Para-aminobenzoic acid used as a marker for completeness of 24 hour urine: assessment of control limits for a specific HPLC method

Article Abstract:

Research of 24 hour urine completion suggests that the aged should have an advanced dosage schedule for para-aminobenzoic acid (PABA). The colorimetric diazocoupling method was compared with an HPLC method, with colimetry giving a substantially higher PABA recovery than HPLC. PABA recoveries were lower with the recommended schedule in comparison with the advanced dosage schedule. Younger and older subjects exhibited similar PABA recoveries in 24 hour urine under the HPLC method.

Analysis, Usage, High performance liquid chromatography, Urine, Urinalysis

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Validity of DISHES 98, a computerized dietary history interview: energy and macronutrient intake

Article Abstract:

This article evaluates a nutritional epidemiology study's ability to accurately measure dietary intake. Topics include a description of the study's design, data analysis, and computerized interviewing.

Germany, Statistical Data Included, Research, Evaluation, Technology application, Medical history taking, Nutrition, Nutritional assessment, Food habits, Health surveys, Nutrition surveys, Statistics (Mathematics)

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