RT Journal Article SR Electronic T1 Design and validation of a predictive model for 1-year hospital admission in HIV patients on antiretroviral treatment JF European Journal of Hospital Pharmacy JO Eur J Hosp Pharm FD British Medical Journal Publishing Group SP ejhpharm-2015-000788 DO 10.1136/ejhpharm-2015-000788 A1 Inés Montes-Escalante A1 Patricia Monje-Agudo A1 Elena Calvo-Cidoncha A1 Carmen V Almeida-González A1 Ramón Morillo-Verdugo YR 2016 UL http://ejhp.bmj.com/content/early/2016/01/27/ejhpharm-2015-000788.abstract AB Objectives To develop and validate a model for predicting the risk of hospital admission within 1 year in the HIV population under antiretroviral treatment.Methods We conducted a retrospective observational study. Patients receiving antiretroviral treatment for at least 1 year who were followed by the pharmacy service in a Spanish-speaking hospital between January 2008 and December 2012 were included. Demographics, and clinical and pharmacotherapy variables, were included in the model design. To find prognostic factors for hospital admission a multivariate logistic regression model was created after performing a univariate analysis. Model validity was determined by the shrinkage method and the model discrimination by Harrell's C-index.Results 442 patients were included in the study. The variables ‘CD4 count <200 (cells/µL)’, ‘drug/alcohol use’, ‘detectable viral load (>50 copies/mL)’, ‘number of previous admissions’, and ‘number of drugs different from antiretroviral treatment’ were the independent predictors of risk of hospital admission. Probabilities predicted by the model showed an R2=0.98 for the development sample and an R2=0.86 for the validation sample. The Harrell's C index for the development and validation data were 0.82 (95% CI 0.77 to 0.87) and 0.80 (95% CI 0.73 to 0.88), respectively.Conclusions The model developed in this study may be useful in daily practice for identifying HIV patients at high risk of 1-year hospital admission.