A comparison of the Petra food recording system with the conventional weighed inventory technique

Publisher Website
Google Scholar
Abstract
This study was designed to test the efficacy of the Portable Electronic Tape Recording Automated (PETRA) scale compared to a digital scale (SOEHNLE) and diary for the collection of dietary data in a large field trial. One hundred and fifty subjects were randomly selected from the Household Valuation List, Northern Ireland, and 102 eligible subjects (aged 16–64 years) were asked to keep a seven‐day dietary record. The cooperating sample (n=80) was divided into cells by sex, age and social class. PETRA and SOEHNLE scales were then randomly allocated to equal numbers of subjects within each cell. Failure to complete the seven‐day record was marginally greater using the SOEHNLE scale but the effect was not statistically significant. Furthermore, there were no statistically significant differences in recorded energy and nutrient intakes between PETRA‐ and SOEHNLE‐subjects within any sex, age or social class grouping. From questionnaire data, the PETRA system was found to surpass the traditional system in terms of ‘user friendliness’; but at an added cost in time spent by the field team.

This publication has 2 references indexed in Scilit: