Gerard M. Schippers

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AIMS Self-help interventions for adult problem drinkers in the general population have proved effective. The question is whether this also holds for self-help interventions delivered over the internet. DESIGN We conducted a pragmatic randomized trial with two parallel groups, using block randomization stratified for gender and with follow-up at 6 months.(More)
AIMS To present and evaluate a measurement tool for assessing characteristics of people with drug and/or alcohol problems for triage and evaluation in treatment. Measurements in the Addictions for Triage and Evaluation (MATE) is composed of 10 modules, selected on the basis of a detailed set of specifications. Conceptually, the MATE was constructed(More)
OBJECTIVE Problematic alcohol use is the third leading contributor to the global burden of disease, partly because the majority of problem drinkers are not receiving treatment. Internet-based alcohol interventions attract an otherwise untreated population, but their effectiveness has not yet been established. The current study examined the effectiveness of(More)
OBJECTIVE The examination of the prediction of grams of ice cream eaten by preload, restraint, susceptibility toward overeating, and interaction terms. METHOD A milkshake-ice cream study on 200 females using the Restraint Scale (RS) and the restraint and disinhibition scales from the Three-Factor Eating Questionnaire (TFEQ) and the Dutch Eating Behavior(More)
CONTEXT The effectiveness of personalized-feedback interventions to reduce problem drinking has been evaluated in several RCTs and systematic reviews. A meta-analysis was performed to examine the overall effectiveness of brief, single-session personalized-feedback interventions without therapeutic guidance. EVIDENCE ACQUISITION The selection and analyses(More)
The aim of the present study was to evaluate the psychometric properties of the Dutch version of the Readiness to Change Questionnaire (RCQ-D). The subjects were 246 excessive drinkers admitted to an addiction treatment centre and 54 offenders convicted of an alcohol-related crime in The Netherlands. The factor structure of the RCQ-D for the two samples(More)
The purpose of this study was to establish the predictive validity of guidelines for allocating patients to outpatient or inpatient treatment for an alcohol-use disorder. It was hypothesized that patients who were matched to the recommended level of care would have (a) better outcomes than patients treated at a less intensive level of care, and (b) outcomes(More)
AIMS To examine the feasibility of implementing evidence-based guidelines for patient-treatment-matching to levels of care in two Dutch substance abuse treatment centres. DESIGN Multi-centre observational follow-up study. SETTING Two large substance abuse treatment centres (SATCs). PARTICIPANTS All 4394 referrals to the two SATCs in 2003. (More)
BACKGROUND Web-based self-help interventions for problem drinking are coming of age. They have shown promising results in terms of cost-effectiveness, and they offer opportunities to reach out on a broad scale to problem drinkers. The question now is whether certain groups of problem drinkers benefit more from such Web-based interventions than others. (More)
The purpose of this study was to assess the predictive validity of guidelines for allocating outpatients with an alcohol-use disorder to different levels of care in routine alcohol outpatient treatment facilities. It was hypothesized that patients matched to the recommended level of care would have (a) better outcomes than patients treated at a less(More)