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Validation Information: Pre-coded Food Record Form

Rodriguez 2014

New pre-coded food record form validation

Introduction: For some research fields, simple and accurate food intake quantification tools are needed. The aim of the present work was to design a new self-administered and pre-coded food intake record form and assess its reliability and validity when quantifying the food intake of adult population, in terms of food or food-groups portions.

Material and Methods: First of all, a new food-record form was designed, which included food usually consumed and which sought to be easy-to-use, short, and intuitive. The validation process consisted in analyzing both the reliability and validity of the tool’s design in a representative population sample (n=330; age: 19-77). Reliability was checked by comparing (Spearman’s CC, ICC) food intake (mean value of portions) between two series of five-day food records in a one-month period. Validity was checked by comparing the food intake mean value of two records to results obtained from a gold standard (24-hour recall).

Results: 73.7% of the food from the record presented correlations higher than 0.5 for reliability (ICCs from 0.38 to 0.94) and 97.4% showed higher values than 0.7 and 68.4% than 0.8 for validity (ICCs from 0.28 to 0.97).

Conclusions: The solid correlation coefficients and ICCs obtained indicate that this is a reliable tool for the quantification of food intake in adults in terms of food or food group portions.

Web Link

Validation Information

Year of Publication

Tool Information

Dietary Exposure Measured
Food Groups
Tool Type
Food Diary Estimated
Timeframe Tool Measures info
1 Day
Portion Size Measures info
Domestic food portion sizes are detailed on the back of the tool. These were standardised by a nutritionist-dietitian team.
Reporting Method info
Format info
Supplements Measured
Not reported
Administration Method info

Study Information

Study Location
Vitoria-Gasteiz, Spain
Associated Nutrient Database
Not reported
Comparator Validated Against
24hr Recall


Sample Size
Age of Population

Range: 19-77 years

Mean: 45 years

Other Notable Characteristics

Total number of nutrients validated: 0 info

Not all of the nutrients validated in the validation studies are included in the table below, as statistical data was only selected to be displayed for a number of nutrients, this included:

  • Energy
  • Fat
  • Saturated Fat
  • Mono-unsaturated Fat
  • Poly-unsaturated Fat
  • Carbohydrates
  • Protein
  • Sugar
  • Non‐starch polysaccharides(NSP)
  • Sodium
  • Calcium
  • Iron
  • Zinc
  • Retinol
  • Folate
  • Folic Acid
  • Vitamin B12
  • Vitamin C
  • Fruit & Vegetables
  • Urinary Nitrogen

To find information on the other validated nutrients please read the validation study.

  • Macronutrients: 0
  • Micronutrients: 0
Comparator Lifestage Sex Nutrient Measured info Mean Difference Standard Deviation info Correlation Coefficient info Cohen's Kappa Coefficient Percentage Agreement Percentage Agreement Categories info Lower Limits of Agreement Upper Limits of Agreement
24hr Recall Adults Both Vegetables (portions/day) 0.04 0.83 (S); 0.87 (ICC)
Fruit and Vegetables (portions) 0.04 0.89 (S); 0.93 (ICC)

Some results have been calculated using statistical techniques based on the published data.

For further information on statistical terms click on Statistical tests used in validation studies

All correlations coefficients in the table are unadjusted unless stated otherwise. For adjusted correlation coefficients and other statistical methods used in the study e.g. paired t-tests, please read the validation articles.

  • # Adjusted
  • † Energy adjusted.
  • ‡ For loge-transformed, energy-adjusted nutrient intakes.
  • ^ Adjacent included.
  • ᵟ Participants provided identical responses.
  • (w) = Weighted.

Rodríguez VM, Elbusto-Cabello A, Alberdi-Albeniz M, De la Presa-Donado A, de Mendiola FG-P, Portillo-Baquedano MP, et al. Validación de un nuevo registro alimentario precodificado. Revista Española de Nutrición Humana y Dietética. 2014;18(3):118-26.