Calibration of the Dietary Questionnaire for a Multiethnic Cohort in Hawaii and Los Angeles

Stram, Daniel O.; Hankin, Jean H.; Wilkens, Lynne R.; Pike, Malcolm C.; Monroe, Kristine R.; Park, Sohee; Henderson, Brian E.; Nomura, Abraham M. Y.; Earle, Maj E.; Nagamine, Faye S.; Kolonel, Laurence N.

doi:10.1093/oxfordjournals.aje.a010214

Cited by 339 publications

(421 citation statements)

References 24 publications

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“…The results suggest that the SWHS FFQ is reasonably comprehensive, reproducible and can capture the major nutrient and food group intake relatively accurate among women in urban Shanghai women. The performance of the FFQ is as good as, if not better than, many FFQs that have been used in epidemiological studies (Willett et al, 1985;Goldbohm et al, 1994;Kaaks et al, 1997;Margetts and Pietinen, 1997;Riboli et al, 1997;Willett & Lenart, 1998;Martinez et al, 1999;Mayer-Davis et al, 1999;Flagg et al, 2000;Hansson et al, 2000;Jain & McLaughlin, 2000;Stram et al, 2000).…”

Section: Discussionmentioning

confidence: 86%

Validity and reproducibility of the food frequency questionnaire used in the Shanghai Women's Health Study

et al. 2003

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To evaluate the validity and reliability of the food frequency questionnaire (FFQ) used in the Shanghai Women's Health Study (SWHS), 200 SWHS participants were recruited for a dietary calibration study. Study participants completed an FFQ at baseline and 24-h dietary recalls (24-HDR) twice per month consecutively for 12 months. At the end of the study, a second FFQ was administered. Of the 200 study participants, 196 completed 24 or more days of 24-h dietary recalls, 191 completed two FFQs from whom the results of this report were based. The FFQ included the foods that accounted for 86% of the foods recorded in the 24-HDR surveys. Validity of the FFQ was evaluated by comparing intake levels of major nutrients and foods obtained from the second FFQ with those derived from the multiple 24-HDR. The median intake for major nutrients, rice, poultry and meat derived from the second FFQ and the 24-HDR was similar, with the differences ranging from 1.3 to 12.1%. The FFQ tended to overestimate the intake level of total vegetables and total fruits, and the differences were explained mainly by over-reporting seasonal vegetables and fruits consumption in the FFQ. Nutrient and food intake assessed by the FFQ and the multiple 24-HDR correlated very well, with the correlation coefficients being 0.59-0.66 for macronutrients, 0.41-0.59 for micronutrients, and 0.41-0.66 for major food groups. The reliability of the FFQ was assessed by comparing the correlation and median intake of nutrients and food groups obtained from the two FFQs that were administered approximately 2 y apart. The median intake levels for selected nutrients and food groups derived from the two FFQs were similar with differences below 10%. At the individual level, the intake levels of these dietary variables obtained from two FFQs also correlated well. When nutrient and food group intakes were categorized into quartiles, FFQ and 24-HDR produced exact agreement rates between 33 and 50%. Misclassification to adjacent quartile was common, ranging from 34-48%, while misclassification to an extreme quartile was rare (1-6%). These data indicate that the SWHS FFQ can reliably and accurately measure usual intake of major nutrients and food groups among women in Shanghai.

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Section: Discussionmentioning

confidence: 86%

Validity and reproducibility of the food frequency questionnaire used in the Shanghai Women's Health Study

et al. 2003

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“…Compared with the correlation coefficients based on absolute nutrient value, the correlation coefficients of nutrient densities was higher than those of absolute intakes. Stram et al (2000) stated that nutrient densities generally have better correlations than do absolute values of nutrients.…”

Section: Discussionmentioning

confidence: 99%

Validation and reproducibility of food frequency questionnaire for Korean genome epidemiologic study

et al. 2007

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Objective: To evaluate validity and reliability of the food-frequency questionnaire (FFQ) developed for the Korean Genome Epidemiologic Study (KoGES). Methods: FFQ was administered twice at 1-year interval (first FFQ (FFQ1) at the beginning and second FFQ (FFQ2) at the end of the study) and diet records (DRs) were collected for 3 days during each of the four seasons from December 2002 to May 2004 for those who attended the health examination center. At the end of the study period, we collected the 12-day DRs of 124 participants. The nutrient intakes from the DRs were compared with both FFQ1 and FFQ2. Results: The intakes of energy and some nutrients estimated from FFQ1 and FFQ2 were different from those assessed by the DRs. Especially, the consumption of carbohydrates was higher in FFQ1 and FFQ2 than in the DRs. The de-attenuated, age, sex and energy intake adjusted correlation coefficients between the FFQ2 and the 12-day DRs in Korean population ranged between 0.23 (Vitamin A) and 0.64 (carbohydrate). The median for all nutrients was 0.39. The correlations were similar when we compared nutrient densities of both methods. Joint classification of calorie-adjusted nutrient intakes assessed by FFQ2 and 12-day DRs by quartile ranged from 25.8% (vitamin A) to 39.5% (carbohydrate, iron) for exact concordance. Except vitamin A, the proportion of subjects classified into distant quartile was less than 7% in all nutrients. The median of correlations between the two FFQs 1 year apart were 0.45 for all nutrient intakes and 0.39 for nutrient densities. Conclusions: We conclude that the FFQ we have developed appears to be an acceptable tool for assessing the nutrient intakes in this population. Further studies for calibration of the FFQ collected from multicenters participating in the KoGES are needed.

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“…Nevertheless, this study had several strengths. We used a validated FFQ 16 supported by a comprehensive food composition database 17 . The blood collection was timed with an ovulation detection kit and ovulations were confirmed by measurements of Prog 15 .…”

Section: Discussionmentioning

confidence: 99%

Alcohol and dietary fibre intakes affect circulating sex hormones among premenopausal women

Maskarinec

Morimoto

Takata

et al. 2006

Public Health Nutr.

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Background: The association of alcohol and fibre intake with breast cancer may be mediated by circulating sex hormone levels, which are predictors of breast cancer risk. Objective: To evaluate the relationship of alcohol and dietary fibre intake with circulating sex hormone levels among premenopausal women. Methods: A total of 205 premenopausal women completed a validated food-frequency questionnaire at baseline and after 2 years; blood samples taken at the same time were analysed for circulating sex hormone concentrations, including oestrone (E 1 ), oestradiol (E 2 ), free E 2 , progesterone, androstenedione and sex hormone-binding globulin, by radioimmunoassay. We used mixed models to estimate least-square means of sex hormone concentrations for alcohol intake categories and quartiles of dietary intake. Results: After adjustment for covariates, alcohol consumption was moderately associated with higher circulating oestrogen levels; those who consumed more than one drink per day had 20% higher E 2 (P trend ¼ 0.07) levels than non-drinkers. In contrast, higher dietary fibre intake was associated with lower serum levels of androstenedione (2 8% between the lowest and highest quartiles of intake, P trend ¼ 0.06), but not oestrogens. Similarly, consumption of fruits (2 12%, P trend ¼ 0.03), vegetables (2 9%, P trend ¼ 0.15) and whole grains (2 7%, P trend ¼ 0.07) showed inverse associations with androstenedione levels. Conclusions: The consistency of the observed differences in sex hormone levels associated with alcohol and fibre-rich foods indicates that these nutritional factors may affect sex hormone concentrations and play a role in breast cancer aetiology and prevention.

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Calibration of the Dietary Questionnaire for a Multiethnic Cohort in Hawaii and Los Angeles

Cited by 339 publications

References 24 publications

Validity and reproducibility of the food frequency questionnaire used in the Shanghai Women's Health Study

Validity and reproducibility of the food frequency questionnaire used in the Shanghai Women's Health Study

Validation and reproducibility of food frequency questionnaire for Korean genome epidemiologic study

Alcohol and dietary fibre intakes affect circulating sex hormones among premenopausal women

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