Lisanne Warmerdam

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Activity scheduling is a behavioral treatment of depression in which patients learn to monitor their mood and daily activities, and how to increase the number of pleasant activities and to increase positive interactions with their environment. We conducted a meta-analysis of randomized effect studies of activity scheduling. Sixteen studies with 780 subjects(More)
BACKGROUND Many depressed people do not receive help for their symptoms, and there are various barriers that impede help-seeking. The Internet may offer interesting alternatives for reaching and helping people with depression. Depression can be treated effectively with Internet-based cognitive behavioral therapy (CBT), but a short intervention based on(More)
BACKGROUND A large number of randomized controlled studies have clearly demonstrated that psychological interventions are effective in the treatment of depression. The number of studies in this area is increasing rapidly. In this paper, we present a database of controlled and comparative outcome studies on psychological treatments of depression, based on a(More)
BACKGROUND Although indicated prevention of depression is available for about 80% of the Dutch population at little or no cost, only a small proportion of those with subthreshold depression make use of these services. METHODS A narrative review is conducted of the Dutch preventive services in mental health care, also addressing the problem of low(More)
BACKGROUND A large number of studies have shown that psychological treatments have significant effects on depression. Although several studies have examined the relative effects of psychological and combined treatments, this has not been studied satisfactorily in recent statistical meta-analyses. METHOD We conducted a meta-analysis of randomized studies(More)
PURPOSE In the past decades, the effects of problem-solving therapy (PST) for depression have been examined in several randomized controlled studies. However, until now no meta-analysis has tried to integrate the results of these studies. METHODS We conducted a systematic literature search and identified 13 randomized studies examining the effects of PST,(More)
Although many meta-analyses have shown that psychological therapies are effective in the treatment of depression, no comprehensive metaregression analysis has been conducted to examine which characteristics of the intervention, target population, and study design are related to the effects. The authors conducted such a metaregression analysis with 83(More)
In this paper, the authors describe a method of accurately detecting human activity using a smartphone accelerometer paired with a dedicated chest sensor. The design, implementation, testing and validation of a custom mobility classifier are also presented. Offline analysis was carried out to compare this custom classifier to de-facto machine learning(More)
BACKGROUND The effectiveness of Internet-based treatments for depression has been demonstrated; their cost-effectiveness, however, has been less well researched. OBJECTIVE Evaluating the relative cost-utility and cost-effectiveness of (1) Internet-based cognitive behavioral therapy, (2) Internet-based problem-solving therapy, and (3) a waiting list for(More)
Background and Objectives: It is well-established that psychological interventions are effective in the treatment of depression. However, it is not yet clear what the optima format is in which psychological treatments should be delivered. Although several studies have examined whether individual and group treatments are equally effective in the treatment of(More)