Attachment 3a
Summary of Examination and Questionnaire Changes in 2021-2022
TABLE OF CONTENTS
MEC EXAMINATION CHANGE SUMMARY 2
QUESTIONNAIRE CHANGE SUMMARY 6
HOUSEHOLD SCREENER QUESTIONNAIRE (SCQ) AND FAMILY RELATIONSHIP QUESTIONNAIRE (SFQ) 7
In 2021-2022, the NHANES Examination consist of the following components:
Standing Balance
Dual Energy X-Ray Absorptiometry (DXA)
Blood Pressure Measurement
Liver Elastography
Urine collection
Venipuncture
To promote the safety of survey participants as well as field staff in the context of the pandemic, for the 2021-2022 cycle, NHANES program will make the following changes to the examination components to shorten the face-to-face contact in the Mobil Examination Center (MEC), and to preserve the essential data collection needed in monitoring the nation’s health.
For the Standing Balance Component, all nonessential subcomponents (i.e., binocular static visual acuity, dynamic visual acuity, contrast sensitivity and lensometer) will not be conducted so that the length of the component and overall time in the MEC is reduced.
Dual Energy X-Ray Absorptiometry (DXA) component will be modified to drop the osteoporosis assessment of the spine and femur. Reasoning for this change is to reduce the length of the component and overall time in the MEC.
Measurement of resting pulse rate will be discontinued for children 0-7 years. This change is made to reduce the overall MEC exam time, and in account of the relatively lower utility of this data item for this age group. Resting pulse rate will still be measured for survey participants 8 years and older as part of their blood pressure measurements. Blood pressure has always been measured among participants 8 years and older. No changes anticipated for this protocol or the target age group in the 2021-22 cycle.
While the exam protocol for venipuncture/phlebotomy component will remain the same, improved talking points for children and their parents, and additional distraction and pain management techniques will be implemented to improve the phlebotomy response rates for children aged 1-17 years old. Blood will be collected for COVID-19 serology tests. This will provide data for national estimates of COVID-19 immunity. In addition, this information can be used in conjunction with other exam and lab data collected to further assess the effect of COVID-19 on the nation’s health. There are other changes in lab analytes planned for the 2021-22 cycle as well. Complete lists of these changes are provided in Attachment 6a. Lab analytes from previous cycles of NHANES are found in Attachment 6b.
Audiometry and the Words-In-Noise components will not be conducted for safety reasons. The exam is required to be conducted in a relatively small soundproof booth where the MEC staff must spend time with the participants to set-up the earphones and look inside the participant’s ear. Afterwards, the participant was left in this booth with door closed through the exam. Therefore, it was decided to not conduct this exam during this data collection period.
The Cognitive Function component was conducted as part of the MEC Interview. In 2021-22, we will not conduct this exam. The target group for this exam is participants 60 years and older, and the exam requires the participant and the MEC staff to interact face-to-face to complete the multiple domains of the test. Individuals 60 years and older are at higher risk for severe illness from COVID-19. Given the situation of the pandemic, it was deemed best not to conduct this exam to reduce the face-to-face contact and overall time for this group of participants.
The Oral Health examination will not be conducted for safety reasons. NHANES is a health study, not conducting an exam during which the MEC dentist is looking and touching the inside of a participant’s open mouth seems prudent in the context of pandemic.
HPV swab collection in both males and females will not be conducted to reduce the time of the overall survey for participant and MEC Staff safety.
Traditionally, each MEC examination session was scheduled with 10-12 participants. To preserve proper social distancing, fewer participants will be scheduled in each MEC section so the person/space ratio in the MEC is consistent with CDC guidance. Additional sanitary protocols will be implemented in the MEC to clean the equipment and contacting surfaces after the completion of each individual exam and each exam section.
Screening for COVID-19 will take place prior to participants and visitors (i.e., interpreters, consultants, contractors, etc.) entering the NHANES Mobile Examination Center (MEC). The screening protocol will follow the most updated CDC guidance. Participants and visitors will be asked about any COVID-19 symptoms and/or contacts with individuals diagnosed having COVID-19. Temperatures via thermal thermometers will also be taken. Those with symptoms, or who have had contact to individuals with COVID-19 will not be allowed to enter the MEC and their visits will be rescheduled if possible. If there is a reliable COVID-19 antigen test that is readily available and feasible for the MEC setting and staff resource when NHANES returns to the field, NHANES will seek additional OMB approval to request use of this test.
All screening questions and temperature checks will be completed by NHANES staff and be done in a large canopy tent outside the MEC. This tent will be large enough to allow tables/chairs with social distancing inside. Upon arrival to the MEC location, all participants that arrive via car will be asked to remain in their cars until called by MEC staff to come to the tent for check-in. This will enable safe social distancing and allowing the staff to help check in participants that arrive via public transportation or ride-hailing services (i.e., taxi, Uber, Lyft). Each participant or family members will be screened at a time with sanitizing occurring after each screening. Everyone will be advised mask wearing is mandatory and will be provided with a mask or will be allowed to wear their own mask if they choose.
To increase operational efficiency, NHANES has modified the examination that formerly only conducted by physicians to allow a broader range of health care providers to conduct. This provides greater flexibility in hiring and resource management. In 2021-22, the MEC clinician role may be filled by a Registered Nurse, Nurse Practitioner, Physician Assistant as well as a physician. In some cases, when the MEC is operating under extended hours, it may be filled by a remote clinician on staff. In these situations, participants will receive referral and consultations that they usually receive in-person from the clinician in the MEC through an audio or teleconference from a trained clinician from the study remotely.
Component Name Target Age |
Descriptions |
MEC Entry Screening Target Age: Birth+ |
|
Target Age: Birth+ |
|
Standing Balance Target Age: 20-69 years |
|
Dual Energy X-Ray Absorptiometry (DXA) Target Age: 8-59 years |
|
Blood Pressure Measurement Target Age: 8+ years |
|
Liver Elastography Target Age: 12+ years |
|
Urine collection Target Age: 3+ years |
|
Venipuncture Target Age: 1+ years |
|
Audiometry (Includes Words-In-Noise) Target Age: 6-19 and 70+ years |
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Cognitive Function Target Age: 60+ years |
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Oral Health Target Age: 1+ years |
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HPV swab collection Target Age: 14-59 years |
|
The NHANES interview consists of the following major components:
Household Screener Questionnaire (determines eligibility) (SCQ)
Household Family Relationship Questionnaire (SFQ)
Household Sample Participant Questionnaire (HPQ)
Household Family Questionnaire (HFQ)
Mobile Examination Center (MEC) Interview (CAPI and ACASI)
Dietary Interviews (24-hour Dietary Recall, Post-Dietary Recall Questions, and 30-day Dietary Supplement Use)
Special Follow-Up Questionnaire: Flexible Consumer Behavior Survey (FCBS) Phone Follow-Up Supplemental Module
To promote the safety of survey participants as well as field staff in the context of the pandemic, for the 2021-2022 cycle, NHANES program will make changes to the interview mode for the following instruments to reduce face-to-face contact:
For the Household Screener Questionnaire (SCQ) and Family Relationship Questionnaire (SFQ), a multi-mode approach will be implemented so the respondent will have the option to complete the questionnaires using a self-administered web instrument, a self-administered paper questionnaire, a toll-free telephone number to participate in an interviewer-administered telephone interview, or having an in-person interview with an interviewer at their residence. Use of hand card will be eliminated for administering screeners to reduce the touch points with in-person interview.
In previous NHANES, the Household Sample Participant Questionnaire (HPQ) and Family Questionnaire (HFQ) were administered by field interviewers as in-person interviews. In 2021-2022, these interviews will be conducted via telephone, unless the participant does not have access to a phone. Appointments will be scheduled with potential participants after their eligibilities are confirmed with SCQ.
Mobile Examination Center (MEC) Interview will mainly be conducted using the Audio-Computer-Assisted Self-Interview (ACASI) system so participants can complete the questionnaire on their own using the touch screen on the computer. Only limited questions will be asked by the phlebotomist in the MEC using the Computer-Assisted Personal Interview (CAPI) system.
Similar to previous NHANES, two Dietary Interviews (24-hour Dietary Recall, Post-Dietary Recall Questions, and 24-hour Dietary Supplement use) will be collected for each participant. However, instead of having the first dietary interview collected in-person by an interviewer in the MEC and the second one collected via telephone, both dietary interviews will be collected via telephone in 2021-2022. At the end of their MEC visit, participants will be asked to take part in the dietary interview and schedule a telephone appointment.
With most of the interviews developed to be conducted via telephone or self-administered ACASI, a significant reduction in interview content is planned for the 2021-2022 data collection so the length of the interviews is feasible for the designed interview modes with reasonable burden to the respondents. The NHANES staff conducted a thorough review of the questionnaire content and made changes to focus on retaining questions that are directly related to the interpretation of exam or lab data collected in the survey and relevant to assess the pandemic’s effect on health topics. As a result, the household HPQ and HFQ retained 337 questions from the original 769 questions in the previous cycle. There are 14 new questions added in various sections in HPQ and HFQ. In addition, a new section was added in HPQ to ask 17 COVID infection and testing related questions that are essential in the interpretation of laboratory results collected in the survey on COVID serology. There are 94 questions retained from the 184 questions in the MEC interview questionnaire in the previous cycle. The descriptions of these changes are included in the tables below.
Household Screener Questionnaire (SCQ) and Family Relationship Questionnaire (SFQ)
Component Name |
Descriptions |
Screener Module #1 & #2 (SCQ and SFQ) |
|
Sample Person Questionnaire (HPQ)
Component Name |
Descriptions |
Respondent Selection (RIQ) |
|
Demographic Background (DMQ) |
|
Housing Characteristics (HOQ) |
|
Smoking (SMQ) |
|
Consumer Behavior (CBQ) |
|
Income (INQ) |
|
Food Security (FSQ) |
|
Tracking and Tracing (TTQ) |
|
Salt Use (SUQ) |
|
Water Module (HWC) |
|
Component Name Target Age |
Descriptions |
Sexual Orientation (SXQ-O) Target Age: 18-59 years |
|
Depression Screen (DPQ) Target Age: 12+ years |
|
Reproductive Health (RHQ) Target Age: 12+ years (Female); women 60+ years will not be asked pregnancy history |
|
Current Health Status (HSQ) Target Age: 16+ years |
|
Physical Activity and Physical Fitness (PAQ) Target Age: 12-15 years |
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Tobacco (SMQ) Target Age: 12+ years |
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Alcohol (ALQ) Target Age: 12+ years |
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Kidney Conditions (KIQ) Target Age: 20+ years |
|
Drug Use (DUQ) Target Age: 12-59 years |
|
Sexual Behavior (SXQ) Target Age: 14-69 years |
|
Component Name Target Age |
Descriptions |
Respondent Selection (RIQ) Target Age: 12+ years |
|
Pesticide Use (PUQ) Target Age: 8+ years |
|
Weight History (WHQ) Target Age: 8-15 years |
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Dietary Behavior and Nutrition (DBQ) Target Age: 12-15 years |
|
Component Name and ID (3 Letters) |
Descriptions |
Dietary Recall (DRX) |
|
Post-Dietary Recall Questions (DRQ) |
|
Dietary Supplement (SAQ) |
|
Special Follow-Up Questionnaires
Component Name and ID (3 Letters) |
Descriptions |
Flexible Consumer Behavior Survey (FCBS) Phone Follow-Up Supplemental Module |
|
File Type | application/vnd.openxmlformats-officedocument.wordprocessingml.document |
Author | Gahche, Jaime J. (CDC/OPHSS/NCHS) |
File Modified | 0000-00-00 |
File Created | 2022-05-19 |