| Differences in the quantitative and qualitative performance of a calcium-specific food frequency questionnaire across age and sex. | |
MedLine Citation:
|
PMID: 16961679 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
OBJECTIVE: To examine putative differences in the quantitative and qualitative performance of a food frequency questionnaire (FFQ) for assessing dietary calcium intake across age and sex in the Greek population. MATERIALS AND METHODS: A total of 351 children (189 girls and 162 boys, aged 11.9 +/- 1.2 years), 260 adults (192 women and 68 men, aged 29.6 +/- 2.7 years) and 390 elderly individuals (317 women and 73 men, aged 68.6 +/- 4.6 years) were recruited. Estimates of calcium intake from the 30-item FFQ were compared with those from a multi-pass 24-h recall. RESULTS: The FFQ significantly underestimated mean calcium intake in all age groups and both sexes (P < 0.05). The magnitude of underestimation, however, was greater in adults (-207 +/- 344 mg day(-1)), less in the elderly (-137 +/- 310 mg day(-1)) and even less in children (-74 +/- 340 mg day(-1); P < 0.025), with no differences between sexes. Calcium intakes by the two methods were positively and significantly correlated in all study groups (r = 0.536-0.739, P < 0.001). Cohen's weighted kappa statistic ranged from 0.39 to 0.57, indicating moderate agreement between the two methods. The 95% limits of agreement were comparably wide across age and sex (boys: -762, 585 mg day(-1); girls: -747, 624 mg day(-1); adult men: -972, 505 mg day(-1); adult women: -867, 412 mg day(-1); elderly men: -858, 486 mg day(-1); elderly women: -732, 480 mg day(-1)). A significant association between age, sex and the classification of individuals as true/false positive/negative was detected (P < 0.001), implying that sensitivity, specificity, positive and negative predictive values of the FFQ were not independent of the age and sex of the participants. Gross misclassification by the FFQ ranged from 0% to 4.2%, whereas 75.3-87.3% of the subjects were correctly classified. In this respect, the FFQ performed similarly across the study groups (P = 0.065). Without controlling for age, however, gross misclassification appeared to be higher in females than in males (3.2% versus 0.7%, respectively, P = 0.048). CONCLUSIONS: There may be several significant differences in the quantitative and qualitative performance of a calcium-specific FFQ across age and sex. This should be taken into account when attempting to evaluate dietary calcium intake in men and women or in different age groups, as some of the differences between study groups may actually be due to the different response of these groups to the FFQ. |
Authors:
|
F Magkos; Y Manios; E Babaroutsi; L S Sidossis |
Related Documents
:
|
17657549 - Diet and lifestyle associated with increased bone mineral density: cross-sectional stud... 7872049 - Bone mineral density at distal tibia using dual-energy x-ray absorptiometry in normal w... 14691689 - Total lymphocyte count and femoral bone mineral density in postmenopausal women. 12811629 - Influence of number of pregnancies on bone mineral density in postmenopausal women of d... 17002569 - Reduced peripheral nerve function is related to lower hip bmd and calcaneal qus in olde... 17023249 - Peripheral quantitative computed tomography: measurement sensitivity in persons with an... 25311829 - Development and heritability of subcortical brain volumes at age 9 and 12. 11300709 - The influence of testosterone on territorial defence and parental behavior in male free... 24973979 - Influence of patients' age and sex and the mode of administration on results from the n... |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: Journal of human nutrition and dietetics : the official journal of the British Dietetic Association Volume: 19 ISSN: 0952-3871 ISO Abbreviation: J Hum Nutr Diet Publication Date: 2006 Oct |
Date Detail:
|
Created Date: 2006-09-11 Completed Date: 2007-01-09 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 8904840 Medline TA: J Hum Nutr Diet Country: England |
Other Details:
|
Languages: eng Pagination: 331-42 Citation Subset: IM |
Affiliation:
|
Laboratory of Nutrition and Clinical Dietetics, Department of Nutrition and Dietetics, Harokopio University, Athens, Greece. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adolescent Adult Age Distribution Aged Bone Density Conservation Agents / administration & dosage* Calcium, Dietary / administration & dosage* Child Cohort Studies Diet* Diet Surveys Female Greece Humans Male Mental Recall Middle Aged Predictive Value of Tests Questionnaires / standards* Reproducibility of Results Risk Factors Sensitivity and Specificity Sex Distribution |
| Chemical | |
Reg. No./Substance:
|
0/Bone Density Conservation Agents; 0/Calcium, Dietary |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Validation and reproducibility of a semi-quantitative Food Frequency Questionnaire for use in elderl...
Next Document: Unidentified under-nutrition: dietary intake and anthropometric indices in a residential care home p...