How does NDSR compare to the ASA24?
NDSR is a PC-based dietary analysis program for 24-hour dietary recall collection and analysis of food records, menus, and recipes. Collection of dietary recalls is carried out by an interviewer who is trained in the use of NDSR. The dietary recalls may be collected over the telephone or in-person.
The ASA24 is a web-based dietary analysis program for 24-hour dietary recall and food record collection. It is designed for self-administration, and thus requires the study participant have internet access and some level of literacy and familiarity with computers or mobile devices.
NDSR and ASA24 differ in a variety of important ways beyond platform and mode of use. To summarize, NDSR has more foods, nutrients, food pattern/group data, and quality assurance capabilities than ASA24. Participant burden, as measured by duration of interview, is also lower. The ASA24 may be less costly because it is self-administered and the program is available for use at no charge.
The following documents provide greater detail regarding the differences and similarities of NDSR and ASA24 for 24-hour dietary recall collection:
Comparison of NDSR vs ASA24 for 24-hour Dietary Recall Collection
Comparison of Nutrients, Nutrient Ratios and Other Food Components in NDSR and ASA24
Comparison of Food Patterns/Group Data Available in NDSR and ASA24 Output Files
How does NDSR compare to other dietary analysis software programs?
NDSR is unique in a number of ways, some of which are highlighted below:
- Allows for direct data entry of 24-hour dietary recalls using a multiple-pass approach to recall collection. Interview prompts are provided to both expedite and standardize the recall interview.
- Includes a standard Introduction Script that can be customized for each project.
- Includes interview prompts in both English and Spanish and over 300 Hispanic foods.
- Includes a Dietary Supplement Assessment Module so that nutrient intake from both food and supplemental sources may be quantified. The module is supported by a database that includes over 2,000 dietary supplements (pdf). A ‘missing product’ feature in the software allows the user to add products to the database.
- Is supported by a comprehensive, complete, and current food and nutrient database.
- Provides reports and output files to meet the needs of researchers.
- Offers a comprehensive two-day dietary interviewer training workshop.
The National Nutrient Databank Committee maintains a directory that provides key information about dietary analysis software. Visit the directory for a head-to-head comparison of programs.
Has NDSR been validated?
NDSR is designed for collecting 24-hour dietary recalls and analyzing food records. The validity of these approaches to dietary intake assessment have been assessed in numerous studies, some of which involved the collection/analysis of dietary recalls and records using NDSR.
One suggested resource for learning about the validity of 24-hour dietary recalls and foods records is Chapter 3 (24-Hour Recall and Food Record Methods) in the text Nutritional Epidemiology (third edition, 2013) by Walter Willett.
Another resource for locating validation studies involving specific demographic groups (e.g. children, African Americans, etc.) is the National Cancer Institute’s Dietary Assessment Calibration/Validation Register.
The National Collaborative on Childhood Obesity Research (NCCOR) Measures Registry also provides references on the validity of various dietary assessment measures, including 24-hour dietary recalls for children.
NDSR has been used for dietary intake assessment in hundreds of nutrition related studies. A compilation of papers published by NDSR users is available.
What is the NCC Flavonoid and Proanthocyanidin Provisional table and how can it be used?
Since 2005, NCC has maintained the NCC Flavonoid and Proanthocyanidin Provisional table. In the 2017 version of this table, values for one or more of 27 flavonoids* are provided for 844 foods in the NCC Food and Nutrient Database. Additionally, values are provided for one or more of six classes of proanthocyanidins* for the 792 foods. Nutrient values in the provisional table are reported as mg/100g edible portion of food.
Nutrient values for the table have been compiled from the USDA Database for the Flavonoid Content of Selected Foods, Release 3.2 (2015), the USDA Database for the Proanthocyanidin Content of Selected Foods, Release 2 (2015), as well as from scientific literature.
The NCC Flavonoid and Proanthocyanidin Provision Table may be linked to foods in the NDSR component/ingredient output file. By carrying out this linkage, one may estimate intake of the flavonoids and proanthocyanidins in the Table, recognizing that composition data is missing for many foods, and therefore intake may be underestimated to some extent.
The current price for the 2017 Flavonoid and Proanthocyanadin Provisional table is $950. Please contact NCC for more information or if you are interested in licensing the table.
*Values are missing for some of the flavonoids/proanthocyanidins in the provisional table. Many of these values are based on analytical data and NCC imputed values for only some categories of food, for example cooked and corresponding canned vegetables were assigned similar values.