Helmus, Thornton, Hanson & Babchishin (2012). Improving the predictive accuracy of Static-99 and Static-2002 with older sex offenders: Revised age weights.
Babchishin, Hanson, Helmus (2011). The RRASOR, Static-99R, and Static-2002R all add incrementally to the prediction of recidivism among sex offenders.
Hanson, Sheahan, & VanZuylen (2013). Static-99 and RRASOR predict recidivism among developmentally delayed sexual offenders: A cumulative meta-analysis.
Thornton, Hanson, & Helmus (2011). Moving beyond the standard model for actuarial assessment for sex offenders. Perspectives: The Quarterly Newsletter of the California Coalition on Sex Offending.
Anderson & Hanson (2010). Static-99: An actuarial tool to assess risk of sexual and violent recidivism among sexual offenders.
Helmus (2009). Re-norming Static-99 recidivism estimates: Exploring base rate variability across sex offender samples.