Evaluation of a Brief Telephone Questionnaire to Estimate Fruit and Vegetable Consumption in Diverse Study Populations

Serdula, Mary K.; Coates, Ralph J.; Byers, Tim; Mokdad, Ali H.; Jewell, Scott D.; Chávez, Noel; Mares‐Perlman, Julie A.; Newcomb, Polly A.; Ritenbaugh, Cheryl; Treiber, Frank A.

doi:10.1097/00001648-199309000-00012

Cited by 194 publications

(97 citation statements)

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“…However, in the specifi c case of fruit and vegetable intake, our results on the reproducibility and validity of the VIGITEL indicators are similar to those obtained in the United States by another telephone-based surveillance system. 10,12 In conclusion, the indicators of food and beverage intake employed by the VIGITEL system seem reproducible and accurate. Maintaining this system operational in years to come will supply the country with a useful instrument for evaluating public policies for promotion of a healthy diet and for control of diet-related nontransmissible chronic diseases.…”

Section: Discussionmentioning

confidence: 80%

“…The use of only three daily recalls as a gold-standard may have underestimated the validity of frequency questionnaires employed in VIGI-TEL, given that the measures obtained in frequency questionnaires refer to the subjects' usual diet whereas daily recalls only estimate the food intake in few and limited days. 10 In any case, an increase in the reference period of daily recalls would likely be unfeasible, and could in fact compromise the quality of individual responses. Carrying out at least three 24 hour recalls in different days of the week is the procedure most widely used as a reference method for the validity evaluation of food frequency questionnaires.…”

Section: Discussionmentioning

confidence: 99%

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Validade de indicadores do consumo de alimentos e bebidas obtidos por inquérito telefônico

et al. 2008

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OBJECTIVE:To evaluate the reproducibility and validity of data on food and beverage intake obtained by means of a telephone-based surveillance system. METHODS:Reproducibility and validity analyses were carried out in two random subsamples (n=112 and n=119, respectively) of the total sample (N=2,024) of adults (≥18 years) studied by the system in 2005 in the municipality of São Paulo, Southeastern Brazil. Indicators evaluated included protective factors (daily or almost daily intake of fruit and vegetables) and risk factors (daily or almost daily intake of soft drinks, frequent intake of foods containing saturated animal fat, and abusive intake of alcoholic beverages) for the development of chronic diseases. Reproducibility was studied by comparing the results of the original telephonic interview with those of another interview carried out 7-15 days later. Validity was analyzed by comparing the results of the telephone interview with those of three 24-hour recalls (our gold-standard) carried out up to 5 days following the original interview. RESULTS:The frequency of the studied indicators remained relatively constant between the fi rst and second telephone interviews, with kappa coeffi cients ranging from 0.57 to 0.80, indicating good reproducibility for all indicators. In relation to the gold standard, there was a trend towards overestimating the frequency of intake of protective foods, but of foods associated with increased risk of chronic diseases. Sensitivity and specifi city were high for indicators of consumption of risk-associated foods (close to 80%), and variable in the case of protective foods (42% to 80%). CONCLUSIONS:The evaluation showed evidence of good reproducibility and adequate validity for most indicators employed in the system, which indicates that maintaining this system operational in coming years will provide a useful instrument for evaluating public policies for the promotion of a healthy diet and for control of non-communicable chronic diseases with a dietary component in Brazil.

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Section: Discussionmentioning

confidence: 80%

Section: Discussionmentioning

confidence: 99%

Validade de indicadores do consumo de alimentos e bebidas obtidos por inquérito telefônico

et al. 2008

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“…While a study comparing brief and detailed questionnaires on separate occasions found both to be valid measures of fruit and vegetable intake 35 , it may be useful to apply our different methods of measuring fish consumption on separate occasions to more appropriately assess the comparative validity and reliability.…”

Section: Discussionmentioning

confidence: 99%

Do aggregates of multiple questions better capture overall fish consumption than summary questions?

Mina

Fritschi

Knuiman

2008

Public Health Nutr.

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Objective: To compare intake estimates, validity and reliability of two summary questions to measure fish consumption with information from a detailed semiquantitative food-frequency questionnaire (FFQ) on fish consumption. Design: Population-based, cross-sectional study. Participants completed an FFQ and provided blood samples for erythrocyte membrane eicosapentaenoic acid (EPA) analysis. Aggregate measures of consumption of fresh/frozen/canned fish (fresh fish) and smoked/salted/dried fish (preserved fish) were generated from the FFQ and were compared with responses to the summary questions regarding intakes of similar items. Both methods were tested for validity, using correlation and linear regression techniques with EPA, and retest reliability. Setting: Perth metropolitan area, Western Australia. Subjects: One hundred and nine healthy volunteers of both sexes, aged 21-75 years. Results: The summary fresh fish measure underestimated frequency and grams per week given by the aggregate question by about 50%, while estimates from the summary preserved fish measure were approximately three times that of the aggregate measure. Multiple linear regression analysis suggested that the aggregates accounted for more of the variation in EPA levels, but the difference was minimal. Intra-class correlations confirmed that both methods were reliable. Conclusions: Our study indicates that extensive questioning results in different absolute intakes of fish compared with brief questioning, but does not add any information if ranking individuals according to overall consumption of fish. Keywords Epidemiological methodsFatty acids Omega-3 Questionnaires Reproducibility of results Validation studiesFish consumption has been suggested as a protective factor for the development of various cancers; however, results from studies investigating this association have been inconsistent, ranging from statistically significant associations 1,2 to no clear association at all 3,4 . Possible reasons for this could be either a lack of detail collected by questionnaires used to measure fish consumption and therefore the failure to accurately capture the fish consumption of study participants, or a tendency for investigators to use a single measure to represent overall fish intake in statistical modelling despite having collected detailed information on the various types of fish and seafood consumed. However, there is no published evidence that the distinction among types and styles of fish items is important if ultimately the research question being asked is whether fish, as a food group, has a protective effect on the development of disease.We recently examined data collected as part of a large population-based case-control study for an association between fresh and preserved fish consumption and prostate cancer (Mina K, Fritschi L, Johnson KC, The Canadian Cancer Registries Epidemiology Research Group, 2007, unpublished). Information on fish intake was collected by means of two questions about frequency of consumption of a given am...

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“…This was the ®rst in a series of studies from a larger project to investigate the development of improved methods to assess dietary intake. This line of research arose from our previous studies on dietary assessment methods with various populations which identi®ed techniques for improving the collection and analysis of dietary data (Beaton et al, 1997;Aickin & Ritenbaugh, 1991;Serdula et al, 1993;Taren et al, 1990Taren et al, , 1993Taren, 1994;Chen & Taren 1995;Szathmary et al, 1987;Ritenbaugh et al, 1997). These studies led us to conclude that there was also a need to take into account the psychological pro®les of subjects to decrease the degree to which energy intake is under-reported.…”

Section: Introductionmentioning

confidence: 99%

The association of energy intake bias with psychological scores of women

et al. 1999

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Objective: Assess the association between reporting bias of dietary energy intake and the behavioral and psychological pro®les in women. Design: At baseline a series of questionnaires were administered to 37 women, (the Marlowe-Crowne Social Desirability Scale, Weinberger Adjustment Inventory (WAI), the Eating Disorder Inventory (EDI), the Restraint Scale and Sorensen-Stunkard's silhouettes). Subjects received training on how to record dietary records. Subjects recorded three days of dietary records to measure energy intake (EI) during a study to determine total energy expenditure (TEE) using doubly labeled water. Reporting accuracy (RA EIaTEE 6 100) was determined for each subject. Statistical analysis of the data used a mixed effects model accounting for within subject variability to determine if the psychological scores were associated with reporting accuracy. Setting and subject: Women were recruited with local advertisements in Tucson, Arizona. The women had a mean ( AE 1 s.d.) age of 43.6 AE 9.3 yrs, body mass index (BMI) of 28.7 AE 8.5 kgam 2 and total body fat (%TBF) of 31.9 AE 7.3%. Results: Age and %TBF were signi®cantly and inversely associated with RA. Furthermore, Social Desirability was negatively associated with RA. Body dissatisfaction and associating a smaller body size than one's own as being more healthy were also associated with a lower RA. Conclusions: These results suggest that Social Desirability and self image of body shape are associated with RA. Modi®cations in subject training may reduce the effect of these factors on RA. Sponsorship: This project was supported by a grant from the National Institute of Diabetes, Digestive and

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Evaluation of a Brief Telephone Questionnaire to Estimate Fruit and Vegetable Consumption in Diverse Study Populations

Cited by 194 publications

References 10 publications

Validade de indicadores do consumo de alimentos e bebidas obtidos por inquérito telefônico

Validade de indicadores do consumo de alimentos e bebidas obtidos por inquérito telefônico

Do aggregates of multiple questions better capture overall fish consumption than summary questions?

The association of energy intake bias with psychological scores of women

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