https://doi.org/10.1177/1079063220940303 Sexual Abuse 1–23 © The Author(s) 2020 Article reuse guidelines: sagepub.com/journals-permissions DOI: 10.1177/1079063220940303 journals.sagepub.com/home/sax Original Research Article The Static-99R Is Not Valid For Women: Predictive Validity in 739 Females Who Have Sexually Offended Ethan Marshall 1 , Holly A. Miller 1 , Franca Cortoni 2 , and L. Maaike Helmus 3 Abstract Although many instruments have been validated to assess risk of sexual recidivism among men, no similar tool exists for women who have sexually offended. As a result, some jurisdictions use male-based instruments to assess women despite the lack of validation research examining the predictive utility for this subgroup. This study examined the utility of the Static-99R in predicting sexual recidivism among women. Based on a sample of 739 women convicted of sexual offenses in Texas, findings show that the total score was not significantly associated with sexual recidivism. When looking at individual items, other than a history of prior sexual offenses and noncontact sexual offenses, no item of the Static-99R was significantly associated with sexual recidivism among women. Furthermore, only three items (female victims/ solo offender, 4+ sentencing dates, and having not lived with a romantic other for 2+ years) were significantly associated with nonsexual recidivism. These findings indicate that the Static-99R is not suitable to assess risk of recidivism among women convicted of sexual offenses. Keywords female sexual offenders, sexual recidivism, risk assessment, Static-99R, prediction 1 Sam Houston State University, Huntsville, TX, USA 2 Université de Montréal, Québec, Canada 3 Simon Fraser University, Burnaby, British Columbia, Canada Corresponding Author: Ethan Marshall, Department of Criminal Justice and Criminology, George J. Beto Criminal Justice Center, Sam Houston State University, Box 2296, Huntsville, TX 77341, USA. Email: eam034@shsu.edu 940303SAX XX X 10.1177/1079063220940303Sexual AbuseMarshall et al. research-article 2020