Jay Moss1, Abby Li2, James Tobin2, Izak S Weinstein2, Tetsuhiro Harimoto2, Krista L Lanctôt3. 1. Department of Psychiatry, Faculty of Medicine, University of Toronto. Electronic address: jay.moss@sunnybrook.ca. 2. Department of Psychiatry and Neuropsychopharmacology Research Program, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada. 3. Department of Psychiatry, Faculty of Medicine, University of Toronto; Department of Pharmacology/Toxicology, Faculty of Medicine, University of Toronto; Department of Psychiatry and Neuropsychopharmacology Research Program, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada.
Abstract
OBJECTIVE: To determine predictors of time to readmission to a general psychiatry inpatient unit. METHOD: Data from the Minimum Data Set-Mental Health (MDS-MH), a standardized assessment used to collect demographic and clinical information, were retrospectively reviewed from April 2006 through October 2008. A total of 758 patients were eligible for the study. A set of clinically relevant predictors was generated based on a literature review. A Cox regression model was applied to determine which variables were most predictive of shorter time to readmission, and their respective hazard ratios (HR). RESULTS: Covariates that were significantly associated with readmission (HR [95% CI]) included receiving a pass (3.48 [2.33, 5.17], p ≤ 0.0005), 1-2 psychiatric admissions in the past two years (15.63 [7.50, 32.55], p ≤ 0.0005), and more than 3 psychiatric admissions in the past two years (24.15 [11.58, 50.36], p ≤ 0.0005). Post hoc analysis indicated that those issued passes were more commonly male (57.1% vs. 43.9%, p=0.03), with a longer length of stay (25.4 ± 21.2 days vs. 18.7 ± 21.1 days, p=0.008), and higher GAF score (62.8 ± 11.1 vs. 57.8 ± 13.9, p=0.003), but were otherwise similar. CONCLUSIONS: The factors that were associated with reduced time to readmission were a history of previous admissions and receipt of a pass prior to discharge. These results suggest that while physicians may be able to identify patients at high risk of early readmission, issuing a pass may not fully mitigate this risk. There is a need for critical research evaluating the potential benefits of passes.
OBJECTIVE: To determine predictors of time to readmission to a general psychiatry inpatient unit. METHOD: Data from the Minimum Data Set-Mental Health (MDS-MH), a standardized assessment used to collect demographic and clinical information, were retrospectively reviewed from April 2006 through October 2008. A total of 758 patients were eligible for the study. A set of clinically relevant predictors was generated based on a literature review. A Cox regression model was applied to determine which variables were most predictive of shorter time to readmission, and their respective hazard ratios (HR). RESULTS: Covariates that were significantly associated with readmission (HR [95% CI]) included receiving a pass (3.48 [2.33, 5.17], p ≤ 0.0005), 1-2 psychiatric admissions in the past two years (15.63 [7.50, 32.55], p ≤ 0.0005), and more than 3 psychiatric admissions in the past two years (24.15 [11.58, 50.36], p ≤ 0.0005). Post hoc analysis indicated that those issued passes were more commonly male (57.1% vs. 43.9%, p=0.03), with a longer length of stay (25.4 ± 21.2 days vs. 18.7 ± 21.1 days, p=0.008), and higher GAF score (62.8 ± 11.1 vs. 57.8 ± 13.9, p=0.003), but were otherwise similar. CONCLUSIONS: The factors that were associated with reduced time to readmission were a history of previous admissions and receipt of a pass prior to discharge. These results suggest that while physicians may be able to identify patients at high risk of early readmission, issuing a pass may not fully mitigate this risk. There is a need for critical research evaluating the potential benefits of passes.
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