[2023-05-04 - Added WIC Infant and Toddler Feeding Practices Study-2 Data File Training Manual]
The WIC Infant and Toddler Feeding Practices Study–2 (WIC ITFPS-2) (also known as the “Feeding My Baby Study”) is a national, longitudinal study that captures data on caregivers and their children who participated in the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) around the time of the child’s birth. The study addresses a series of research questions regarding feeding practices, the effect of WIC services on those practices, and the health and nutrition outcomes of children on WIC. Additionally, the study assesses changes in behaviors and trends that may have occurred over the past 20 years by comparing findings to the WIC Infant Feeding Practices Study–1 (WIC IFPS-1), the last major study of the diets of infants on WIC. This longitudinal cohort study has generated a series of reports. These datasets include data from caregivers and their children during the prenatal period and during the children’s first four years of life (child ages 1 to 48 months).
A full description of the study design and data collection methods can be found in Chapter 1 of the Second Year Report (https://www.fns.usda.gov/wic/wic-infant-and-toddler-feeding-practices-st...). A full description of the sampling and weighting procedures can be found in Appendix B-1 of the Fourth Year Report (https://fns-prod.azureedge.net/sites/default/files/resource-files/WIC-IT...).
Processing methods and equipment used
Data in this dataset were primarily collected via telephone interview with caregivers. Children’s length/height and weight data were objectively collected while at the WIC clinic or during visits with healthcare providers. The study team cleaned the raw data to ensure the data were as correct, complete, and consistent as possible.
Study date(s) and duration
Data collection occurred between 2013 and 2018.
Study spatial scale (size of replicates and spatial scale of study area)
Respondents were primarily the caregivers of children who received WIC services around the time of the child’s birth.
Level of true replication
Unknown
Sampling precision (within-replicate sampling or pseudoreplication)
This dataset includes sampling weights that can be applied to produce national estimates. A full description of the sampling and weighting procedures can be found in Appendix B-1 of the Fourth Year Report (https://fns-prod.azureedge.net/sites/default/files/resource-files/WIC-IT...).
Level of subsampling (number and repeat or within-replicate sampling)
A full description of the sampling and weighting procedures can be found in Appendix B-1 of the Fourth Year Report (https://fns-prod.azureedge.net/sites/default/files/resource-files/WIC-IT...).
Study design (before–after, control–impacts, time series, before–after-control–impacts)
Longitudinal cohort study.
Description of any data manipulation, modeling, or statistical analysis undertaken
Each entry in the dataset contains caregiver-level responses to telephone interviews. Also available in the dataset are children’s length/height and weight data, which were objectively collected while at the WIC clinic or during visits with healthcare providers. In addition, the file contains derived variables used for analytic purposes. The file also includes weights created to produce national estimates.
The dataset does not include any personally-identifiable information for the study children and/or for individuals who completed the telephone interviews.
Description of any gaps in the data or other limiting factors
Please refer to the Second Year Report (https://www.fns.usda.gov/wic/wic-infant-and-toddler-feeding-practices-st...) for a detailed explanation of the study’s limitations.
Outcome measurement methods and equipment used
The majority of outcomes were measured via telephone interviews with children’s caregivers. Dietary intake was assessed using the USDA Automated Multiple Pass Method (https://www.ars.usda.gov/northeast-area/beltsville-md-bhnrc/beltsville-h...). Children’s length/height and weight data were objectively collected while at the WIC clinic or during visits with healthcare providers.
See file list for descriptions of each data file.
- itfp2_year1_pufcsv
Dataset used for the "WIC ITFPS-2: Intention to Breastfeed" report and "WIC...
MD5:Explore Data31.97 MB - Year1 data - SAS, R, SPSS, STATAzip
The year IFTP2 1 zip file contains identical versions of year 1 csv data...
MD5:Explore Data51.54 MB - itfps2_year2_ampm_1to24_ana_pufcsv
Dataset containing unadjusted nutrients per food/supplement for the 1-month...
MD5:Explore Data141.13 MB - itfps2_year2_enrollto24m_pufcsv
Dataset containing interview data from enrollment to 24 months, measurement...
MD5:Explore Data42.45 MB - itfps2_year2_ampm_mn_1to24_pufcsv
Dataset containing selected nutrient densities for each completed recall by...
MD5:Explore Data9.39 MB - itfps2_year2_ampm_fg_1to24_pufcsv
Dataset containing foods/food groups consumed at each recall using the...
MD5:Explore Data13.6 MB - itfps2_year2_ampm_fm_1to24_pufcsv
Dataset containing reported eating occasions and foods/food groups consumed...
MD5:Explore Data36.64 MB - itfps2_year2_ampm_nut_1to24_pufcsv
Dataset containing selected nutrients for each completed recall, 1-24 months...
MD5:Explore Data6.47 MB - ITFP2 Year 2 Datasets in SAS, SPSS, STATA and Rzip
The year IFTP2 2 zip file contains identical versions of year 2 csv data...
MD5:Explore Data262.76 MB - itfps2_year3_30to36m_pufcsv
Dataset containing interview data from 30 to 36 months and 36 month...
MD5:Explore Data5.66 MB - itfps2_year3_ampm_36m_ana_pufcsv
Dataset containing unadjusted nutrients per food/supplement for the 36-month...
MD5:Explore Data20.17 MB - itfps2_year3_ampm_36m_tot_pufcsv
Dataset containing total daily nutrients for the 36-month, using the...
MD5:Explore Data1.75 MB - itfps2_year3_ampm_fg_36m_pufcsv
Dataset containing foods/food groups consumed at each recall at 36-months,...
MD5:Explore Data1.13 MB - itfps2_year3_ampm_mn_36m_pufcsv
Dataset containing selected nutrient densities for each completed recall by...
MD5:Explore Data1.22 MB - Year3 data - SAS, R, SPSS, STATAzip
The year IFTP2 3 zip file contains identical versions of year 3 csv data...
MD5:Explore Data46.75 MB - itfp2_year4_enrollto48m_pufcsv
Dataset containing enrollment to 48-month measurement data.
MD5:Explore Data49.92 MB - itfp2_year4_ampm_fg_1to48m_pufcsv
Dataset containing foods per recall for the 1-month through 48-month, using...
MD5:Explore Data16.34 MB - itfp2_year4_ampm_mn_1to48m_pufcsv
Dataset containing nutrients per meal, per recall for the 1-month through 48...
MD5:Explore Data11.86 MB - itfp2_year4_ampm_1to48_ana_pufcsv
Dataset containing total daily nutrients for the 1-month through 48-month,...
MD5:Explore Data180.71 MB - itfp2_year4_ampm_1to48_tot_pufcsv
Dataset containing unadjusted nutrients per food/supplement for the 1 month...
MD5:Explore Data17.3 MB - ITFP2 Year 4 Datasets in SAS, SPSS, STATA and Rzip
The year IFTP2 4 zip file contains identical versions of year 4 csv data...
MD5:Explore Data362.95 MB
Field | Value |
---|---|
Tags | |
Parent Record | |
Modified | 2023-10-03 |
Release Date | 2022-01-27 |
Frequency | Not Planned |
Identifier | e3b43307-fae3-4568-bf9d-250a0f9d213c |
Spatial / Geographical Coverage Area | POLYGON ((-133.52508544922 24.678217668638, -133.52508544922 51.721073365494, -61.894226074219 51.721073365494, -61.894226074219 24.678217668638)) POINT (-99.335632324219 40.003423893179) |
Publisher | USDA FNS Office of Policy Support |
Spatial / Geographical Coverage Location | United States |
Temporal Coverage | January 1, 2013 to December 31, 2018 |
License | |
Contact Name | USDA FNS OPS |
Contact Email | |
Public Access Level | Public |
Program Code | 005:040 - Department of Agriculture - National Research |
Bureau Code | 005:84 - Food and Nutrition Service |