Loading…

Protocol - Weight Loss/Gain

Add to My Toolkit
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

None

Availability

Available

Protocol

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. How much did {you/[participant]*} weigh a year ago†? [If {you were/she was} pregnant a year ago, how much did {you/she} weigh before your pregnancy?]

Note to interviewer: ENTER WEIGHT IN POUNDS OR KILOGRAMS

|___|___|___| ENTER NUMBER OF POUNDS
CAPI INSTRUCTION:
SOFT EDIT 75-500, HARD EDIT 50-750

OR

|___|___|___|
ENTER NUMBER OF KILOGRAMS
CAPI INSTRUCTION:
SOFT EDIT 34-225, HARD EDIT 23-338

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).

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).

Personnel and Training Required

The trained interviewer should be able to administer a questionnaire and be able to probe for information as necessary.

Equipment Needs

None

Requirements
Requirement CategoryRequired
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

Interviewer-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 2007-2008 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

Standards
StandardNameIDSource
Logical Observation Identifiers Names and Codes (LOINC) PhenX - wt loss - gain protocol 62415-5 LOINC
Human Phenotype Ontology Weight Loss HP:0001824 HPO
Human Phenotype Ontology Decreased Body Weight HP:0004325 HPO
Human Phenotype Ontology Abnormality of body weight HP:0004324 HPO
caDSR Form PhenX PX021401 - Weight Loss Gain 5805976 caDSR Form
Derived Variables

None

Process and Review

The Expert Review Panel #1 reviewed the measures in the Anthropometrics, Diabetes, Physical Activity and Physical Fitness, and Nutrition and Dietary Supplements domains.

Guidance from the ERP includes:

• Revised descriptions of measure

Back-compatible: no changes to Data Dictionary

Previous version in Toolkit archive (link)

Protocol Name from Source

National Health and Nutrition Examination Survey (NHANES), Weight History Questionnaire, 2007

Source

Centers for Disease Control and Prevention, National Center for Health Statistics. (2007). National Health and Nutrition Examination Survey (NHANES) 2007-2008 Questionnaire. WEIGHT HISTORY - WHQ. Hyattsville, MD: U.S. Department of Health and Human Services, Centers for Disease Control and Prevention. Question #WHQ.053.

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

21401

Variables
Export Variables
Variable Name Variable IDVariable DescriptiondbGaP Mapping
PX021401_Weight_1Year_Ago_Coded
PX021401010300 How much did {you/[participant]} weigh a year ago? N/A
PX021401_Weight_1Year_Ago_Kgs
PX021401010100 How much did {you/[participant]} weigh a year ago? N/A
PX021401_Weight_1Year_Ago_Lbs
PX021401010200 How much did {you/[participant]} weigh a year ago? N/A
PX021401_Weight_Before_Pregnancy_Coded
PX021401020300 [If {you were/she was} pregnant a year ago, more
how much did {you/she} weigh before your pregnancy?] show less
N/A
PX021401_Weight_Before_Pregnancy_Kgs
PX021401020100 [If {you were/she was} pregnant a year ago, more
how much did {you/she} weigh before your pregnancy?] show less
N/A
PX021401_Weight_Before_Pregnancy_Lbs
PX021401020200 [If {you were/she was} pregnant a year ago, more
how much did {you/she} weigh before your pregnancy?] show less
Variable Mapping
PX021401_Weight_Before_Pregnancy_Proxy_Name
PX021401030200 When the question is being asked of a proxy more
respondent, insert the participant's name here show less
N/A
Anthropometrics
Measure Name

Weight Loss/Gain

Release Date

March 27, 2009

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
21401 Weight Loss/Gain
Publications

There are no publications listed for this protocol.