title: Lack of a "Weekend Effect" for Renal Transplant Recipients.
abstract: The "weekend (WE) effect" defines the association between WE hospital admissions and higher rate of mortality. The aim of this study was to evaluate the relationship between WE effect and renal transplant recipients (RTRs) using the database of the Emilia-Romagna region (ERR), Italy. We included ERR admissions of RTRs ( International Classification of Diseases, Ninth Revision, Clinical Modification [ ICD-9-CM] code V420) between 2000 and 2013. In-hospital mortality, admissions due to cardiovascular events (CVEs), and the Elixhauser score were evaluated on the basis of ICD-9-CM codification. Out of 9063 hospital admissions related to 3648 RTRs (mean age 53 ± 13 years, 62.9% male), 1491 (16.5%) were recorded during the WE. During the follow-up period, 1581 (17.4%) patients deceased and 366 (4%) had CVEs. Length of hospital stay (LOS) was 9.7 ± 12.1 days. Logistic regression analysis showed that only LOS was independently associated with WE admissions (odds ratio: 1594, confidence interval: 1.385-1.833; P < .001). Renal transplant recipients are not exposed to higher risk of adverse outcome during WE admissions. However, WE admissions were characterized by an increased duration of hospitalization.
authors.affiliation: 1 Department of Medical Sciences, Clinica Medica Unit, School of Medicine, University of Ferrara, University Hospital of Ferrara, Ferrara, Italy.
authors.forename: Roberto
authors.initials: R
authors.lastname: Manfredini
authors.affiliation: 2 Department of Internal Medicine, University Hospital of Ferrara, Ferrara, Italy.
authors.forename: Massimo
authors.initials: M
authors.lastname: Gallerani
authors.affiliation: 1 Department of Medical Sciences, Clinica Medica Unit, School of Medicine, University of Ferrara, University Hospital of Ferrara, Ferrara, Italy.
authors.forename: Alfredo De
authors.initials: A
authors.lastname: Giorgi
authors.affiliation: 1 Department of Medical Sciences, Clinica Medica Unit, School of Medicine, University of Ferrara, University Hospital of Ferrara, Ferrara, Italy.
authors.forename: Benedetta
authors.initials: B
authors.lastname: Boari
authors.affiliation: 3 Department of Biomedical Sciences and Surgical Specialties, School of Medicine, University of Ferrara, Ferrara, Italy.
authors.forename: Nicola
authors.initials: N
authors.lastname: Lamberti
authors.affiliation: 3 Department of Biomedical Sciences and Surgical Specialties, School of Medicine, University of Ferrara, Ferrara, Italy.
authors.forename: Fabio
authors.initials: F
authors.lastname: Manfredini
authors.affiliation: 4 Department of Specialistic Medicine, Nephrology Unit, University Hospital of Ferrara, Ferrara, Italy.
authors.forename: Alda
authors.initials: A
authors.lastname: Storari
authors.affiliation: 5 Department of Specialistic, Diagnostic and Experimental Medicine, School of Medicine, University of Bologna, Bologna, Italy.
authors.forename: Gaetano La
authors.initials: G
authors.lastname: Manna
authors.affiliation: 1 Department of Medical Sciences, Clinica Medica Unit, School of Medicine, University of Ferrara, University Hospital of Ferrara, Ferrara, Italy.
authors.forename: Fabio
authors.initials: F
authors.lastname: Fabbian
mesh_terms: D005260:Female; D017052:Hospital Mortality; D006760:Hospitalization / Q000706:statistics & numerical data*; D006801:Humans; D007558:Italy; D016030:Kidney Transplantation / Q000401:mortality; D007902:Length of Stay / Q000706:statistics & numerical data; D008297:Male; D008875:Middle Aged; D013997:Time Factors
keywords: Elixhauser score; ICD-9-CM; cardiovascular events; in-hospital mortality; renal transplant recipients; weekend effect