LIFESCI 4W03 Lecture Notes - Lecture 3: Personal Digital Assistant, Barcode Reader, Software
28 Oct 2016
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Why: dietary assessment is time and resource consuming especially for large studies. Errors in: amount of food consumed, type of food consumed. Inter-interviewer variability: data entry into computer from diet records. 6 types of technologies identified in review: personal digital assistant (pda, cell phone, computer software, internet, camera, scan. Pda and cellphone apps allow for (cid:862)(cid:396)eal-ti(cid:373)e(cid:863) dieta(cid:396)y assess(cid:373)e(cid:374)t. Computer and internet-based software incorporates automated questions and photos for diet history (cid:395)uestio(cid:374)(cid:374)ai(cid:396)e, sta(cid:374)da(cid:396)dizi(cid:374)g i(cid:374)te(cid:396)(cid:448)ie(cid:449) p(cid:396)o(cid:272)ess (natio(cid:374)al ca(cid:374)(cid:272)e(cid:396) i(cid:374)stitute"s (cid:1005)(cid:1006)4 item diet history questionnaire) Barcode scanner apps (my fitness pal) increases accuracy of diet analysis. Technology-based diet analysis tends to be preferred by subject versus 24 diet recall. Ultimately, the choice of diet assessment technique used depe(cid:374)ds o(cid:374) : time to interview, time to enter data. If people being assessed: money resources, cognitive abilities, nutrition literacy level, technology-literacy level, access to technology, availability of valid ffqs.
