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Hospital costs higher for those with low vitamin D (7,000 people in NE Germany) – Nov 2017

Vitamin D and health care costs: results from two independent population-based cohort studies

Clinical Nutrition, DOI: http://dx.doi.org/10.1016/j.clnu.2017.10.014
A. Hannemann', H. Wallaschofski, M. Nauck, P. Marschall, S. Flessa, H.J. Grabe, C.O. Schmidt, S.E. Baumeister


Items in both VitaminDWiki categories: "Cost savings with Vitamin D" + "Trauma & Surgery" 

Background & Aims
Vitamin D deficiency is associated with higher morbidity. However, there is few data regarding the effect of vitamin D deficiency on health care costs. This study examined the cross-sectional and longitudinal associations between the serum 25-hydroxy vitamin D concentration (25OHD) and direct health care costs and hospitalization in two independent samples of the general population in North-Eastern Germany.

We studied 7,217 healthy individuals from the ‘Study of Health in Pomerania’ (SHIP n=3,203) and the ‘Study of Health in Pomerania-Trend’ (SHIP-Trend n=4,014) who had valid 25OHD measurements and provided data on annual total costs, outpatient costs, hospital stays, and inpatient costs. The associations between 25OHD concentrations (modelled continuously using factional polynomials) and health care costs were examined using a generalized linear model with gamma distribution and a log link. Poisson regression models were used to estimate relative risks of hospitalization.

In cross-sectional analysis of SHIP-Trend, non-linear associations between the 25OHD concentration and inpatient costs and hospitalization were detected: participants with 25OHD concentrations of 5, 10 and 15 ng/ml had 226.1%, 51.5% and 14.1%, respectively, higher inpatient costs than those with 25OHD concentrations of 20 ng/ml (overall p-value=0.001) in multivariable models.

We found a relation between lower 25OHD concentrations and increased inpatient health care costs and hospitalization. Our results thus indicate an influence of vitamin D deficiency on health care costs in the general population.

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