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Propensity score estimation with boosted regression for evaluating causal effects in observational studies.
Propensity score weights estimated using boosting eliminate most pretreatment group differences and substantially alter the apparent relative effects of adolescent substance abuse treatment. Expand
Influence of emotional engagement and habituation on exposure therapy for PTSD.
This study examined 2 process variables, emotional engagement and habituation, and outcome of exposure therapy for posttraumatic stress disorder, and three distinct groups of clients with different patterns of distress were found: high initial engagement and gradual habituation between sessions, high initial Engagement without habituated, and moderate initial engagement without habituation. Expand
Toolkit for Weighting and Analysis of Nonequivalent Groups: A tutorial for the twang package
The framework of the twang package is flexible enough to allow the user to use propensity score estimates from other methods and to assess the usefulness of those estimates for ensuring equivalence (or “balance”) in the pretreatment covariate distributions of treatment and control groups using tools from the package. Expand
Estimating Terrorism Risk
Abstract : The Department of Homeland Security (DHS) is responsible for protecting the United States from terrorism through prevention, preparedness, and response. In part, this goal is achievedExpand
Sexual Assault and Sexual Harassment in the U.S. Military: Volume 2. Estimates for Department of Defense Service Members from the 2014 RAND Military Workplace Study
Estimates of the number of service members who experienced sexual assault, sexual harassment, or gender discrimination in the past year are included, as well as detailed information about the characteristics of those incidents, decisions to report, and experiences with response and legal systems for both male and female service members. Expand
The decade of drug treatment court research conducted at RAND is explored, starting with the experimental field evaluation of Maricopa's drug testing and treatment options to the most current 14-site national evaluation of courts funded in 1995–96 by the Drug Court Program Office. Expand
Drug Courts: A Conceptual Framework
A conceptual framework of five drug court dimensions, each scorable on a range from low to high, lend themselves to a systematic set of hypotheses regarding the effects of structure and process on drug court outcomes and propose quantitative and qualitative methods for identifying such effects. Expand
Reassessing the marijuana gateway effect.
The results demonstrate that the phenomena used to motivate belief in such an effect are consistent with an alternative simple, plausible common-factor model, which has implications for evaluating marijuana control policies that differ significantly from those supported by the gateway model. Expand
Effectiveness of community-based treatment for substance-abusing adolescents: 12-month outcomes of youths entering phoenix academy or alternative probation dispositions.
Repeated measures analyses of substance use, psychological functioning, and crime outcomes collected 3, 6, and 12 months after the baseline interview demonstrated that Phoenix Academy treatment is associated with superior substance use and psychological functioning outcomes over the period of observation. Expand
Reinforcing operants other than abstinence in drug abuse treatment: an effective alternative for reducing drug use.
Urinalysis results indicate that the TP intervention was significantly more effective in reducing illicit drug use than either the UA or STD interventions. Expand