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Eur Neuropsychopharmacol. 2013 Aug;23(8):872-8. doi: 10.1016/j.euroneuro.2013.04.002. Epub 2013 May 1.

Schizophrenia, antipsychotics and risk of hip fracture: a population-based analysis.

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1
Centre for Schizophrenia, Aalborg Psychiatric Hospital, Aarhus University Hospital, Brandevej 5, 9220 Aalborg Øst, Denmark.

Abstract

In a nationwide study using linkage of Danish hospital registers we examined predictors of hip fracture (ICD-10: S72) in 15,431 patients with schizophrenia (ICD-10: F20 or ICD-8: 295) and 3,807,597 population controls. Shorter education, disability pension, lifetime alcohol abuse, somatic co-morbidity, antipsychotics (IRR=1.19; 95% CI 1.15-1.24), antidepressant (IRR=1.18; 95% CI 1.16-1.20), anticholinergics (IRR=1.29; 95% CI 1.22-1.36), benzodiazepines (IRR=1.06; 95% CI 1.04-1.08) and corticosteroids (IRR=1.44; 95% CI 1.36-1.53) were significant predictors. In 556 persons with schizophrenia and hip fracture (matched to 1:3 to schizophrenia controls without hip fracture), antipsychotic polypharmacy predicted hip fracture. Analyses among antipsychotic monotherapy patients showed no differential effect of individual antipsychotics. A dose-response relationship of hip fracture and lifetime antipsychotics consumption was found (IRR=1.13 95% CI 1.07-1.19) and both prolactin-increasing and non-prolactin-increasing antipsychotics contributed to the effect. In conclusion, several factors, including complex psychopharmacological treatment, contribute in the prediction of hip fracture in large populations. Preventive strategies should focus attention to severely ill patients with high likelihood of a receiving complex psychopharmacologic treatment and high doses of antipsychotics.

KEYWORDS:

Anticholinergics; Dose–response relationship; First-generation antipsychotics (FGA); Hyperprolactinemia; Schizophrenia; Second-generation antipsychotics (SGA)

PMID:
23642346
DOI:
10.1016/j.euroneuro.2013.04.002
[Indexed for MEDLINE]
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