TY  - JOUR
PY  - 2021//
TI  - Self-harm injury hospitalisations: an analysis of case selection criteria
JO  - Injury prevention
A1  - Imm, Pamela
A1  - Grogan, Brittany
A1  - Diallo, Ousmane
SP  - i49
EP  - i55
VL  - 27
IS  - S1
N2  - BACKGROUND: This study explores the impact of using different criteria to identify nonfatal hospitalisations with self-harm injuries using 2017-2018 Wisconsin discharge data. <br><br>METHODS: Using International Classification of Diseases, 10th Revision, Clinical Modification codes, we classified records by three mutually exclusive selection criteria: subset A--principal diagnosis of injury, and any code for self-harm, initial encounter only; subset B--non-injury principal diagnosis, and any code for self-harm, initial encounter only; subset C--any principal diagnosis, and any code for self-harm, subsequent and sequelae encounters only. These categories were used to conduct two separate logistic regression models. Model 1 analysed the impact of surveillance limited to a principal diagnosis of injury, initial self-harm encounter (subset B compared with A). Model 2 analysed the impact if limited to initial encounters for self-harm, regardless of principal diagnosis (subset C compared with (A+B)). Both patient-level and visit-level analyses were conducted. <br><br>RESULTS: For both patient-level models, subsets that included additional records based on an expansion of selection criteria were significantly more likely to include children (model 1: OR 2.8, model 2: OR 2.9; compared with those 25-54 years), those with mental health disorders (model 1: OR 6.5, model 2: OR 4.3) and rural residents (model 1: OR 1.2, model 2: OR 1.4). Drug-related disorder and means of self-harm were significantly different among subsets for both models. Visit-level analyses revealed similar results. <br><br>DISCUSSION: Expanding case selection criteria would better capture the scale of hospitalisation for nonfatal self-harm. Using restrictive selection criteria may result in biased understanding of the affected populations, potentially impacting the development of policy and prevention programmes.<p />  <p>Language: en</p>
LA  - en
SN  - 1353-8047
UR  - http://dx.doi.org/10.1136/injuryprev-2019-043514
ID  - ref1
ER  -