Pilot Testing on New NHANES 2009-10 Content

Attachment G.

Protocol for Sagittal Abdominal Diameter Pilot Study (ages 8+)

National Health and Nutrition Examination Survey (NHANES)

Sagittal Abdominal Diameter Pilot Study

OMB no. 0920-0237

Expires: 12/31/2011

Assurance of confidentiality – All information which would permit identification of an

individual, a practice, or an establishment will be held confidential, will be used for

statistical purposes only by NCHS staff, contractors, and agents only when required and with necessary controls, and will not be disclosed or released to other persons without the consent of the individual or establishment in accordance with section 308(d) of the Public Health Service Act (42 USC 242m) and the Confidential Information Protection and Statistical Efficiency Act (PL-107-347).

Public reporting burden of this collection of information is estimated to average 5 minutes per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. An agency may not conduct or sponsor, and a person is not required to respond to a collection of information, unless it displays a currently valid OMB control number. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden to CDC/ATSDR Reports Clearance Officer; 1600 Clifton Road, MS D-74, Atlanta, GA 30333. ATTN: PRA (0920-0237).

Sagittal Abdominal Diameter Pilot Study Protocol:

Eligibility: Sample persons aged 8 years and older are eligible for the Sagittal Abdominal Diameter (SAD) Pilot Study.

Informed Consent: Informed consent will be obtained as a part of standard NHANES consenting procedures.

Exclusion Criteria: SAD will be measured on the table used to take dual energy x-ray absorptiometry (DXA) scans. Participants weighing more than the dual energy x-ray absorptiometry (DXA) table can support (currently 450 lbs) will be excluded from this exam. Pregnant women also will be excluded.

Study Design: SAD is an anthropometric measure of visceral obesity or the size of the abdomen. SAD represents the distance from the back to the upper abdomen, midway between the top of the pelvis and the bottom of the ribs, measured while supine. The SAD measurement requires identification of the iliac crests on the supine participant, positioning of a sliding-beam caliper, and direct reading of the SAD from the centimeter scale affixed to the caliper’s shaft. For the purpose of initial quality control, it would be optimal to take the measurement in duplicate with possible extension to 4 readings in the event the first 2 are highly discrepant.

Data Collection: The SAD measurements will be taken in the same MEC examination room used for the DXA component. Measurements will be taken while the participant lies supine on the DXA table.

Report of Findings: Results will not be reported to the participant.