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Early termination due to inability to meet enrollment for >350lb weight class
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This study is being conducted to examine the performance of three common DXA machines (1) Lunar iDXA, (2) Lunar Prodigy and (3) Hologic Discovery A in measuring bone density and body fat.
For this study, two specific groups of volunteers will be recruited. In one group, the scan will measure bone density and in the other group the scan will measure fat. The groups will be broken into weight groups to determine which of the scanners the subject will be scanned on. Subjects will have the option to participate in either one or both groups.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Skeletal | Experimental | Recruitment for each cohort will include approximately equal male/female split (no gender bias). Depending on the weight category, for each cohort, a minimum of 30 adult subjects will be measured on two of three systems [Lunar Prodigy (GEHC), Lunar iDXA (GEHC) and Discovery A (Hologic)], and 60 will be measured on all three systems [Lunar Prodigy (GEHC), Lunar iDXA (GEHC) and Discovery A (Hologic)],(total of evaluable 90 subjects). ** Subjects can enroll in both Skeletal and Body Composition cohorts. Analysis will be performed within each cohort.** |
|
| Body Composition | Experimental | Recruitment for each cohort will include approximately equal male/female split (no gender bias). Depending on the weight category, for each cohort, a minimum of 30 adult subjects will be measured on two of the three systems [Lunar Prodigy (GEHC), Lunar iDXA (GEHC) and Discovery A (Hologic)], and 60 will be measured on all three systems [Lunar Prodigy (GEHC), Lunar iDXA (GEHC) and Discovery A (Hologic)], (total of evaluable 90 subjects). ** Subjects can enroll in both Skeletal and Body Composition cohorts. Analysis will be performed within each cohort.** |
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| Skeletal & Body Composition | Experimental | "Skeletal and Body Composition" was not a cohort that was actively recruited to, it is a cohort for reporting purposes. Subjects will be measured on two of three systems [Lunar Prodigy (GEHC), Lunar iDXA (GEHC) and Discovery A (Hologic)]Subjects were able to consent and enroll to both Skeletal and Body Composition cohorts and these subjects will be counted for under this joint cohort. |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Lunar Prodigy (GEHC) | Device | Lunar Prodigy (GEHC) used to obtain Skeletal, and/or Body Composition measurements |
|
| Measure | Description | Time Frame |
|---|---|---|
| Short Term Precision Comparison Across Three DXA Devices | BMD precision will be reported across three DXA devices in major skeletal and body composition sites. The short-term precision was calculated as RMS-SD (root mean square standard deviation) over the mean for each cohort. The skeletal cohort will not have short-term precision value for body composition indexes due to the different region of measurement. The same will apply to the body composition cohort. As the result, the "Skeletal & Body Composition" cohort identified in participant flow and overall study summary will not have an analysis provided. | Less than 6 months |
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Inclusion Criteria:
Men and women > 20 years old
Willing to provide consent
Falls into one of three weight categories, with minimum 30 subjects per category.
Participate in only one weight category in either skeletal or body composition cohort, or both.
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Paul Miller, MD | Study site | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Colorado Center for Bone Research | Lakewood | Colorado | 80337 | United States |
Subjects were able to consent and participate in one or both cohorts (Outcome Measure Reporting Groups: Skeletal and Body Composition). GE prematurely ended the study with 82 consented individuals but a total of 135 scans were acquired across the cohorts.
A total of 17 subjects consented for the Skeletal Cohort only. A total of 12 subjects consented for the Body Composition Cohort only. A total of 53 subjects consented to participate in both the Skeletal and Body Composition cohorts. Recruitment occurred at the primary site from January to December 2012.
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| ID | Title | Description |
|---|---|---|
| FG000 | Skeletal | Recruitment for each cohort will include approximately equal male/female split (no gender bias). Depending on the weight category, for each cohort, a minimum of 30 adult subjects will be measured on two of the three systems, and 60 will be measured on all three systems (total of evaluable 90 subjects). Subjects willing to participate in Skeletal & Body Composition are counted towards the 90 evaluable subject requirement of the protocol for the Skeletal Cohort. |
| FG001 | Body Composition Only | Recruitment for each cohort will include approximately equal male/female split (no gender bias). Depending on the weight category, for each cohort, a minimum of 30 adult subjects will be measured on two of the three systems, and 60 will be measured on all three systems (total of evaluable 90 subjects). Subjects willing to participate in Skeletal & Body Composition are counted towards the 90 evaluable subject requirement of the protocol for the Body Composition Cohort. |
| FG002 | Skeletal & Body Composition | "Skeletal & Body Composition" was not a cohort that was actively recruited to, it is a cohort for reporting purposes. Subjects were able to consent and enroll to both Skeletal and Body Composition cohorts and these subjects will be counted for under this joint cohort. |
| Title | Milestones | Reasons Not Completed | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Overall Study |
|
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| ID | Title | Description |
|---|---|---|
| BG000 | Skeletal | Recruitment for each cohort will include approximately equal male/female split (no gender bias). Depending on the weight category, for each cohort, a minimum of 30 adult subjects will be measured on two of the three systems, and 60 will be measured on all three systems (total of evaluable 90 subjects). Subjects willing to participate in Skeletal & Body Composition are counted towards the 90 evaluable subject requirement of the protocol for the Skeletal Cohort. |
| Units | Counts |
|---|---|
| Participants |
|
| Title | Description | Population Description | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Denominator Units Selected | Denominators | Classes |
|---|---|---|---|---|---|---|---|---|---|
| Age, Categorical | Count of Participants |
| Type | Title | Description | Population Description | Reporting Status | Anticipated Posting Date | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Time Frame | Units Analyzed | Denominator Units Selected | Arm/Group Information | Denominators | Classes | Analyses | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Primary | Short Term Precision Comparison Across Three DXA Devices | BMD precision will be reported across three DXA devices in major skeletal and body composition sites. The short-term precision was calculated as RMS-SD (root mean square standard deviation) over the mean for each cohort. The skeletal cohort will not have short-term precision value for body composition indexes due to the different region of measurement. The same will apply to the body composition cohort. As the result, the "Skeletal & Body Composition" cohort identified in participant flow and overall study summary will not have an analysis provided. | Posted | Number | Percentage of variance | Less than 6 months |
|
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| ID | Title | Description | Deaths (Affected) | Deaths (At Risk) | Serious Events (Affected) | Serious Events (At Risk) | Other Events (Affected) | Other Events (At Risk) |
|---|---|---|---|---|---|---|---|---|
| EG000 | Skeletal | Recruitment for each cohort will include approximately equal male/female split (no gender bias). Depending on the weight category, for each cohort, a minimum of 30 adult subjects will be measured on two of the three systems, and 60 will be measured on all three systems (total of evaluable 90 subjects). |
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| Title | Organization | Phone | Extension | |
|---|---|---|---|---|
| Yi Xia | GE Healthcare | 1 (608) 221-1551 | 500-3045 | Yi.Xia@ge.com |
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| ID | Term |
|---|---|
| D001851 | Bone Diseases, Metabolic |
| D001835 | Body Weight |
| ID | Term |
|---|---|
| D001847 | Bone Diseases |
| D009140 | Musculoskeletal Diseases |
| D008659 | Metabolic Diseases |
| D009750 | Nutritional and Metabolic Diseases |
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| Lunar iDXA (GEHC) | Device | Lunar iDXA (GEHC) used to obtain Skeletal, and/or Body Composition measurements |
|
| Discovery A (Hologic | Device | Discovery A (Hologic) used to obtain Skeletal, and/or Body Composition measurements |
|
| BG001 | Body Composition | Recruitment for each cohort will include approximately equal male/female split (no gender bias). Depending on the weight category, for each cohort, a minimum of 30 adult subjects will be measured on two of the three systems, and 60 will be measured on all three systems (total of evaluable 90 subjects). Subjects willing to participate in Skeletal & Body Composition are counted towards the 90 evaluable subject requirement of the protocol for the Body Composition Cohort. |
| BG002 | Skeletal and Body Composition | "Skeletal and Body Composition" was not a cohort that was actively recruited to, it is a cohort for reporting purposes. Subjects were able to consent and enroll to both Skeletal and Body Composition cohorts and these subjects will be counted for under this joint cohort. |
| BG003 | Total | Total of all reporting groups |
| Participants |
|
| Sex: Female, Male | Count of Participants | Participants |
|
| OG001 | Body Composition Only | Recruitment for each cohort will include approximately equal male/female split (no gender bias). Depending on the weight category, for each cohort, a minimum of 30 adult subjects will be measured on two of the three systems, and 60 will be measured on all three systems (total of evaluable 90 subjects). Subjects willing to participate in Skeletal & Body Composition are counted towards the 90 evaluable subject requirement of the protocol for the Body Composition Cohort. |
|
|
| 0 |
| 70 |
| 0 |
| 70 |
| EG001 | Body Composition | Recruitment for each cohort will include approximately equal male/female split (no gender bias). Depending on the weight category, for each cohort, a minimum of 30 adult subjects will be measured on two of the three systems, and 60 will be measured on all three systems (total of evaluable 90 subjects). | 0 | 65 | 0 | 65 |
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| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |