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Titre : | Ratios of Food Amounts across Three Portion Size Categories on a Food Frequency Questionnaire in Men and Women (2020) |
Auteurs : | Minji Kang ; Song-Yi Park ; Carol J. Boushey ; Lynne R. Wilkens ; Loïc Le Marchand ; Laurence N. Kolonel ; Suzanne P. Murphy ; Hee-Young Paik |
Type de document : | Article |
Dans : | Journal of the academy of nutrition and dietetics (Vol. 120, n° 2, February 2020) |
Article en page(s) : | p. 258-269 |
Note générale : | doi:10.1016/j.jand.2019.08.175 |
Langues: | Anglais |
Descripteurs : |
HE Vinci Femmes ; Hommes ; Taille de portion |
Mots-clés: | Questionnaire sur la fréquence de l'alimentation ; Rappel alimentaire sur 24 heures ; Étude de cohorte multiethnique |
Résumé : |
Background:
For some quantitative food frequency questionnaire (QFFQ) items, data may be insufficient to set gram weights for multiple portion size (PS) categories. Ratios of food amounts across PS categories may be used to quantify these PS for less frequently consumed food items. Objective: To explore the ratios of food amounts reported in 24-hour dietary recalls (24HDRs) by a sample of participants in a cohort study who chose the A (smallest) or C (largest) PS category on the QFFQ, relative to the food amounts for those who chose the B PS category. Design: This study was conducted as a cross-sectional design. Participants/setting: Data were from participants (n=2,360) who completed three 24HDRs and the QFFQ in a calibration study of the Multiethnic Cohort Study in 1994-1997. Main outcome measures: Median food amounts were calculated from 24HDRs for participants who selected each PS category (A, smallest; B; and C, largest) of items on the QFFQ. A-to-B and C-to-B ratios were computed if reported by five or more people in the 24HDRs: A-to-B ratios for 68 items (men) and 88 items (women); C-to-B ratios for 93 items (men) and 79 items (women). Statistical analyses performed: The t test was used to compare the mean A-to-B ratios and C-to-B ratios as preset on the QFFQ with those from the 24HDRs and to examine sex differences. Analysis of variance was used to compare the mean ratios among race and ethnicity groups. Results: Mean A-to-B and C-to-B ratios were 0.71±0.15 and 1.45±0.35 in men and 0.71±0.15 and 1.44±0.40 in women based on the 24HDRs. Compared with the original QFFQ PS (A-to-B ratio=0.5±0.07; C-to-B ratio=1.8±0.30), the ratios were closer to 1 both in men and women (P Conclusions: These results provide guidance on appropriate ratios to use to set values for small and large PS categories on a QFFQ, particularly for items with insufficient information on usual PS. |
Disponible en ligne : | Oui |
En ligne : | https://login.ezproxy.vinci.be/login?url=https://www.sciencedirect.com/science/article/pii/S2212267219313310 |