Randomization for clinical research: an easy-to-use spreadsheet method

Cluster-Randomized Comparative Effectiveness Trial of Physician-Directed Clinical Decision Support Versus Patient-Directed Education to Promote Appropriate Use of Opioids for Chronic Pain

We compared the effectiveness of physician-directed clinical decision support (CDS) administered via electronic health record versus patient-directed education to promote the appropriate use of opioids by conducting a cluster-randomized trial involving 82 primary care physicians and 951 of their patients with chronic pain. Primary outcomes were satisfaction with patient-physician communication consumer assessment of health care providers and system clinician and group survey (CG-CAHPS) and pain interference patient-reported outcomes measurement information system. Secondary outcomes included physical function (patient-reported outcomes measurement information system), depression (PHQ-9), high-risk opioid prescribing (>90 morphine milligram equivalents per day [≥90 mg morphine equivalent/day]), and co-prescription of opioids and benzodiazepines. We used multi-level regression to compare longitudinal difference-in-difference scores between arms. The odds of achieving the maximum CG-CAHPS score were 2.65 times higher in the patient education versus the CDS arm (P = .044; 95% confidence interval [CI] 1.03-6.80). However, baseline CG-CAHPS scores were dissimilar between arms, making these results challenging to interpret definitively. No difference in pain interference was found between groups (Coef = -0.64, 95% CI -2.66 to 1.38). The patient education arm experienced higher odds of Rx ≥ 90 milligrams morphine equivalent/day (odds ratio = 1.63; P = .010; 95% CI 1.13, 2.36). There were no differences between groups in physical function, depression, or co-prescription of opioids and benzodiazepines. These results suggest that patient-directed education may have the potential to improve satisfaction with patient-physician communication, whereas physician-directed CDS via electronic health records may have greater potential to reduce high-risk opioid dosing. More evidence is needed to ascertain the relative cost-effectiveness between strategies. PERSPECTIVE: This article presents the results of a comparative-effectiveness study of 2 broadly used communication strategies to catalyze dialog between patients and primary care physicians around chronic pain. The results add to the decision-making literature and offer insights about the relative benefits of physician-directed versus patient-directed interventions to promote the appropriate use of opioids.

Brief imaginal exposure exercises for social anxiety disorder: A randomized controlled trial of a self-help momentary intervention app

INTRODUCTION

Emerging technological interventions for psychological disorders are being developed continually. Offering imaginal exposure exercises as a self-help intervention presents the opportunity to acquire foundational skills to address social anxiety. The current study evaluates the feasibility and effectiveness of a novel smartphone application for social interaction anxiety.

METHODS

Participants (n = 82) were adults meeting criteria for social anxiety disorder. They were randomly assigned to imaginal exposure (IE; n = 39) or self-monitoring (n = 43) delivered multiple times daily via a smartphone application for a one-week trial. It was expected that participants using the IE exercises would demonstrate significantly greater declines in social anxiety in addition to increases in self-efficacy and that compliance would serve as a predictor of outcome. Mixed-effects models were utilized.

RESULTS

Participants using IE (vs. self-monitoring) evidenced significantly greater reductions in social anxiety from pre- to post-treatment and at 1-month follow-up. Similarly, IE (vs. self-monitoring) led to significantly greater increases in self-efficacy from pre- to post-treatment and 1-month follow-up. Further, more completed IE exercises predicted significantly greater changes in social anxiety and self-efficacy at subsequent timepoints compared with self-monitoring.

CONCLUSIONS

Findings suggest that a brief IE self-help intervention was effective in targeting social interaction anxiety.

Pilot randomized trial of self-guided virtual reality exposure therapy for social anxiety disorder

BACKGROUND

Virtual reality exposure therapy (VRE) has shown promising efficacy for the treatment of social anxiety disorder (SAD) and related comorbidities. However, most trials conducted to date were therapist-led, and little is known about the efficacy of self-guided VRE. Therefore, this randomized controlled trial (RCT) aimed to determine the efficacy of a self-directed VRE for SAD.

METHOD

Forty-four community-dwelling or undergraduate adults diagnosed with SAD based on the Mini International Neuropsychiatric Interview were randomly assigned to VRE designed to last four sessions or more (n = 26) or waitlist (WL; n = 18). Self-reported SAD severity (Social Phobia Diagnostic Questionnaire and Social Interaction Anxiety Scale), job interview anxiety (Measure of Anxiety in Selection Interviews), trait worry (Penn State Worry Questionnaire), and depression symptoms (Patient Health Questionnaire-9) were administered at baseline, post-treatment, 3-month-follow-up (3MFU), and 6-month-follow-up (6MFU). Piecewise multilevel modeling analyses were conducted to manage clustering in the data.

RESULTS

VRE vs. WL resulted in greater reductions in SAD symptom severity, job interview fear, and trait worry, with moderate-to-large effect sizes (Hedge's g = -0.54 to -1.11) from pre-to-post treatment. Although significant between-group differences did not emerge for change in depression, VRE led to change in depression, whereas waitlist did not. These gains were also maintained at 3MFU and 6MFU. Further, facets of presence increased during the course of VRE (g = 0.36-0.45), whereas cybersickness decreased (g = -0.43).

DISCUSSION

Brief, self-guided VRE might ameliorate SAD and comorbid worry, for young-to-middle-aged adults with SAD. Other theoretical and practical implications were also discussed.

Use of a Personal Sleep Self-Monitoring Device for Sleep Self-Management: A Feasibility Study

The purpose of the current study was to establish feasibility of personal sleep monitoring devices (PSMDs) as an intervention for sleep self-management in older adults. This study followed a mixed-methods experimental design based on the World Health Organization's International Classification of Functioning, Disability, and Health, and the proposed conceptual model of symptom management in a social context. Results showed an acceptable recruitment and retention rate of participants, and acceptability of PSMDs by users. Participants were able to meaningfully interpret PSMD data as evidenced by the numeracy evaluation scores, initiate sleep goals, and share their sleep data and goals with friends or relatives. Findings support extending this research protocol to a larger sample. Future studies for sleep health self-management and personally tailored interventions using personal sleep monitoring are recommended. [Journal of Gerontological Nursing, 47(1), 28-34.].

Conducting a two-stage preference trial: utility and challenges

Treatment preferences reflect individuals' choice of therapy and influence their adherence to treatment and achievement of outcomes. The two-stage partially randomized clinical or preference trial (two-stage PRCT) is an appropriate design for examining the contribution of treatment preferences. It involves a two-stage process for assigning participants to treatments, which is useful to dismantle the effects of the treatments from those of treatment preferences. In this paper, we explain the role of treatment preferences in intervention evaluation research, describe the protocol for implementing the two-stage PRCT, and discuss issues in its application. The issues are encountered in the selection of treatments, assignment of participants and assessment of treatment preferences. Lastly, we propose ways to address the issues.