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Relative validity of brief-type self-administered diet history questionnaire among very old Japanese aged 80 years or older.

ABSTRACT: OBJECTIVE:Dietary questionnaires for assessing dietary intakes among populations of individuals aged 80 years or older (the very old) are very limited. We examined the relative validity of forty-three nutrients and twenty-seven food groups estimated by a brief-type self-administered diet history questionnaire (BDHQ) targeting very old Japanese, using semi-weighed dietary records (DR) as a reference. DESIGN:Between June and August 2012 and between June 2015 and February 2016, a three-day non-consecutive DR (at two-week intervals) and a BDHQ were completed. SETTING:Tokyo, the capital prefecture of Japan. SUBJECTS:Eighty very old Japanese (thirty-six men and forty-four women) aged 82-94 years. RESULTS:The median intakes of 40-70 % of the crude and energy-adjusted nutrients estimated by the BDHQ were significantly different from those estimated by the DR. The median Spearman's correlation coefficient of nutrient intakes between the BDHQ and the DR was 0·39-0·46. About half (48-56 %) of the food groups were significantly different in terms of the median intakes estimated by the BDHQ and the DR in crude and energy-adjusted values. The median Spearman's correlation coefficient between the BDHQ and the DR was 0·45-0·48. CONCLUSIONS:Acceptable Spearman's correlations (?0·3) were obtained for many dietary intakes among the very old Japanese population. The BDHQ is a good candidate for epidemiological studies among very old Japanese, although, for some nutrients and food groups, the difficulty of estimating accurate median intakes is one of the limitations for the tool. Further efforts to enhance the validity of the BDHQ for very old populations are needed.

SUBMITTER: Kobayashi S

PROVIDER: S-EPMC6414039 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature

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Relative validity of brief-type self-administered diet history questionnaire among very old Japanese aged 80 years or older.

Kobayashi Satomi S Yuan Xiaoyi X Sasaki Satoshi S Osawa Yusuke Y Hirata Takumi T Abe Yukiko Y Takayama Michiyo M Arai Yasumichi Y Masui Yukie Y Ishizaki Tatsuro T

Public health nutrition 20181002 2

<h4>Objective</h4>Dietary questionnaires for assessing dietary intakes among populations of individuals aged 80 years or older (the very old) are very limited. We examined the relative validity of forty-three nutrients and twenty-seven food groups estimated by a brief-type self-administered diet history questionnaire (BDHQ) targeting very old Japanese, using semi-weighed dietary records (DR) as a reference.<h4>Design</h4>Between June and August 2012 and between June 2015 and February 2016, a thr ...[more]

PMID: 30274565

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Project description:BackgroundPopulation aging will be one of humanity's major challenges in the decades to come. In addition to focusing on the pathologies causing the greatest mortality and morbidity in this population, such as dementia, health research in elderly people must consider a myriad of other interlinked factors, such as geriatric syndromes, social aspects, and factors related to preserving quality of life and promoting healthy aging. This study aims to identify the main subject areas attracting research attention with regard to very old (≥ 80 years) populations.MethodsDocuments assigned with the medical subject heading "Aged, 80 and over" were retrieved from MEDLINE and the Web of Science. This dataset was used to determine publication output by disease, geographic region, country, and discipline. A co-word analysis was undertaken to identify thematic research clusters.ResultsSince the mid-2000s, there has been a boom in scientific output focusing specifically on very old populations, especially in Europe (43.7% of the documents) but also in North America (30.5%) and Asia (26%); other regions made only nominal contributions (0.5 to 4.4%). The USA produced the most research, while the most growth over the study period occurred in Japan, Spain, and China. Four broad thematic clusters were identified: a) geriatric diseases, health services for the aged, and social and psychological issues of aging; b) cardiovascular diseases; c) neoplasms, and d) bacterial infections & anti-bacterial agents.ConclusionsScientific research in very old populations covers a wide variety of interrelated topics. In quantitative terms, the top subject areas have to do with cardiovascular and cerebrovascular diseases (including aortic valve stenosis and stroke), dementia, and neoplasms. However, other degenerative pathologies, geriatric syndromes, and different social and psychosocial aspects also attract considerable interest. It is necessary to promote more equal participation in global research on pathologies and topics related to very elderly populations, as the highest rates of population aging and the largest numbers of elderly people in the next decades will be in low- and middle-income countries.

Dataset Information

Relative validity of brief-type self-administered diet history questionnaire among very old Japanese aged 80 years or older.

Publications

Relative validity of brief-type self-administered diet history questionnaire among very old Japanese aged 80 years or older.

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