Publications by authors named "Helena Kraemer"

Loneliness and social isolation coexist, making it difficult to study each separately. The COVID-19 lockdown provided an unprecedented and ethically viable opportunity to study loneliness in seriously ill nursing home residents under uniformly imposed social isolation conditions. To understand the phenomenon of loneliness of the seriously ill nursing home patients under a uniform social isolation condition imposed by the COVID-19 pandemic lockdown.

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The goal of moderator/mediator research in treatment evaluation is to provide guidance to clinicians to choose the best treatment for each patient with a disorder (moderators), and to advise on its optimal protocol or implementation (mediators): personalized/precision medicine. McClure et al. report a systematic review of studies addressing moderators/mediators of the treatment effect of digital interventions for eating disorders, finding no robust moderators or mediators.

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Objective: To examine cognitive effects of neurofeedback (NF) for attention-deficit hyperactivity disorder (ADHD) as a secondary outcome of a randomized clinical trial.

Method: In a double-blind randomized clinical trial (NCT02251743), 133 7-10-year olds with ADHD received either 38 sessions of NF ( = 78) or control treatment ( = 55) and performed an integrated visual and auditory continuous performance test at baseline, mid- and end-treatment. We used the diffusion decision model to decompose integrated visual and auditory continuous performance test performance at each assessment into cognitive components: efficiency of integrating stimulus information (), context sensitivity (), response cautiousness (), response bias (), and nondecision time for perceptual encoding and response execution ().

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Background: Exploring whether cognitive components (identified by baseline cognitive testing and computational modeling) moderate clinical outcome of neurofeedback (NF) for attention-deficit hyperactivity disorder (ADHD).

Method: 142 children (aged 7-10) with ADHD were randomly assigned to either NF ( = 84) or control treatment ( = 58) in a double-blind clinical trial (NCT02251743). The NF group received live, self-controlled downtraining of electroencephalographic theta/beta ratio power.

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Despite considerable progress in pharmacotherapy over the past seven decades, many mental disorders remain insufficiently treated. This situation is in part due to the limited knowledge of the pathophysiology of these disorders and the lack of biological markers to stratify and individualize patient selection, but also to a still restricted number of mechanisms of action being targeted in monotherapy or combination/augmentation treatment, as well as to a variety of challenges threatening the successful development and testing of new drugs. In this paper, we first provide an overview of the most promising drugs with innovative mechanisms of action that are undergoing phase 2 or 3 testing for schizophrenia, bipolar disorder, major depressive disorder, anxiety and trauma-related disorders, substance use disorders, and dementia.

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The most pervasive and damaging myth in clinical research is that the smaller the p-value, the stronger the hypothesis. In reality, the p-value primarily reflects the quality of research design decisions. The most common proposal to avoid misleading conclusions from clinical research requires the appropriate use of effect sizes, but which effect size, used when and how, is an open question.

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Purpose: Microaggressions are subtle verbal or nonverbal everyday behaviors that arise from unconscious bias, covert prejudice, or hostility. They may contribute to the persistent disparities faced by women in medicine. In this study, the authors sought to identify common microaggressions experienced by women faculty in medicine and to determine if specific demographic characteristics affect the reported frequencies of these microaggressions.

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Background: Currently, there are eight meta-analyses that address the question whether psychosocial intervention can prolong survival with widely disparate conclusions. One reason for inconsistent findings may be the methods by which previous meta-analyses were conducted.

Methods: Databases were searched to identify valid randomized controlled trials that compared psychosocial intervention with usual care.

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Little is known about the extent of alignment between hematopoietic stem cell transplant (HSCT) patients and their healthcare proxies with respect to advance care planning (ACP). To determine if a structured three-step process using the letter advance directive (LAD) could (1) allow for the differences in opinion between patient-proxy dyads to surface and (2) help bridge preexisting discordance about specific treatment choices. Blinded to each other, the HSCT patient (LAD-1) and proxy (LAD-2) each completed the LAD (step 1).

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Background: To provide preference-sensitive care, we propose that clinicians might routinely inquire about their patients' bucket-lists and discuss the impact (if any) of their medical treatments on their life goals.

Methods: This cross-sectional, mixed methods online study explores the concept of the bucket list and seeks to identify common bucket list themes. Data were collected in 2015-2016 through an online survey, which was completed by a total of 3056 participants across the United States.

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Background: Head and neck cancers are associated with high rates of depression, which may increase the risk for poorer immediate and long-term outcomes. Here it was hypothesized that greater depressive symptoms would predict earlier mortality, and behavioral (treatment interruption) and biological (treatment response) mediators were examined.

Methods: Patients (n = 134) reported depressive symptomatology at treatment planning.

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Background: Personalized healthcare relies on the identification of factors explaining why individuals respond differently to the same intervention. Analyses identifying such factors, so called predictors and moderators, have their own set of assumptions and limitations which, when violated, can result in misleading claims, and incorrect actions. The aim of this study was to develop a checklist for critically appraising the results of predictor and moderator analyses by combining recommendations from published guidelines and experts in the field.

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Standard MRI methods are often inadequate for identifying mild traumatic brain injury (TBI). Advances in diffusion tensor imaging now provide potential biomarkers of TBI among white matter fascicles (tracts). However, it is still unclear which tracts are most pertinent to TBI diagnosis.

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Antidepressant medications are commonly used to treat depression, but only about 30% of patients reach remission with any single first-step antidepressant. If the first-step treatment fails, response and remission rates at subsequent steps are even more limited. The literature on biomarkers for treatment response is largely based on secondary analyses of studies designed to answer primary questions of efficacy, rather than on a planned systematic evaluation of biomarkers for treatment decision.

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Background: Simpler alternatives to traditional advance directives that are easy to understand and available in multiple formats and can be initiated by patients and families will help facilitate advance care planning. The goal of this study was to compare the acceptability of the letter advance directive (LAD) to the traditional advance directive (TAD) of the state of California.

Design, Setting, Participants, And Measurements: A web-based, randomized controlled trial was conducted, in which the participants were randomized to one of two types of advance directives (ADs): the LAD (intervention) or the TAD (control).

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Background: The Multimodal Treatment Study (MTA) began as a 14-month randomized clinical trial of behavioral and pharmacological treatments of 579 children (7-10 years of age) diagnosed with attention-deficit/hyperactivity disorder (ADHD)-combined type. It transitioned into an observational long-term follow-up of 515 cases consented for continuation and 289 classmates (258 without ADHD) added as a local normative comparison group (LNCG), with assessments 2-16 years after baseline.

Methods: Primary (symptom severity) and secondary (adult height) outcomes in adulthood were specified.

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The purpose of this paper is to a) outline the importance of including patients with clinical comorbidities in Randomized Clinical Trials (RCTs) of psychiatric treatments; and b) to propose a specific approach for best handling, analyzing and interpreting the data on clinical comorbidities in terms of their impact on treatment outcomes. To do this we first define and describe clinical comorbidity and differentiate it from other forms of comorbidity. We then describe the methodological and analytical problems associated with excluding patients with clinically comorbid conditions from RCTs, including the impact on the outcomes of RCTs in psychiatry and the impact on evidence-based clinical decision-making.

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Background: Schizophrenia is linked with early medical comorbidity and mortality. These observations indicate possible "accelerated biological aging" in schizophrenia, although prior findings are mixed, and few such studies have examined the role of gender. One putative marker of biological aging is leukocyte telomere length (LTL), which typically shortens with age.

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Article Synopsis
  • * In a 16-week trial with 150 participants, results showed that CBT-I significantly decreased insomnia severity compared to a control therapy but did not produce a significant difference in depression remission rates between the two groups.
  • * Improvements in insomnia were found to predict eventual remission from depression when using CBT-I, indicating that better sleep may help improve depressive symptoms in patients receiving antidepressant treatment.
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In cancer support groups, choice of therapy model, leadership style, and format can impact patients' experiences and outcomes. Methodologies that illustrate the complexity of patients' group experiences might aid in choosing group style, or testing therapeutic mechanisms. We used this naturalistic study as a beginning step to explore methods for comparing cancer group contexts by first modifying a group-experience survey to be cancer-specific (Group Experience Questionnaire (GEQ)).

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Background: Schizophrenia is one of the most disabling psychiatric disorders with increased morbidity and mortality. Both schizophrenia and oxidative stress have been associated with accelerated aging. Previous studies found increased oxidative stress in individuals with schizophrenia, though only one study measured F2-isoprostanes and did so in urine.

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