Citation

Ammerman BA, Jacobucci R, McCloskey MS. J. Clin. Psychol. (Hoboken) 2019; 75(6): 1084-1097.

Affiliation

Department of Psychology, Temple University, Philadelphia, Pennsylvania.

Copyright

(Copyright © 2019, John Wiley and Sons)

DOI

10.1002/jclp.22754

PMID

30735571

Abstract

OBJECTIVE: The nonsuicidal self-injury (NSSI) disorder diagnostic criteria have been the focus of empirical study. However, Criterion A (i.e., required frequency and timeframe) has received relatively limited attention. The current study aimed to examine the relationship between past 12-month NSSI frequency and eight NSSI behavior features among individuals with past 12-month and 1-month NSSI.

METHOD: Participants were 723 undergraduate students reporting at least 1 past 12-month NSSI act and completed online questionnaires. Decision trees and structural equation model trees were utilized to examine the relationship between NSSI frequency and behavior features.

RESULTS: Results highlight several potential subgroups: high (i.e., greater than 49 acts), moderate-to-high (i.e., 19-48 acts), low-to-moderate (i.e., 7-18 acts), and low (i.e., fewer than 6 acts) frequency subgroups.

CONCLUSIONS: Findings suggest that increasing the NSSI disorder criterion A frequency cutoff or requiring at least one past month NSSI act may better demarcate individuals with more severe NSSI behavior.

© 2019 Wiley Periodicals, Inc.

Language: en

Keywords

NSSI disorder; exploratory data mining; nonsuicidal self-injury frequency; nonsuicidal self-injury severity