title: Psychometric properties of the Dutch version of the Attitude Towards Deliberate Self-Harm Questionnaire.
abstract: The attitude of nurses and treatment staff is crucial in the treatment of patients who self-harm. However, many patients experience that attitude as negative. The aim of this study was to investigate the psychometric properties of the Dutch version of the Attitude Towards Deliberate Self-Harm Questionnaire. A total of 261 questionnaires were used to measure validity and reliability. Sensitivity to change was measured using a post-test measurement (n = 171) and a subgroup of 78 participants were given the questionnaire twice for test-retest measurement. Factor analysis revealed four factors explaining 33% of the variance. Cronbach's alpha values ranged 0.585-0.809, with 0.637 for the total scale. Intraclass correlation coefficient was assessed in order to estimate test-retest reliability, revealing the questionnaire was stable over time; the exception was factor 3, which had a value of 0.63. Sensitivity to change was found for the total score, factor one and two, and for three of the five items of factor three. We conclude that the Dutch version of the Attitude Towards Deliberate Self-Harm Questionnaire possesses adequate psychometric properties and is potentially an acceptable instrument for measuring the attitude of nurses and health-care staff towards patients who self-harm in Dutch-speaking countries.
authors.affiliation: Palier, Intensive Treatment Centre, the Hague, the Netherlands.|Department of Health, Sports and Welfare/Cluster Nursing, Research Group Mental Health Nursing, Inholland University of Applied Sciences, Amsterdam, the Netherlands.
authors.forename: Nienke
authors.initials: N
authors.lastname: Kool
authors.affiliation: Parnassia Academy, Parnassia Psychiatric Institute, the Hague, the Netherlands.|Department of Health, Sports and Welfare/Cluster Nursing, Research Group Mental Health Nursing, Inholland University of Applied Sciences, Amsterdam, the Netherlands.
authors.forename: Berno
authors.initials: B
authors.lastname: van Meijel
authors.affiliation: Department of Health, Sports and Welfare/Cluster Nursing, Research Group Mental Health Nursing, Inholland University of Applied Sciences, Amsterdam, the Netherlands.
authors.forename: Jaap
authors.initials: J
authors.lastname: van der Bijl
authors.affiliation: Research Group for Social Psychiatry and Mental Health Nursing, HAN University of Applied Sciences, Nijmegen, the Netherlands.|Pro Persona GGZ, ProCES, Wolfheze, the Netherlands.
authors.forename: Bauke
authors.initials: B
authors.lastname: Koekkoek
authors.affiliation: Department of Clinical Psychology, and EMGO+, Institute for Health and Care Research, VU University, Amsterdam, the Netherlands.
authors.forename: Ad
authors.initials: A
authors.lastname: Kerkhof
mesh_terms: D000328:Adult; D001291:Attitude of Health Personnel; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009426:Netherlands; D011594:Psychometrics; D015203:Reproducibility of Results; D016728:Self-Injurious Behavior / Q000523:psychology*; D011795:Surveys and Questionnaires; D055815:Young Adult
keywords: Attitude Towards Deliberate Self-Harm Questionnaire; attitudes; self-harm; validation study