- A.C. Ham (1)
- R.T. Jongh de (1)
- P. Lips (1)
- N.M. Schoor van (1)
- E. Sohl (1)
- K.M.A. Swart (1)
- N.I. Tak (1)
- S.J. Velde te (2)
- N. Velde van der (1)
- J.H.M. Vries de (1)
- J.P. Wijngaarden van (1)
- N.L. Zwaluw van der (1)
The association between vitamin D status and parameters for bone density and quality is modified by Body Mass Index
Sohl, E. ; Jongh, R.T. de; Swart, K.M.A. ; Enneman, A.W. ; Wijngaarden, J.P. van; Dijk, S.C. van; Ham, A.C. ; Zwaluw, N.L. van der; Brouwer-Brolsma, E.M. ; Velde, N. van der; Groot, C.P.G.M. de; Velde, S.J. te; Lips, P. ; Schoor, N.M. van - \ 2015
Calcified Tissue International 96 (2015)2. - ISSN 0171-967X - p. 113 - 122.
quantitative ultrasound parameters - mineral density - postmenopausal women - d deficiency - physical performance - 25-hydroxyvitamin d - risk-assessment - older persons - population - metaanalysis
The association of vitamin D status with bone mineral density (BMD) and Quantitative Ultrasound measurements (QUS) has been inconsistent in previous studies, probably caused by moderating effects. This study explored (1) the association of vitamin D status with QUS and BMD, and (2) whether these associations were modified by body mass index (BMI), age, gender, or physical activity. Two-independent cohorts of the Longitudinal Aging Study Amsterdam (LASA-I, 1995/1996, aged =65; LASA-II, 2008/2009, aged 61–71) and baseline measurement of the B-vitamins for the prevention of osteoporotic fractures (B-PROOF) study (2008–2011, aged 65+) were used. QUS measurements [broadband ultrasound attenuation (BUA) and speed of sound (SOS)] were performed at the calcaneus in all three cohorts (N = 1,235, N = 365, N = 1319); BMD was measured by Dual X-ray absorptiometry (DXA) in B-PROOF (N = 1,162 and 1,192 for specific sites) and LASA-I (N = 492 and 503). The associations of vitamin D status with BUA and BMD were modified by BMI. Only in persons with low-to-normal BMI (
Parent and child reports of fruit and vegetable intakes and related family environmental factors show low levels of agreement
Tak, N.I. ; Velde, S.J. te; Vries, J.H.M. de; Brug, J. - \ 2006
Journal of Human Nutrition and Dietetics 19 (2006)4. - ISSN 0952-3871 - p. 275 - 285.
food frequency questionnaire - coronary-heart-disease - pro children - dietary-intake - consumption - validity - schoolchildren - reproducibility - conceptualization - intervention
OBJECTIVE: The purpose of the present study was to determine the level of agreement between child and parent reports of 9- to 10-year-old children's consumption of fruit and vegetables and potential family-environmental determinants. METHODS: Schoolchildren and their parents completed parallel questionnaires at baseline and at follow-up (1 year later) about usual fruit and vegetable consumption of the child, potential determinants and general demographics. Matched child-parent couples were included in the analyses (baseline = 380; follow-up = 307). To assess the level of agreement between child and parent reports at both points in time, dependent-sample t-test, correlation coefficients, weighted Cohen's kappa coefficients and Bland-Altman plots including limits of agreement were used. RESULTS: Both at baseline and at follow-up, the mean intake of fruit and vegetable reported by the children were significantly higher than reported by their parents, but differences were smaller at follow-up. Correlation coefficients between child and parent reports (0.28-0.43) and weighted Cohen's kappa coefficients (0.25-0.28) were weak to moderate. Limits of agreement were wide. CONCLUSION: The agreement between parent and child reports is weak to moderate and may depend on the age of the child. Fourth graders may overestimate their own intake of fruit and vegetables.