Reproducibility and validity of diet quality scores derived from food-frequency questionnaires

Yue, Yiyang; Yuan, Changzheng; Wang, Dong D.; Wang, Molin; Song, Mingyang; Shan, Zhilei; Hu, Frank B.; Rosner, Bernard; Smith‐Warner, Stephanie A.; Willett, Walter C.

doi:10.1093/ajcn/nqab368

Cited by 32 publications

(25 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As shown in earlier studies ( 22 ), it seems that this questionnaire provides reasonably valid measures of long-term dietary intakes. Also, some recent studies have shown that FFQ was a valid questionnaire for assessing dietary quality scores ( 25 ).…”

Section: Methodsmentioning

confidence: 99%

Association Between Dietary Total Antioxidant Capacity and Diet Quality in Adults

et al. 2022

View full text Add to dashboard Cite

BackgroundDiet quality is a major contributor to human health. In addition, antioxidants have a great contribution to several chronic conditions. The purpose of this study was to evaluate if dietary total antioxidant capacity (TAC) can be considered as a measure of diet quality in a Middle Eastern country.MethodsIn this cross-sectional study on 6,724 Iranian adults, we used a validated food frequency questionnaire (FFQ) to assess dietary intakes. Data derived from the FFQ was used to calculate dietary TAC and well-known diet quality scores including alternate healthy eating index (AHEI) and dietary diversity score (DDS). Dietary TAC was calculated based on the ferric reducing-antioxidant power (FRAP) values reported in earlier publications. AHEI and DDS have also been constructed based on previous publications. Cross-classification was used to examine the agreement between these measures.ResultsMean age and BMI of study participants were 36.89 ± 8.08 y and 24.97 ± 3.87 kg/m2, respectively. We found that individuals in the highest tertile of dietary TAC had higher scores of AHEI (57.53 ± 0.20 vs. 52.03 ± 0.20, P < 0.001) and DDS (5.56 ± 0.03 vs. 4.15 ± 0.03, P < 0.001) compared with those in the lowest tertile. Participants' distribution on the basis of the cross-classification analysis indicated that the classifications were in exact agreement for 42.6%, within an adjacent tertile for 33.05%, and in gross misclassification for 20% of individuals. When this was examined between dietary TAC and DDS, we found that exact agreement in the classifications was for 59.2% of participants. Notably, a very low proportion of gross misclassification was seen in this regard such that only 6% of participants were classified in the opposing tertiles, indicating additional support for a good agreement.ConclusionWe found that dietary TAC might be considered as a proper measure for the assessment of diet quality because it was well correlated with well-known measures of diet quality including DDS and AHEI scores.

show abstract

Section: Methodsmentioning

confidence: 99%

Association Between Dietary Total Antioxidant Capacity and Diet Quality in Adults

et al. 2022

View full text Add to dashboard Cite

show abstract

“…For example, the average Pearson correlation coefficients corrected for within-person weekly variation comparing SFFQ-measured intakes to those measured by multiple 7-d food records (7DDR) ranged from 0•45 for nuts to 0•85 for tea/coffee in the HPFS (25) . In addition, we recently validated SFFQ-measured PDI against the indices measured by 7DDR; the correlations were 0•63 for PDI, 0•78 for hPDI and 0•73 for uPDI in the NHS, and 0•65 for PDI, 0•74 for hPDI and 0•77 for uPDI in the HPFS (27) .…”

Section: Dietary Assessmentmentioning

confidence: 99%

Degree of adherence to plant-based diet and total and cause-specific mortality: prospective cohort study in the Million Veteran Program

Wang

Nguyen

et al. 2022

Public Health Nutr.

Self Cite

View full text Add to dashboard Cite

Objective: To examine the associations between adherence to plant-based diets and mortality. Design: prospective study. We calculated a plant-based diet index (PDI) by assigning positive scores to plant foods and reverse scores to animal foods. We also created a healthful PDI (hPDI) and an unhealthful PDI (uPDI) by further separate the healthy plant foods from less-healthy plant foods. Setting: the VA Million Veteran Program. Participants: 315,919 men and women aged 19 to 104 years who completed a food frequency questionnaire at the baseline. Results: We documented 31,136 deaths during the follow-up. A higher PDI was significantly associated with lower total mortality [hazard ratio (HR) comparing extreme deciles =0.75, 95% confidence interval (CI): 0.71 to 0.79, Ptrend <0.001]. We observed an inverse association between hPDI and total mortality (HR comparing extreme deciles =0.64, 95% CI: 0.61 to 0.68, Ptrend <0.001), whereas uPDI was positively associated with total mortality (HR comparing extreme deciles =1.41, 95% CI: 1.33 to 1.49, Ptrend <0.001). Similar significant associations of PDI, hPDI, and uPDI were also observed for CVD and cancer mortality. The associations between the plant-based diet indices and total mortality were consistent among African and European American participants, and participants free from CVD and cancer and those who were diagnosed with major chronic disease at baseline. Conclusions: A greater adherence to a plant-based diet was associated with substantially lower total mortality in this large population of veterans. These findings support recommending plant-rich dietary patterns for the prevention of major chronic diseases.

show abstract

“…Moreover, the use of a food frequency questionnaire is limited by the use of a fixed food list. Furthermore, different interpretations of questions regarding food items and the frequency of consumption by individuals can also be taken into consideration [ 63 , 64 ]. To overcome these limitations, trained interviewers helped participants to answer more accurately while completing the questionnaire.…”

Section: Discussionmentioning

confidence: 99%

“…To overcome these limitations, trained interviewers helped participants to answer more accurately while completing the questionnaire. Although the method is not free from measurement error, previous studies using repeated and mixed-method dietary assessment confirmed the utility of food frequency questionnaires in exploring associations between diet and chronic disease risk [ 64 , 65 ]. The use of a simple scoring index (Ad-LC WCRF/AICR Score) should also be considered a potential limitation of the study.…”

Section: Discussionmentioning

confidence: 99%

Lung Cancer Risk in Men and Compliance with the 2018 WCRF/AICR Cancer Prevention Recommendations

et al. 2022

View full text Add to dashboard Cite

Lung cancer is the most common and deadly form of cancer worldwide, especially in men. The 2018 World Cancer Research Fund/American Institute for Cancer Research (WCRF/AICR) updated cancer prevention recommendations, and a standard scoring system (2018 WCRF/AICR Score) was published. The purpose of this study was to develop the adapted version of the 2018 WCRF/AICR Score with respect to lung cancer prevention recommendation (Ad-LC WCRF/AICR Score) and to examine the association between lung cancer risk in men and the Ad-LC WCRF/AICR Score as well as its single components. A case–control study was conducted among 439 men aged 45–80 years (187 controls, 252 primary lung cancer cases). Lifestyle and dietary data were collected with a questionnaire including the 62-item food frequency questionnaire (FFQ-6®). The Ad-LC WCRF/AICR Score was used as a categorized and continuous variable. Odds ratios (ORs) and 95% confidence intervals (95% CIs) for lung cancer risk were calculated with the partly and fully adjusted model. One component of the score was independently associated with a lower risk of lung cancer in men, regardless of the set of confounders used. In the fully adjusted model following the recommendation “Limit smoking” was associated with a lower risk of lung cancer—in the never smokers by 87% (OR: 0.13; 95% CI: 0.04–0.37; p = 0.0002) and in the moderate smokers by 45% (OR: 0.55; 95% CI: 0.33–0.91; p = 0.0189) compared with the heavy smokers as a reference. By adding the single components making up the Ad-LC WCRF/AICR Score, the combination of three components or more, reducing the risk of lung cancer compared to lower compliance as a reference by 45% to 78% and by 39% to 66% for intermediate compliance (except two models out of seven) and higher compliance, respectively. In the fully adjusted model, the risk of lung cancer for the total Ad-LC WCRF/AICR Score was lower by 47% (OR: 0.53; 95% CI: 0.32–0.88; p = 0.0129) in higher compliance with the score compared to those with the lower compliance. Each one-point increase in the Ad-LC WCRF/AICR Score reduced lung cancer risk by 34% (OR: 0.66; 95% CI: 0.45–0.95; p = 0.0267). The results support previous evidence that limiting smoking reduces the risk of lung cancer in men. It also provides an insight into cancer research by showing that following the combined 2018 cancer prevention recommendations related to diet, lifestyle and body fatness was associated with a lower risk of lung cancer in men.

show abstract

Reproducibility and validity of diet quality scores derived from food-frequency questionnaires

Cited by 32 publications

References 58 publications

Association Between Dietary Total Antioxidant Capacity and Diet Quality in Adults

Association Between Dietary Total Antioxidant Capacity and Diet Quality in Adults

Degree of adherence to plant-based diet and total and cause-specific mortality: prospective cohort study in the Million Veteran Program

Lung Cancer Risk in Men and Compliance with the 2018 WCRF/AICR Cancer Prevention Recommendations

Contact Info

Product

Resources

About