Martinette T. Streppel

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OBJECTIVE To investigate the association between serum 25-hydroxyvitamin D concentrations (25(OH)D) and mortality in a large consortium of cohort studies paying particular attention to potential age, sex, season, and country differences. DESIGN Meta-analysis of individual participant data of eight prospective cohort studies from Europe and the US. (More)
BACKGROUND Invalid information on dietary intake may lead to false diet-disease associations. This study was conducted to examine the relative validity of the food frequency questionnaire (FFQ) used to assess dietary intake in the Leiden Longevity Study. METHODS A total of 128 men and women participating in the Leiden Longevity Study were included in the(More)
BACKGROUND Cardiovascular disease (CVD) represents a leading cause of mortality worldwide, especially in the elderly. Lowering the number of CVD deaths requires preventive strategies targeted on the elderly. OBJECTIVE The objective was to generate evidence on the association between WHO dietary recommendations and mortality from CVD, coronary artery(More)
Nutrient-rich food (NRF) index scores are dietary quality indices based on nutrient density. We studied the design aspects involved in the development and validation of NRF index scores, using the Dutch consumption data and guidelines as an example. We evaluated fifteen NRF index scores against the Dutch Healthy Diet Index (DHD-index), a measure of(More)
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