Related Experiment Video
Updated: May 7, 2026
04:46
'Boden Food Plate': Novel Interactive Web-based Method for the Assessment of Dietary Intake
Published on: September 18, 2018
Measuring diet cost at the individual level: a comparison of three methods
P Monsivais1, M M Perrigue, S L Adams
11] UKCRC, Centre for Diet and Activity Research, University of Cambridge, Institute for Public Health, Cambridge, UK [2] Department of Public Health and Primary Care, University of Cambridge, CB1 8RN, UK [3] School of Public Health, University of Washington, Seattle, WA, USA.
European Journal of Clinical Nutrition
|September 19, 2013
Summary
Estimating individual diet cost using supermarket prices with diet diaries or food frequency questionnaires (FFQs) is more reliable than household food spending for nutrition economics. These methods better reflect food consumed and economic influences on diet.
Area of Science:
- Nutrition Economics
- Dietary Assessment Methods
- Public Health Research
Background:
- Household food spending data are inadequate for population-level nutrition economics studies.
- Accurate individual diet cost estimation is crucial for understanding economic determinants of diet quality and health outcomes.
Purpose of the Study:
- To compare three methods for estimating individual diet cost.
- To assess the suitability of different dietary assessment tools combined with price data for economic nutrition research.
Main Methods:
- Adults (n=164) completed 4-day diet diaries and a food frequency questionnaire (FFQ).
- Diet costs were estimated using: (1) diet diaries/expenditures, (2) diet diaries/supermarket prices, and (3) FFQs/supermarket prices.
- Agreement was assessed via correlations and limits of agreement; income associations were analyzed.
Main Results:
- Mean diet costs varied: Method 1 ($10.04), Method 2 ($8.28), and Method 3 ($7.66).
- Method 3 (FFQs/supermarket prices) showed the strongest correlation between energy intake and cost (r²=0.66).
- Cost estimates were significantly associated with household income.
Conclusions:
- Method 1 (diet diaries/expenditures) is least suitable for diet and health research due to weak association with food intake.
- Combining supermarket prices with dietary assessment tools (diet diaries or FFQs) provides more accurate individual diet cost estimates.
- Individual diet cost derivation offers insights into economic factors influencing food choice, diet quality, and health.
Related Concept Videos
01:30Measurement of Bioavailability: Pharmacokinetic Methods
Pharmacokinetics is a vital branch of pharmacology that examines how drugs are absorbed, distributed, metabolized, and excreted by the body. Two key methodologies in pharmacokinetics are plasma drug concentration studies and urinary drug excretion analyses, both of which provide critical insights into a drug's therapeutic efficacy and bioavailability.Plasma Drug Concentration-Time StudiesPlasma drug concentration-time studies involve analyzing blood samples at specific intervals to quantify...
01:20Measurement of Bioavailability: Pharmacodynamic Methods
Pharmacodynamic methods provide insights into a drug's effects on physiological processes over time and play a crucial role in understanding bioavailability and therapeutic efficacy. These methods can be broadly classified into acute pharmacological and therapeutic response approaches, each with distinct mechanisms and applications.The acute pharmacological response method directly correlates a drug's physiological effects, such as ECG or pupil diameter changes, to its time course in the body.
00:54Ratio Level of Measurement
The way a set of data is measured is called its level of measurement. Correct statistical procedures depend on a researcher being familiar with levels of measurement. For analysis, data are classified into four levels of measurement—nominal, ordinal, interval, and ratio.
A set of data measured using the ratio scale takes care of the ratio problem and provides complete information. Ratio scale data are like interval scale data, except they have a zero point and ratios can be calculated. For...
A set of data measured using the ratio scale takes care of the ratio problem and provides complete information. Ratio scale data are like interval scale data, except they have a zero point and ratios can be calculated. For...
01:08Titrimetric Methods: Types and Commonly Used Strategies
In chemistry, titrimetric methods are broadly classified into three types: volumetric, gravimetric, and coulometric. Volumetric titrations involve measuring the volume of a titrant of known concentration that is required to react completely with an analyte. In gravimetric titrations, the standard solution reacts with the analyte to form an insoluble precipitate, which is filtered, dried, and weighed. In coulometric titrations, current is applied to an electrochemical reaction until the reaction...
01:27Bioavailability Study Design: Absolute Versus Relative Bioavailability
Bioavailability is a crucial pharmacokinetic parameter that quantifies the proportion of an administered drug that reaches the systemic circulation and is available for therapeutic action. Regulatory agencies mandate the assessment of bioavailability, typically measured as the area under the drug plasma concentration-versus-time curve (AUC), to ensure the efficacy and safety of pharmaceutical products. These evaluations are categorized as absolute and relative bioavailability studies.Absolute...
01:23Mechanistic Models: Compartment Models in Individual and Population Analysis
Mechanistic models are utilized in individual analysis using single-source data, but imperfections arise due to data collection errors, preventing perfect prediction of observed data. The mathematical equation involves known values (Xi), observed concentrations (Ci), measurement errors (εi), model parameters (ϕj), and the related function (ƒi) for i number of values. Different least-squares metrics quantify differences between predicted and observed values. The ordinary least squares (OLS)...