationale and design of a randomized controlled trial of the effect of retinol and vitamin D supplementation on treatment in active pulmonary tuberculosis patients with diabetes.

What Was Tested

The paper reports a study of Vitamin D, K2, Magnesium and Zinc in the context of diabetic retinopathy and glaucoma, published as a randomized controlled trial.

The association between pulmonary tuberculosis (PTB) and diabetes mellitus (DM) has been previously attracted much attention.

Diabetes alters immunity to tuberculosis, leading to more frequent treatment failure in TB patients with DM.

Who Took Part

According to the abstract, 400 patients were involved.

The age groups tagged for this paper are adults and middle-aged adults, both men and women.

Of the first 37 subjects enrolled: 8 have been randomized to VA, 10 to VD, 9 to VAD and 10 to control.

How the Study Was Run

In design terms this was a randomized, placebo-controlled and multicenter study.

Because people in this Vitamin D, K2, Magnesium and Zinc study were split into groups at random, differences between the groups are less likely to reflect who happened to join each one.

The comparison arm used a placebo, so changes seen with Vitamin D, K2, Magnesium and Zinc could be set against what happens without it.

More than one site took part, so the patients came from several places.

This is a 2×2 factorial trial.

What Was Measured

However, the effects of retinol and vitamin D supplementation in active TB patients with diabetes on treatment outcomes, immune and nutrition state are still uncertain.

Topics PubMed links to this paper include China, Cholecalciferol, Diabetes Mellitus, Dietary Supplements, Epidemiologic Research Design, Randomized Controlled Trials as Topic and Tuberculosis, Pulmonary.

What This Means in Plain Language

The paper is a randomized, placebo-controlled and multicenter study of Vitamin D, K2, Magnesium and Zinc in 400 patients in people with diabetic retinopathy and glaucoma.

With several hundred people or more, it is a fairly large study for this kind of research.

Its findings take up roughly 3 sentences of the abstract and are left out here on purpose; the source paper is the place to read them.

The publication is from 2013 (BMC infectious diseases), a journal based in England.

More context: the Vitamin D, K2, Magnesium and Zinc compound page, Diabetic retinopathy and glaucoma research.