@article{ref1,
title="Development of Vermont Assessment of Sex Offender Risk-2 (VASOR-2) Reoffense Risk Scale",
journal="Sexual abuse: a journal of research and treatment",
year="2014",
author="McGrath, Robert J. and Lasher, Michael P. and Cumming, Georgia F. and Langton, Calvin M. and Hoke, Stephen E.",
volume="26",
number="3",
pages="271-290",
abstract="The present study aimed to revise the Vermont Assessment of Sex Offender Risk (VASOR) Reoffense Risk Scale, a commonly used sex offender risk assessment tool. The revised tool was named the VASOR-2. Among models tested to revise the scale, a logistic regression model showed the best balance between simplicity of use, goodness of fit, and internal validity (as tested with K-10 cross-validation), and maximized predictive accuracy. Predictive accuracy was tested using four meta-analytically combined data sets drawn from Canada and Vermont (N = 1,581). At 5-year fixed follow-up, the predictive accuracy for sexual recidivism for VASOR-2 (AUC = .74) was similar to the VASOR (AUC = .71). The findings show the VASOR-2 is well calibrated with observed recidivism rates for all but the highest risk sex offenders. The instrument showed good interrater reliability (ICC = .88). An advantage of the VASOR-2 is that it has fewer items and simpler scoring instructions than the VASOR. Norms are presented for a contemporary, nonselected, routine sample of Vermont sex offenders (n = 887).<p /> <p>Language: en</p>",
language="en",
issn="1079-0632",
doi="10.1177/1079063213486936",
url="http://dx.doi.org/10.1177/1079063213486936"
}