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Predictive power of the DASA-IV: Variations in rating method and timescales

Nqwaku, M, Draycott, Simon, Aldridge-Waddon, L, Bush, E-L, Tsirimokou, A, Jones, D and Puzzo, I (2018) Predictive power of the DASA-IV: Variations in rating method and timescales International Journal of Mental Health Nursing.

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This project evaluated the predictive validity of the Dynamic Appraisal of Situational Aggression – Inpatient Version (DASA-IV) in a high-secure psychiatric hospital in the UK over 24 hours and over a single nursing shift. DASA-IV scores from three sequential nursing shifts over a 24-hour period were compared with the mean (average of three scores across the 24- hour period) and peak (highest of the three scores across the 24-hour period) scores across these shifts. In addition, scores from a single nursing shift were used to predict aggressive incidents over each of the following three shifts. The DASA-IV was completed by nursing staff during handover meetings, rating 43 male psychiatric inpatients over a period of 6 months. Data were compared to incident reports recorded over the same period. Receiver operating characteristic (ROC) curves and generalized estimating equations assessed the predictive ability of various DASA-IV scores over 24-hour and single-shift timescales. Scores from the DASA-IV based on a single shift had moderate predictive ability for aggressive incidents occurring the next calendar day, whereas scores based on all three shifts had excellent predictive ability. DASA-IV scores from a single shift showed moderate predictive ability for each of the following three shifts. The DASAIV has excellent predictive ability for aggressive incidents within a secure setting when data are summarized over a 24-hour period, as opposed to when a single rating is taken. In addition, it has moderate value for predicting incidents over even shorter timescales.

Item Type: Article
Divisions : Faculty of Health and Medical Sciences > School of Psychology
Authors :
Nqwaku, M
Aldridge-Waddon, L
Bush, E-L
Tsirimokou, A
Jones, D
Puzzo, I
Date : 10 May 2018
DOI : 10.1111/inm.12464
Copyright Disclaimer : This is the peer reviewed version of an article which has been published in final form at This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions
Uncontrolled Keywords : aggression, DASA-IV, forensic inpatient, prediction, risk assessment
Depositing User : Melanie Hughes
Date Deposited : 16 May 2018 08:49
Last Modified : 01 Nov 2019 13:01

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