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Study the neuromodulation device in the treatment of Major Depressive Disorder and associated symptoms.
In this study we use the Hamilton Depression Rating Scale (HAM-D), the Quality of Life Scale (QQLS), the Rumination Response Scale (RRS), the Brief Irritability Test (BIT), the Generalized Anxiety Disorder 7 Item Scale (GAD 7), and the Future Orientation Scale (FOS). This study was designed to mirror real life situations, and thus patients are not asked to stop their pharmaceutical treatments.
Primary hypothesis for this study is:
o Daily use of the device will decrease depressive symptoms as measured by HAM-D.
Secondary hypotheses for these study are:
Full description
Experimental design 1. This study will be a randomized clinical trial to assess the effects of the device on depression as well as ancillary symptoms of depression. The study will involve 2 phases: Screening/Baseline and Treatment. In the screening phase patients will be assessed by clinical psychiatrists for depression using the Diagnostics and Statistics Manuel 5 (DSM-5) criteria. Baseline rates of depression, quality of life, rumination, irritability, anxiety and future orientation will be gathered prior to treatment. These metrics will be measured by HAM-D, QQLS, RRS, BIT, GAD-7, and FOS respectively. Patients will then be randomized to either the treatment group or the control group. Control group patients will be assigned sham devices by an investigator that is not involved in measurement. On Day 1, patients will be instructed on the use of the Device and will apply the device for the first time under clinic supervision; all other uses of the device will be conducted at home. During the treatment phase, patients will undergo 2 16 minute session of device treatment per day for 8 weeks. Recommended sessions occur once during the day and once before bed. Metrics described above will be measured at the end of week 2 (day 14), week 4 (day 28), week 6 (day 42), and week 8 (day 56). Adverse effects will be assessed at each of these junctures. Patient will return the device on day 56 or at time of discontinuation. Patients who choose to discontinue the study will have their last recorder measures carried forward. In an effort to increase external validity patients will not be asked to change their current treatment plan as outlined by their outpatient psychiatrist. Patients will may continue previously prescribed medication, but no medication changes will occur during the trial.
STATISTICAL METHODS AND DETERMINATION OF SAMPLE SIZE
Statistical and Analytical Plans
a. Before database lock, a statistical analysis plan (SAP) will be authored as a separate document and approved by the investigative team. The SAP will provide a more detailed description of the methods for the analyses described as follows. Any deviations from the planned analyses will be described and justified in the final study report. All study data will be presented in data listings by subject number and time point (where applicable). Summary tables will be presented by time point (where applicable).
Analysis Populations
Disposition of Patients
a. Eligible patients who enter and complete each phase of the clinical study will be enumerated and included for analysis. The number and percentage of patients enrolled, completed, and discontinued from the study will be summarized to identify any non-random patterns of attrition and missing data at the item level.
Planned Analyses
a. Data analyses will proceed by first inspecting the psychometric characteristics of the primary, secondary, and predictive measures collected on each patient within each timepoint and across timepoints. For each measure, means, medians, and standard deviation will be calculated accounting for all available cases and then different assumptions of missingness. Overall, the primary hypotheses are centered on the demonstration of efficacy of the device, relative to baseline. Disposition for all enrolled patients will be summarized, and reasons for discontinuation will be tabulated. Tabular summaries and/or listings will be provided for baseline demographic and clinical characteristics.
Concomitant Medications
a. Concomitant medications taken during administration of the treatment will be summarized and classified by drug class and preferred name using the World Health Organization (WHO) Drug dictionary in the most current version when the study enrollment starts. The version of the WHO Drug dictionary will be noted in the final report.
Analysis of Efficacy Measures
a. The primary endpoints of change from baseline in depression severity as measured by the HAM-D. To compare the change between groups on their change from pre to post treatment, a Repeated Measures Anova will be conducted to test a pre-specified contrast that corresponds to the following null and alternative hypotheses: i. Null: [(Mean-Treatment-Post - Meant-Treatment-Pre) - (Mean-Sham-Post - Meant-Sham-Pre)] = 0 ii. Alternative: [(Mean-Treatment-Post - Meant-Treatment-Pre) - (Mean-Sham-Post - Meant-Sham-Pre)] != 0 b. Secondary outcome measures of quality of life, rumination, future orientation, anxiety and irritability will be studied similarly. Details of additional measures of efficacy and their analysis will be described prospectively, prior to final database lock, in the SAP for this study. From each model, means and 95% confidence intervals (CIs) will be provided for each treatment; and difference in means, one-sided 95% CIs of the difference, and p values (significance value of 0.05) determined.
c. If the primary objective meets statistical significance at 0.05, the secondary objectives will control for type-I error by adjusting p-values using a Hockberg correction. Both the adjusted and unadjusted p-values will be presented.
Analysis of Exposure and Adverse Events
a. Exposure (number of treatment sessions) will be summarized by treatment. Adverse event analyses will be performed using the ITT population. AEs will be coded by primary system organ class (SOC) and preferred term according to the Medical Dictionary for Regulatory Activities (MedDRA). Treatment-emergent AEs (TEAEs), overall and for those considered to be device-related, will be summarized by number and percent of patients in each primary SOC and preferred term by treatment. Summaries will also be presented for relationship to the study device, intensity, seriousness, AEs or Severe Adverse Events (SAEs) leading to discontinuation, deaths and hospitalizations, as well as device-specific AESIs. By-subject listings will be provided.
Determination of Sample Size
Blinding of study a. will provide randomized devices and give study staff a list of device ID numbers to assign in order. Study investigators will have no knowledge of which device is a sham device. will keep blinding information on a separate locked external hard drive that investigators will not have access to. Data attached to each device ID will sent to 's analytics team for statistical analysis.
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Volunteers
Inclusion criteria
Willingly provides written informed consent prior to the conduct of any study-related procedures.
Male or female, 18 to 65 years of age, inclusive. 3. Clinical diagnosis of Major Depressive Disorder. 4. Patient must be in generally good health based upon the results of a medical history, physical examination, and vital signs, at the investigator's discretion.
Willing and able to comply with the study requirements, complete study assessments, and visit the clinic at the scheduled times for the duration of the Treatment Phase.
Able to understand, speak and read English sufficient for the completion of study assessments.
Exclusion criteria
Primary purpose
Allocation
Interventional model
Masking
0 participants in 2 patient groups
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Data sourced from clinicaltrials.gov
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