High Prevalence of Vitamin D Insufficiency in Farming and Nonfarming Populations in South Dakota: Associations With Parathyroid Hormone, Body Fat, and Bone Density.

Lee Weidauer, Lacey McCormack, Brittany Gorres-Martens, Bonny Specker

Open access · greenAbstract read

In one paragraph

Article in Topics in clinical nutrition. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it

0cells of the map it votes in

0citing papers in PubMed

–field-weighted citation impact, top 91% of its field

1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed, 0 citations in OpenAlex.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 1 institution in 1 country.

Lee WeidauerEthel Austin Martin Program in Human Nutrition (Drs Weidauer and Specker) and Health and Nutritional Sciences Department (Dr McCormack), South Dakota State University, Brookings; and Exercise and Sports Sciences Department, Augustana College, Sioux Falls, South Dakota (Dr Gorres-Martens).

Lacey McCormackEthel Austin Martin Program in Human Nutrition (Drs Weidauer and Specker) and Health and Nutritional Sciences Department (Dr McCormack), South Dakota State University, Brookings; and Exercise and Sports Sciences Department, Augustana College, Sioux Falls, South Dakota (Dr Gorres-Martens).

Brittany Gorres-MartensEthel Austin Martin Program in Human Nutrition (Drs Weidauer and Specker) and Health and Nutritional Sciences Department (Dr McCormack), South Dakota State University, Brookings; and Exercise and Sports Sciences Department, Augustana College, Sioux Falls, South Dakota (Dr Gorres-Martens).

Bonny SpeckerEthel Austin Martin Program in Human Nutrition (Drs Weidauer and Specker) and Health and Nutritional Sciences Department (Dr McCormack), South Dakota State University, Brookings; and Exercise and Sports Sciences Department, Augustana College, Sioux Falls, South Dakota (Dr Gorres-Martens).

South Dakota State University · US

Funding

Bone Density And Later Bone Loss In Rural PopulationsR01AR047852 · NIAMS · SOUTH DAKOTA STATE UNIVERSITY · PI SPECKER, BONNY L · 2001 to 2005

$1.5M

NIAMS NIH HHS R01 AR047852

6 · The paper itself

Abstract

The purpose of this study was to investigate the role of lifestyle (farming vs nonfarming), age, season, and percent body fat on serum 25-hydroxyvitamin D (25-OHD) and parathyroid hormone (PTH). Serum 25-OHD concentrations were lower in winter than in summer and in older than in younger individuals. Dietary intake of vitamin D was associated with greater serum 25-OHD concentrations. A significant inverse relationship between PTH and 25-OHD was observed in older but not younger individuals. Trabecular volumetric bone mineral density was inversely associated with serum PTH, but not 25-OHD concentrations. Modern farm practices do not necessitate excessive sunlight exposure and that may help explain the lack of differences between farming and nonfarming populations.

Indexed as

farmingPTHruralseasonalvBMDvitamin D

Identifiers

PMID34305306

DOI10.1097/tin.0000000000000073

PMCPMC8297560

OpenAlexW2483291598

What OpenQuestion holds

Textmetadata

LicenceTDM

Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.