[Vitamin D levels among Chilean older subjects with low energy hip fracture].
BACKGROUND
Vitamin D deficiency is a common condition affecting 40-100% of geriatric population.


OBJECTIVE
To determine the prevalence of vitamin D insufficiency and deficiency in geriatric population surgically treated for hip fracture.


METHODS
Analysis of a database of patients aged over 60 years operated for a low energy hip fracture in a three years period. Vitamin D was measured in identified patients, using a blood sample obtained on admission to the hospital. A logistic regression was carried out to evaluate age, gender, morbidity index and season as predictors of vitamin D deficiency.


RESULTS
Two hundred and twenty-eight patients aged 84 ± 7 years (82% females), were included in the analysis. One hundred eighty-three patients (80%) presented vitamin D levels below 20 ng/dl (deficiency) and 39 patients (18%) presented with levels between 20 and 30 ng/dl (insufficiency), totaling 98% of patients with hypovitaminosis D. Vitamin D deficiency was especially common among patients with higher American Society of Anesthesiologists (ASA) Physical Status Classification System and during winter-spring period. A negative correlation between age and the proportion of subjects with vitamin D deficiency was found. There was no relation between gender and vitamin D levels.


CONCLUSIONS
Vitamin D deficiency is especially prevalent in older subjects with hip fracture, reaching 98% in the studied population.
Daniel
D
Schweitzer
Pedro Pablo
PP
Amenábar
Eduardo
E
Botello
Mario
M
López
Yocelin
Y
Saavedra
Ianiv
I
Klaber
D000368:Aged; D000369:Aged, 80 and over; D002677:Chile / Q000453:epidemiology; D005260:Female; D006620:Hip Fractures / Q000453:epidemiology* / Q000209:etiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012189:Retrospective Studies; D014808:Vitamin D Deficiency / Q000150:complications / Q000453:epidemiology*