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Protocol - Total Pregnancy Weight Gain - Weight Measured During Gestation

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Description

There are several research contexts in which this information could be collected, and how the information is collected will vary depending on the context and availability of related information.

Weight gain during pregnancy is commonly monitored as a part of prenatal care. Total weight gain is calculated at the end of pregnancy using a self-reported pre-pregnancy weight and weight measured at the last prenatal visit before delivery (usually within 1 week of delivery). The information to be collected would be (1) weight measured at final prenatal visit (to the nearest 100 g, e.g., 59.1 kg); (2) date of final visit; (3) pre-pregnancy weight; (4) height; (5) gestational age at final visit; and (6) gestational age at delivery. If the opportunity exists to collect the gestational weight prospectively as part of the research protocol, this is preferred because weights taken using a research protocol are better standardized for amount of participant clothing and scales are regularly calibrated. See Measured Weight protocol regarding the measurement of weight, and record weight to the nearest 100 g. Data to be collected are (1) weight during pregnancy; (2) date on which the weight is taken; (3) gestational age when measurement taken; (4) pre-pregnancy weight; (5) height; and (6) gestational age at delivery.

Specific Instructions

None

Availability

Available

Protocol

Weights Measured during Gestation (Research Protocol)

Gestational ages, date of initial examination, and pre-pregnancy weight and height are abstracted from medical records, as described in the protocol for abstraction from prenatal charts.

Final weight in pregnancy is measured at prenatal or research visits using a research protocol (see Measured Weight).

Personnel and Training Required

For the aspects of the measures requiring chart review, the abstracter should be trained in medical terminology and records review; for measuring weights, the examiner should be trained as for 021501 Measured Weight. If measure is conducted by computer-assisted personal interviewing (CAPI), interviewer trained in CAPI administration is required; otherwise, no training is required for the paper-and-pencil interviewing (PAPI).

Equipment Needs

Computer (for computer-assisted personal interviewing [CAPI]), paper-and-pencil (for paper-and-pencil interviewing [PAPI]).

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

Medical record abstraction

Lifestage

Pregnancy

Participants

Women who have had a pregnancy (20 weeks or longer) or are currently pregnant.

Selection Rationale

Weight gain in pregnancy is associated with pregnancy outcomes, and there are recommended ranges of total weight gain depending on pre-pregnancy body mass index (BMI). Women whose total gain is outside these recommendations (too low or too high) are at increased risk of delivering a low and high birth weight (i.e., small-for-gestational age [SGA] and large-for-gestational age [LGA] newborns), respectively. Risk for preeclampsia, gestational diabetes, and cesarean delivery are influenced by weight gain. Excess maternal weight gain during pregnancy, especially among those women who were normal weight before pregnancy, has also been independently associated with risk of overweight and obesity in the offspring.

Language

English

Standards
StandardNameIDSource
caDSR Form PhenX PX021303 - Total Pregnancy Weight Gain Weight Measured During Ges 5806043 caDSR Form
Derived Variables

Total Weight Gain in Pregnancy

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:

a. Changed name of measure

b. Added a new protocol

c. New Data Dictionary

Protocol Name from Source

American Congress of Obstetricians and Gynecologists (ACOG), Antenatal Record Forms B and C, 2014

Source

Protocol for chart abstraction:

American Congress of Obstetricians and Gynecologists (ACOG). (2014). Antenatal Record Forms B and C. Washington, DC: Author.

General References

Institute of Medicine, Committee to Reexamine IOM Pregnancy Weight Guidelines. (2009). Weight gain during pregnancy: Reexamining the guidelines. K. M. Rasmussen & A. L. Yaktine (Eds.). Washington, DC: National Academy Press.

Rasmussen, K. M., Catalano, P. M., & Yaktine, A. L. (2009). New guidelines for weight gain during pregnancy: What obstetrician/gynecologists should know. Current Opinion in Obstetrics and Gynecology, 21, 521-526.

Protocol ID

21303

Variables
Export Variables
Variable Name Variable IDVariable DescriptiondbGaP Mapping
PX021303_TotalWeight_DuringGestation_Date_Visit_1
PX021303020100 What is today's date of examination? N/A
PX021303_TotalWeight_DuringGestation_Date_Visit_10
PX021303110100 What is today's date of examination? N/A
PX021303_TotalWeight_DuringGestation_Date_Visit_2
PX021303030100 What is today's date of examination? N/A
PX021303_TotalWeight_DuringGestation_Date_Visit_3
PX021303040100 What is today's date of examination? N/A
PX021303_TotalWeight_DuringGestation_Date_Visit_4
PX021303050100 What is today's date of examination? N/A
PX021303_TotalWeight_DuringGestation_Date_Visit_5
PX021303060100 What is today's date of examination? N/A
PX021303_TotalWeight_DuringGestation_Date_Visit_6
PX021303070100 What is today's date of examination? N/A
PX021303_TotalWeight_DuringGestation_Date_Visit_7
PX021303080100 What is today's date of examination? N/A
PX021303_TotalWeight_DuringGestation_Date_Visit_8
PX021303090100 What is today's date of examination? N/A
PX021303_TotalWeight_DuringGestation_Date_Visit_9
PX021303100100 What is today's date of examination? N/A
PX021303_TotalWeight_DuringGestation_GestationalAge_Visit_1
PX021303020200 What is the patient's current gestational age? N/A
PX021303_TotalWeight_DuringGestation_GestationalAge_Visit_10
PX021303110200 What is the patient's current gestational age? N/A
PX021303_TotalWeight_DuringGestation_GestationalAge_Visit_2
PX021303030200 What is the patient's current gestational age? N/A
PX021303_TotalWeight_DuringGestation_GestationalAge_Visit_3
PX021303040200 What is the patient's current gestational age? N/A
PX021303_TotalWeight_DuringGestation_GestationalAge_Visit_4
PX021303050200 What is the patient's current gestational age? N/A
PX021303_TotalWeight_DuringGestation_GestationalAge_Visit_5
PX021303060200 What is the patient's current gestational age? N/A
PX021303_TotalWeight_DuringGestation_GestationalAge_Visit_6
PX021303070200 What is the patient's current gestational age? N/A
PX021303_TotalWeight_DuringGestation_GestationalAge_Visit_7
PX021303080200 What is the patient's current gestational age? N/A
PX021303_TotalWeight_DuringGestation_GestationalAge_Visit_8
PX021303090200 What is the patient's current gestational age? N/A
PX021303_TotalWeight_DuringGestation_GestationalAge_Visit_9
PX021303100200 What is the patient's current gestational age? N/A
PX021303_TotalWeight_DuringGestation_Height_Visit_1
PX021303020400 What is the patient's current height? N/A
PX021303_TotalWeight_DuringGestation_Height_Visit_10
PX021303110400 What is the patient's current height? N/A
PX021303_TotalWeight_DuringGestation_Height_Visit_2
PX021303030400 What is the patient's current height? N/A
PX021303_TotalWeight_DuringGestation_Height_Visit_3
PX021303040400 What is the patient's current height? N/A
PX021303_TotalWeight_DuringGestation_Height_Visit_4
PX021303050400 What is the patient's current height? N/A
PX021303_TotalWeight_DuringGestation_Height_Visit_5
PX021303060400 What is the patient's current height? N/A
PX021303_TotalWeight_DuringGestation_Height_Visit_6
PX021303070400 What is the patient's current height? N/A
PX021303_TotalWeight_DuringGestation_Height_Visit_7
PX021303080400 What is the patient's current height? N/A
PX021303_TotalWeight_DuringGestation_Height_Visit_8
PX021303090400 What is the patient's current height? N/A
PX021303_TotalWeight_DuringGestation_Height_Visit_9
PX021303100400 What is the patient's current height? N/A
PX021303_TotalWeight_DuringGestation_InitialExamination_Date
PX021303010100 What is the date of initial examination? N/A
PX021303_TotalWeight_DuringGestation_InitialExamination_Gestational_Age
PX021303010200 What ist he patient's gestational age at more
initial examination? show less
N/A
PX021303_TotalWeight_DuringGestation_InitialExamination_Height
PX021303010400 What is the patient's height? N/A
PX021303_TotalWeight_DuringGestation_InitialExamination_Weight
PX021303010300 What is the patient's pre-pregnancy weight more
to the nearest 100g? show less
Variable Mapping
PX021303_TotalWeight_DuringGestation_Weight_Visit_1
PX021303020300 What is the patient's current weight to the more
nearest 100g? show less
N/A
PX021303_TotalWeight_DuringGestation_Weight_Visit_10
PX021303110300 What is the patient's current weight to the more
nearest 100g? show less
N/A
PX021303_TotalWeight_DuringGestation_Weight_Visit_2
PX021303030300 What is the patient's current weight to the more
nearest 100g? show less
N/A
PX021303_TotalWeight_DuringGestation_Weight_Visit_3
PX021303040300 What is the patient's current weight to the more
nearest 100g? show less
N/A
PX021303_TotalWeight_DuringGestation_Weight_Visit_4
PX021303050300 What is the patient's current weight to the more
nearest 100g? show less
N/A
PX021303_TotalWeight_DuringGestation_Weight_Visit_5
PX021303060300 What is the patient's current weight to the more
nearest 100g? show less
N/A
PX021303_TotalWeight_DuringGestation_Weight_Visit_6
PX021303070300 What is the patient's current weight to the more
nearest 100g? show less
N/A
PX021303_TotalWeight_DuringGestation_Weight_Visit_7
PX021303080300 What is the patient's current weight to the more
nearest 100g? show less
N/A
PX021303_TotalWeight_DuringGestation_Weight_Visit_8
PX021303090300 What is the patient's current weight to the more
nearest 100g? show less
N/A
PX021303_TotalWeight_DuringGestation_Weight_Visit_9
PX021303100300 What is the patient's current weight to the more
nearest 100g? show less
N/A
Anthropometrics
Measure Name

Total Pregnancy Weight Gain

Release Date

October 1, 2015

Definition

Total change in weight of the participant over the course of pregnancy for the most recent pregnancy.

Purpose

The total pregnancy weight measure is used to assess the individual’s gestational weight gain in the current or past pregnancy and/or evaluate total weight gain with respect to recommendations for total weight gain based on pre-pregnancy body mass index (BMI, kg/m2).

Keywords

Anthropometrics, weight, body mass index (BMI), gestational diabetes, birth weight, PRAMS

Measure Protocols
Protocol ID Protocol Name
21301 Total Pregnancy Weight Gain - Self-Reported Weight Gain
21302 Total Pregnancy Weight Gain - Abstracted From Prenatal Charts
21303 Total Pregnancy Weight Gain - Weight Measured During Gestation
Publications

Chia, A. R., et al. (2020) Maternal plasma metabolic markers of neonatal adiposity and associated maternal characteristics: The GUSTO study. Scientific Reports. 2020 June; 10(1). doi: 10.1038/s41598-020-66026-5