Protocol - Weight Loss/Gain
- Ethnicity and Race
- Height - Knee Height
- Total Pregnancy Weight Gain - Abstracted From Prenatal Charts
- Total Pregnancy Weight Gain - Self-Reported Weight Gain
- Total Pregnancy Weight Gain - Weight Measured During Gestation
Description
The protocol contains a question about the participant’s weight 1 year ago.*
*NOTE: This period can be modified for different periods. Depending on your hypothesis, you may want to modify the time interval as appropriate (e.g., 3 months, 6 months, 1 year).
Specific Instructions
The following protocol is part of a computerized interview. This may be used in a noncomputerized format. Also, the protocol may be used in personal and self-administered formats.
Note to PhenX User: The National Health and Nutrition Examination Survey (NHANES) does not ask proxy respondents about a child’s weight change. The weight change question for participants under age 16 years comes from Garmey et al. (2008).
Availability
Protocol
Weight Loss/Gain
1. How much did {you/SP*} weigh a year ago†? [If {you were/she was} pregnant a year ago, how much did {you/she} weigh before your pregnancy?]
ENTER WEIGHT IN POUNDS OR KILOGRAMS
DISPLAY OPTIONAL SENTENCE [If {you were/she was} pregnant . . .] ONLY IF SP IS FEMALE AND SP AGE IS 17 THROUGH 60.
|___|
[ ] 1 ENTER WEIGHT IN POUNDS
[ ] 2 ENTER WEIGHT IN KILOGRAMS
[ ] 7 REFUSED
[ ] 9 DON’T KNOW
|___|___|___|
ENTER NUMBER OF POUNDS
OR
|___|___|___|
ENTER NUMBER OF KILOGRAMS
OR
[ ] 777 REFUSED
[ ] 999 DON’T KNOW
* When the question is being asked of a proxy respondent, insert the participant’s name here.
†This time period can be modified for different time periods. Depending on your hypothesis, you may want to modify the time interval as appropriate (e.g., 3 months, 6 months, 1 year).
Personnel and Training Required
None
Equipment Needs
None
Requirements
| Requirement Category | Required |
|---|---|
| Major equipment | No |
| Specialized training | No |
| Specialized requirements for biospecimen collection | No |
| Average time of greater than 15 minutes in an unaffected individual | No |
Mode of Administration
Self-administered questionnaire
Lifestage
Infant, Toddler, Child, Adolescent, Adult, Senior
Participants
Participants aged 16 years or older or by knowledgeable adult proxy for children younger than 16 years of age
Selection Rationale
This National Health and Nutrition Examination Survey 2019-2020 protocol was selected as best practice methodology and is one of the most widely used protocols to obtain a weight loss/gain measurement. The studies from which these protocols are derived provide a valid national comparator database.
Language
Chinese, English, Spanish
While the English version of this protocol has been updated, the available translations have not and reflect a previous version. These differences may impact the compatibility between the English and Spanish/Chinese versions. It is the responsibility of the investigator to determine if the translations are sufficiently compatible with the English version for their research and subsequent analysis.
Standards
| Standard | Name | ID | Source |
|---|
Derived Variables
None
Process and Review
The PhenX Steering Committee (SC) reviewed this protocol in October 2023. Guidance from the SC includes:
- Updated protocol
Protocol Name from Source
National Health and Nutrition Examination Survey (NHANES), Weight History Questionnaire, 2019-2020
Source
Centers for Disease Control and Prevention, National Center for Health Statistics. National Health and Nutritional Examination Survey (NHANES) 2019-2020. Weight History - WHQ (Question WHQ.053). Hyattsville, MD: U.S. Department of Health and Human Services, Centers for Disease Control and Prevention.
General References
Garmey, E. G., Liu, Q., Sklar, C. A., Meacham, L. R., Mertens, A. C., Stovall, M. A., et al. (2008). Longitudinal changes in obesity and body mass index among adult survivors of childhood acute lymphoblastic leukemia: A report from the Childhood Cancer Survivor Study. Journal of Clinical Oncology, 26(28), 4639-4645. doi:10.1200/JCO.2008.16.3527
Protocol ID
21402
Variables
Export Variables| Variable Name | Variable ID | Variable Description | dbGaP Mapping | |
|---|---|---|---|---|
| PX021402_Weight_Loss_Gain_Weight_One_Year_Ago | ||||
| PX021402010001 | How much did {you/SP*} weigh a year ago? [If more | N/A | ||
| PX021402_Weight_Loss_Gain_Weight_One_Year_Ago_Kilograms | ||||
| PX021402010003 | How much did {you/SP*} weigh a year ago? [If more | N/A | ||
| PX021402_Weight_Loss_Gain_Weight_One_Year_Ago_Pounds | ||||
| PX021402010002 | How much did {you/SP*} weigh a year ago? [If more | N/A | ||
Measure Name
Weight Loss/Gain
Release Date
September 16, 2024
Definition
Change in weight over the past year
Purpose
This measure is collected to obtain information on an individual’s health status in relation to weight loss or weight gain over the designated time period (e.g., the past year).
Keywords
Anthropometrics, weight, body mass index, BMI, obesity, NHANES, gerontology, aging, geriatrics
Measure Protocols
| Protocol ID | Protocol Name |
|---|---|
| 21402 | Weight Loss/Gain |
Publications
There are no publications listed for this protocol.