Skip to content

Low Field Magnetic Stimulation in Mood Disorders Using the LFMS Device

Low Field Magnetic Stimulation in Mood Disorders Using the LFMS Device

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00578383
Acronym
LFMS
Enrollment
107
Registered
2007-12-21
Start date
2007-11-30
Completion date
2013-03-31
Last updated
2016-05-16

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Bipolar Depression, Depression, Major Depressive Disorder

Keywords

Depression, Major depression, Bipolar Disorder, Bipolar depression, LFMS, low field magnetic stimulation, mood disorders, affective disorders

Brief summary

This study is designed to test whether low-field magnetic stimulation (LFMS) can relieve some of the symptoms of depression in bipolar disorder or major depression.

Detailed description

This study involves a screening visit with the study physician and a treatment visit. Participants will be asked to complete several questionnaires about their mood during both visits. The treatment visit will involve use of the LFMS device. Participants will place the top of their head inside the device for approximately 20 minutes. Participants will receive either the actual treatment or a sham treatment and will not know which they receive. This device produces weak electromagnetic fields. There is no discomfort or even sensation caused by the device. The device has been declared to be a non-significant risk device by the FDA, and there are no known risks associated with its use.

Interventions

The LFMS Device is an electromagnetic coil situated on a cylinder with an inside diameter of 13.2 inches. It produces weak electromagnetic fields at a frequency of about 1 kHz; the magnetic fields are less than 30 Gauss and the electric fields are up to 1.43 V/m. Subjects will receive one 20 minute treatment.

Sponsors

Stanley Medical Research Institute
CollaboratorOTHER
Mclean Hospital
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 70 Years
Healthy volunteers
No

Inclusion criteria

* Diagnosis of Major Depressive Disorder or Bipolar Disorder; must be currently depressed * May be medicated or unmedicated

Exclusion criteria

* Contraindication for MRI due to metal in eyes/head * Claustrophobia. * Inability to lie flat. * History of brain injury. * Pregnant * Current drug use/abuse/dependence * History of polysubstance use

Design outcomes

Primary

MeasureTime frameDescription
Mean Change in Hamilton Depression Rating Scale (HAM-D) (17 Item) in Subjects With Bipolar DepressionOnce just before and once just after treatmentA multiple choice questionnaire used to rate depression severity. Mean change from pretreatment score. 17 items reflecting depression symptoms are scored on scale of severity; 9 items are scored 0 = Absent 1 = Trivial 2 = Mild 3 = Moderate 4 = Severe 8 items are scored 0 = Absent 1 = Mild 2 = Severe. Items are summed; minimum score is 0, maximum score is 52. Higher scores represent more severe depression.
Mean Change in Hamilton Depression Depression Rating Scale (HAM-D) (17 Item) in Subjects With Major Depressive DisorderOnce just before and once just after treatmentA multiple choice questionnaire used to rate depression severity. Mean change from pretreatment score. 17 items reflecting depression symptoms are scored on scale of severity; 9 items are scored 0 = Absent 1 = Trivial 2 = Mild 3 = Moderate 4 = Severe 8 items are scored 0 = Absent 1 = Mild 2 = Severe. Items are summed; minimum score is 0, maximum score is 52. Higher scores represent more severe depression.
Visual Analog Scale (VAS) in Subjects With Bipolar DepressionOnce just before and once just after treatmentEleven point Likert scales indicating immediate depression state. Mean change from pretreatment score. Participant marks an 'X' on a numbered line anchored by 0 = no depression and 10 = most depressed ever been.
Visual Analog Scale (VAS) in Subjects With Major Depressive DisorderOnce just before and once just after treatmentEleven point Likert scales indicating immediate depression state. Mean change from pretreatment score. Participant marks an 'X' on a numbered line anchored by 0 = no depression and 10 = most depressed ever been.

Secondary

MeasureTime frameDescription
Positive and Negative Affect Schedule (PANAS) Positive Score in Subjects With Bipolar Depression.Once just before and once just after treatment20 item list of words that describe different feelings and emotions with positive and negative valences (10 each), which the subject scores on a 1-5 scale: 1 = very slightly or not at all 2 = a little 3 = moderate 4 = quite a bit 5 = extremely. Positive and Negative scores are calculated and reported separately and range from 10-50. Higher positive score reflects stronger positive affect and higher negative score reflects stronger negative affect.
Positive and Negative Affect Schedule (PANAS) Positive Score in Subjects With Major Depressive DisorderOnce just before and once just after treatment20 item list of words that describe different feelings and emotions with positive and negative valences (10 each), which the subject scores on a 1-5 scale: 1 = very slightly or not at all 2 = a little 3 = moderate 4 = quite a bit 5 = extremely. Positive and Negative scores are calculated and reported separately and range from 10-50. Higher positive score reflects stronger positive affect and higher negative score reflects stronger negative affect.
Mean Change in Hamilton Depression Rating Scale (HAM-D) (17 Item): Combined Diagnostic Groups.Once just before and once just after treatmentA multiple choice questionnaire used to rate depression severity. Mean change from pretreatment score. 17 items reflecting depression symptoms are scored on scale of severity; 9 items are scored 0 = Absent 1 = Trivial 2 = Mild 3 = Moderate 4 = Severe 8 items are scored 0 = Absent 1 = Mild 2 = Severe. Items are summed; minimum score is 0, maximum score is 52. Higher scores represent more severe depression.
Positive and Negative Affect Schedule (PANAS) Negative Score in Subjects With Major Depressive Disorderonce pre and once post LFMS treatment20 item list of words that describe different feelings and emotions with positive and negative valences (10 each), which the subject scores on a 1-5 scale: 1 = very slightly or not at all 2 = a little 3 = moderate 4 = quite a bit 5 = extremely. Positive and Negative scores are calculated and reported separately and range from 10-50. Higher positive score reflects stronger positive affect and higher negative score reflects stronger negative affect.
Positive and Negative Affect Schedule (PANAS) Negative Score in Subjects With Bipolar Depressiononce pre and once post LFMS treatment20 item list of words that describe different feelings and emotions with positive and negative valences (10 each), which the subject scores on a 1-5 scale: 1 = very slightly or not at all 2 = a little 3 = moderate 4 = quite a bit 5 = extremely. Positive and Negative scores are calculated and reported separately and range from 10-50. Higher positive score reflects stronger positive affect and higher negative score reflects stronger negative affect.
Visual Analog Scale (VAS): Combined Diagnostic Groups.Once just before and once just after treatmentEleven point Likert scales indicating immediate depression state. Mean change from pretreatment score. Participant marks an 'X' on a numbered line anchored by 0 = no depression and 10 = most depressed ever been.
Positive and Negative Affect Schedule (PANAS) Positive Score: Combined Diagnostic Group.Once just before and once just after treatment20 item list of words that describe different feelings and emotions with positive and negative valences (10 each), which the subject scores on a 1-5 scale: 1 = very slightly or not at all 2 = a little 3 = moderate 4 = quite a bit 5 = extremely. Positive and Negative scores are calculated and reported separately and range from 10-50. Higher positive score reflects stronger positive affect and higher negative score reflects stronger negative affect.
Positive and Negative Affect Schedule (PANAS) Negative Score: Combined Diagnostic Group.once pre and once post LFMS treatment20 item list of words that describe different feelings and emotions with positive and negative valences (10 each), which the subject scores on a 1-5 scale: 1 = very slightly or not at all 2 = a little 3 = moderate 4 = quite a bit 5 = extremely. Positive and Negative scores are calculated and reported separately and range from 10-50. Higher positive score reflects stronger positive affect and higher negative score reflects stronger negative affect.

Countries

United States

Participant flow

Recruitment details

Subjects were recruited from March 2008 though February 2011. They were recruited through flyers distributed around McLean Hospital (Belmont, MA), referral by clinic doctors and direct recruitment on the hospital's units.

Pre-assignment details

Enrolled participants are excluded from statistical results if they had baseline Hamilton Depression Rating scores under 17 or co-morbid disorders.

Participants by arm

ArmCount
Bipolar Disorder Active LFMS Treatment
Subjects with bipolar depression receiving active treatment with the Low Field Magnetic Stimulation Device.
37
Bipolar Disorder Sham LFMS Treatment
Subjects with bipolar depression receiving sham treatment with the Low Field Magnetic Stimulation Device. The sham treatment is identical to the active treatment, with the exception that subjects to not receive the active stimulation.
36
Major Depressive Disorder Active LFMS Treatment
Subjects with major depression receiving active treatment with the Low Field Magnetic Stimulation Device.
19
Major Depressive Disorder Sham LFMS Treatment
Subjects with major depression receiving sham treatment with the Low Field Magnetic Stimulation Device. The sham treatment is identical to the active treatment, with the exception that subjects to not receive the active stimulation.
15
Total107

Baseline characteristics

CharacteristicBipolar Disorder Sham LFMS TreatmentMajor Depressive Disorder Active LFMS TreatmentBipolar Disorder Active LFMS TreatmentMajor Depressive Disorder Sham LFMS TreatmentTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
0 Participants0 Participants1 Participants0 Participants1 Participants
Age, Categorical
Between 18 and 65 years
36 Participants19 Participants36 Participants15 Participants106 Participants
Age, Continuous42.2 years
STANDARD_DEVIATION 12.2
43.1 years
STANDARD_DEVIATION 15.5
42.6 years
STANDARD_DEVIATION 13
43.5 years
STANDARD_DEVIATION 14.9
42.9 years
STANDARD_DEVIATION 13.3
Region of Enrollment
United States
36 participants19 participants37 participants15 participants107 participants
Sex: Female, Male
Female
15 Participants12 Participants25 Participants8 Participants60 Participants
Sex: Female, Male
Male
21 Participants7 Participants12 Participants7 Participants47 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —— / —
other
Total, other adverse events
0 / 372 / 360 / 190 / 15
serious
Total, serious adverse events
0 / 370 / 360 / 190 / 15

Outcome results

Primary

Mean Change in Hamilton Depression Depression Rating Scale (HAM-D) (17 Item) in Subjects With Major Depressive Disorder

A multiple choice questionnaire used to rate depression severity. Mean change from pretreatment score. 17 items reflecting depression symptoms are scored on scale of severity; 9 items are scored 0 = Absent 1 = Trivial 2 = Mild 3 = Moderate 4 = Severe 8 items are scored 0 = Absent 1 = Mild 2 = Severe. Items are summed; minimum score is 0, maximum score is 52. Higher scores represent more severe depression.

Time frame: Once just before and once just after treatment

Population: Qualifying subjects who completed the the study with qualifying HAM-D scores and complete data.

ArmMeasureValue (MEAN)Dispersion
Combined Group Active LFMS TreatmentMean Change in Hamilton Depression Depression Rating Scale (HAM-D) (17 Item) in Subjects With Major Depressive Disorder-7.19 units on a scaleStandard Error 1.44
Combined Group Sham LFMS TreatmentMean Change in Hamilton Depression Depression Rating Scale (HAM-D) (17 Item) in Subjects With Major Depressive Disorder-4.02 units on a scaleStandard Error 1.54
Comparison: Active LFMS treatment would reduce depression immediately after treatment in subjects with major depressive disorder as assessed by the 17-item Hamilton Depression Rating Scale.p-value: 0.1995% CI: [-3.3, 9.6]Regression, Linear
Primary

Mean Change in Hamilton Depression Rating Scale (HAM-D) (17 Item) in Subjects With Bipolar Depression

A multiple choice questionnaire used to rate depression severity. Mean change from pretreatment score. 17 items reflecting depression symptoms are scored on scale of severity; 9 items are scored 0 = Absent 1 = Trivial 2 = Mild 3 = Moderate 4 = Severe 8 items are scored 0 = Absent 1 = Mild 2 = Severe. Items are summed; minimum score is 0, maximum score is 52. Higher scores represent more severe depression.

Time frame: Once just before and once just after treatment

Population: Qualifying subjects who completed the the study with qualifying HAM-D scores and complete data.

ArmMeasureValue (MEAN)Dispersion
Combined Group Active LFMS TreatmentMean Change in Hamilton Depression Rating Scale (HAM-D) (17 Item) in Subjects With Bipolar Depression-8.3 units on a scaleStandard Error 1
Combined Group Sham LFMS TreatmentMean Change in Hamilton Depression Rating Scale (HAM-D) (17 Item) in Subjects With Bipolar Depression-5.79 units on a scaleStandard Error 1.07
Comparison: Active LFMS treatment would reduce depression immediately after treatment in subjects with bipolar depression as assessed by the 17-item Hamilton Depression Rating Scale.p-value: 0.0995% CI: [-1.2, 6.2]Regression, Linear
Primary

Visual Analog Scale (VAS) in Subjects With Bipolar Depression

Eleven point Likert scales indicating immediate depression state. Mean change from pretreatment score. Participant marks an 'X' on a numbered line anchored by 0 = no depression and 10 = most depressed ever been.

Time frame: Once just before and once just after treatment

Population: Qualifying subjects who completed the the study with qualifying HAM-D scores and complete data.

ArmMeasureValue (MEAN)Dispersion
Combined Group Active LFMS TreatmentVisual Analog Scale (VAS) in Subjects With Bipolar Depression-1.18 units on a scaleStandard Error 0.37
Combined Group Sham LFMS TreatmentVisual Analog Scale (VAS) in Subjects With Bipolar Depression-1.05 units on a scaleStandard Error 0.35
Comparison: Active LFMS treatment would reduce depression immediately after treatment in subjects with bipolar depression as assessed by a visual analog scale.p-value: 0.1595% CI: [-0.6, 2.1]Regression, Linear
Primary

Visual Analog Scale (VAS) in Subjects With Major Depressive Disorder

Eleven point Likert scales indicating immediate depression state. Mean change from pretreatment score. Participant marks an 'X' on a numbered line anchored by 0 = no depression and 10 = most depressed ever been.

Time frame: Once just before and once just after treatment

Population: Qualifying subjects who completed the the study with qualifying HAM-D scores and complete data.

ArmMeasureValue (MEAN)Dispersion
Combined Group Active LFMS TreatmentVisual Analog Scale (VAS) in Subjects With Major Depressive Disorder-1.33 units on a scaleStandard Error 0.53
Combined Group Sham LFMS TreatmentVisual Analog Scale (VAS) in Subjects With Major Depressive Disorder0.25 units on a scaleStandard Error 0.25
Comparison: Active LFMS treatment would reduce depression immediately after treatment in subjects with major depressive disorder as assessed by a visual analog scale.p-value: 0.0495% CI: [-0.4, 3.6]Regression, Linear
Secondary

Mean Change in Hamilton Depression Rating Scale (HAM-D) (17 Item): Combined Diagnostic Groups.

A multiple choice questionnaire used to rate depression severity. Mean change from pretreatment score. 17 items reflecting depression symptoms are scored on scale of severity; 9 items are scored 0 = Absent 1 = Trivial 2 = Mild 3 = Moderate 4 = Severe 8 items are scored 0 = Absent 1 = Mild 2 = Severe. Items are summed; minimum score is 0, maximum score is 52. Higher scores represent more severe depression.

Time frame: Once just before and once just after treatment

Population: Qualifying subjects who completed the the study with qualifying HAM-D scores and complete data.

ArmMeasureValue (MEAN)Dispersion
Combined Group Active LFMS TreatmentMean Change in Hamilton Depression Rating Scale (HAM-D) (17 Item): Combined Diagnostic Groups.-8.13 units on a scaleStandard Error 0.87
Combined Group Sham LFMS TreatmentMean Change in Hamilton Depression Rating Scale (HAM-D) (17 Item): Combined Diagnostic Groups.-5.02 units on a scaleStandard Error 0.78
Comparison: Active LFMS treatment would reduce depression immediately after treatment in subjects with bipolar depression and those with major depressive disorder as assessed by the 17-item Hamilton Depression Rating Scale.p-value: 0.00995% CI: [0.5, 5.8]Regression, Linear
Secondary

Positive and Negative Affect Schedule (PANAS) Negative Score: Combined Diagnostic Group.

20 item list of words that describe different feelings and emotions with positive and negative valences (10 each), which the subject scores on a 1-5 scale: 1 = very slightly or not at all 2 = a little 3 = moderate 4 = quite a bit 5 = extremely. Positive and Negative scores are calculated and reported separately and range from 10-50. Higher positive score reflects stronger positive affect and higher negative score reflects stronger negative affect.

Time frame: once pre and once post LFMS treatment

Population: Qualifying subjects who completed the the study with qualifying HAM-D scores.

ArmMeasureValue (MEAN)Dispersion
Combined Group Active LFMS TreatmentPositive and Negative Affect Schedule (PANAS) Negative Score: Combined Diagnostic Group.-7.00 units on a scaleStandard Error 1.02
Combined Group Sham LFMS TreatmentPositive and Negative Affect Schedule (PANAS) Negative Score: Combined Diagnostic Group.-5.00 units on a scaleStandard Error 0.91
Comparison: Active LFMS treatment would reduce depression immediately after treatment in subjects with bipolar depression and those with major depressive disorder as assessed by the PANAS (negative scale)p-value: 0.1595% CI: [-1.1, 5.1]Regression, Linear
Secondary

Positive and Negative Affect Schedule (PANAS) Negative Score in Subjects With Bipolar Depression

20 item list of words that describe different feelings and emotions with positive and negative valences (10 each), which the subject scores on a 1-5 scale: 1 = very slightly or not at all 2 = a little 3 = moderate 4 = quite a bit 5 = extremely. Positive and Negative scores are calculated and reported separately and range from 10-50. Higher positive score reflects stronger positive affect and higher negative score reflects stronger negative affect.

Time frame: once pre and once post LFMS treatment

Population: Qualifying subjects who completed the the study with qualifying HAM-D scores and complete data.

ArmMeasureValue (MEAN)Dispersion
Combined Group Active LFMS TreatmentPositive and Negative Affect Schedule (PANAS) Negative Score in Subjects With Bipolar Depression-7.66 units on a scaleStandard Error 1.45
Combined Group Sham LFMS TreatmentPositive and Negative Affect Schedule (PANAS) Negative Score in Subjects With Bipolar Depression-6.31 units on a scaleStandard Error 1.39
Comparison: Active LFMS treatment would reduce depression immediately after treatment in subjects with bipolar depression as assessed by the PANAS (negative scale)p-value: 0.5295% CI: [-4.1, 6.8]Regression, Linear
Secondary

Positive and Negative Affect Schedule (PANAS) Negative Score in Subjects With Major Depressive Disorder

20 item list of words that describe different feelings and emotions with positive and negative valences (10 each), which the subject scores on a 1-5 scale: 1 = very slightly or not at all 2 = a little 3 = moderate 4 = quite a bit 5 = extremely. Positive and Negative scores are calculated and reported separately and range from 10-50. Higher positive score reflects stronger positive affect and higher negative score reflects stronger negative affect.

Time frame: once pre and once post LFMS treatment

Population: Qualifying subjects who completed the the study with qualifying HAM-D scores and complete data.

ArmMeasureValue (MEAN)Dispersion
Combined Group Active LFMS TreatmentPositive and Negative Affect Schedule (PANAS) Negative Score in Subjects With Major Depressive Disorder-5.28 units on a scaleStandard Error 1.1
Combined Group Sham LFMS TreatmentPositive and Negative Affect Schedule (PANAS) Negative Score in Subjects With Major Depressive Disorder-3.04 units on a scaleStandard Error 0.63
Comparison: Active LFMS treatment would reduce depression immediately after treatment in subjects with major depressive disorder as assessed by the PANAS (negative scale)p-value: 0.195% CI: [-1.3, 5.8]Regression, Linear
Secondary

Positive and Negative Affect Schedule (PANAS) Positive Score: Combined Diagnostic Group.

20 item list of words that describe different feelings and emotions with positive and negative valences (10 each), which the subject scores on a 1-5 scale: 1 = very slightly or not at all 2 = a little 3 = moderate 4 = quite a bit 5 = extremely. Positive and Negative scores are calculated and reported separately and range from 10-50. Higher positive score reflects stronger positive affect and higher negative score reflects stronger negative affect.

Time frame: Once just before and once just after treatment

Population: Qualifying subjects who completed the the study with qualifying HAM-D scores.

ArmMeasureValue (MEAN)Dispersion
Combined Group Active LFMS TreatmentPositive and Negative Affect Schedule (PANAS) Positive Score: Combined Diagnostic Group.3.16 units on a scaleStandard Error 0.93
Combined Group Sham LFMS TreatmentPositive and Negative Affect Schedule (PANAS) Positive Score: Combined Diagnostic Group.-0.94 units on a scaleStandard Error 0.79
Comparison: Active LFMS treatment would reduce depression immediately after treatment in subjects with bipolar depression and those with major depressive disorder as assessed by the PANAS (POSITIVE SCALE).p-value: 0.00195% CI: [1.3, 6.9]Regression, Linear
Secondary

Positive and Negative Affect Schedule (PANAS) Positive Score in Subjects With Bipolar Depression.

20 item list of words that describe different feelings and emotions with positive and negative valences (10 each), which the subject scores on a 1-5 scale: 1 = very slightly or not at all 2 = a little 3 = moderate 4 = quite a bit 5 = extremely. Positive and Negative scores are calculated and reported separately and range from 10-50. Higher positive score reflects stronger positive affect and higher negative score reflects stronger negative affect.

Time frame: Once just before and once just after treatment

Population: Qualifying subjects who completed the the study with qualifying HAM-D scores and complete data.

ArmMeasureValue (MEAN)Dispersion
Combined Group Active LFMS TreatmentPositive and Negative Affect Schedule (PANAS) Positive Score in Subjects With Bipolar Depression.4.18 units on a scaleStandard Error 1.37
Combined Group Sham LFMS TreatmentPositive and Negative Affect Schedule (PANAS) Positive Score in Subjects With Bipolar Depression.-0.79 units on a scaleStandard Error 0.93
Comparison: Active LFMS treatment would reduce depression immediately after treatment in subjects with bipolar depression as assessed by the PANAS (positive scale)p-value: 0.00495% CI: [0.8, 9.2]Regression, Linear
Secondary

Positive and Negative Affect Schedule (PANAS) Positive Score in Subjects With Major Depressive Disorder

20 item list of words that describe different feelings and emotions with positive and negative valences (10 each), which the subject scores on a 1-5 scale: 1 = very slightly or not at all 2 = a little 3 = moderate 4 = quite a bit 5 = extremely. Positive and Negative scores are calculated and reported separately and range from 10-50. Higher positive score reflects stronger positive affect and higher negative score reflects stronger negative affect.

Time frame: Once just before and once just after treatment

Population: Qualifying subjects who completed the the study with qualifying HAM-D scores and complete data.

ArmMeasureValue (MEAN)Dispersion
Combined Group Active LFMS TreatmentPositive and Negative Affect Schedule (PANAS) Positive Score in Subjects With Major Depressive Disorder1.05 units on a scaleStandard Error 1.07
Combined Group Sham LFMS TreatmentPositive and Negative Affect Schedule (PANAS) Positive Score in Subjects With Major Depressive Disorder-0.63 units on a scaleStandard Error 1.11
Comparison: Active LFMS treatment would reduce depression immediately after treatment in subjects with major depressive disorder as assessed by the PANAS (positive scale)p-value: 0.395% CI: [1.3, 5.8]Regression, Linear
Secondary

Visual Analog Scale (VAS): Combined Diagnostic Groups.

Eleven point Likert scales indicating immediate depression state. Mean change from pretreatment score. Participant marks an 'X' on a numbered line anchored by 0 = no depression and 10 = most depressed ever been.

Time frame: Once just before and once just after treatment

Population: Qualifying subjects who completed the the study with qualifying HAM-D scores.

ArmMeasureValue (MEAN)Dispersion
Combined Group Active LFMS TreatmentVisual Analog Scale (VAS): Combined Diagnostic Groups.-1.66 units on a scaleStandard Error 0.29
Combined Group Sham LFMS TreatmentVisual Analog Scale (VAS): Combined Diagnostic Groups.-0.60 units on a scaleStandard Error 0.23
Comparison: Active LFMS treatment would reduce depression immediately after treatment in subjects with bipolar depression and those with major depressive disorder as assessed by a visual analog scale.p-value: 0.00695% CI: [0.2, 1.9]Regression, Linear

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026