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Article

A Measurement Error Model for Physical Activity Level as Measured by a Questionnaire With Application to the 1999-2006 NHANES Questionnaire

Janet-A TOOZE ; Richard-P TROIANO ; Raymond-J CARROLL ; Alanna-J MOSHFEGH ; Laurence-S FREEDMAN |

Dans American journal of epidemiology (vol. 177, n° 11, Juin 2013)

[BDSP. Notice produite par INIST-CNRS rIR0x897. Diffusion soumise à autorisation]. Systematic investigations into the structure of measurement error of physical activity questionnaires are lacking. We propose a measurement error model for a phys[...]

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Article

25-Hydroxyvitamin D Status and Change in Physical Performance and Strength in Older Adults : The Health, Aging, and Body Composition Study.

Denise-K HOUSTON ; Mary ANN JOHNSON ; Doug-C BAUER ; Jane-A CAULEY ; Peggy-M CAWTHON ; Tamara-B HARRIS ; Dorothy-B HAUSMAN ; Stephen-B KRITCHEVSKY ; M. KYLA SHEA ; Rebecca-H NEIBERG ; Gary-G SCHWARTZ ; Eleanor-M SIMONSICK ; Janet-A TOOZE ; Frances-A TYLAVSKY ; Marjolein VISSER ; Jeff-D WILLIAMSON ; Department of Biostatistical Sciences. Wake Forest School of Medicine. Winston Salem. NC. USA ; Department of Foods and Nutrition. College of Family and Consumer Sciences. University of Georgia. Athens. GEO ; Department of Internal Medicine. Wake Forest School of Medicine. Winston Salem. NC. USA |

Dans American journal of epidemiology (vol. 176, n° 11, 2012)

[BDSP. Notice produite par INIST-CNRS kR0xHsI8. Diffusion soumise à autorisation]. Low 25-hydroxyvitamin D (25 (OH) D) concentrations are common among older adults and are associated with poorer physical performance and strength, but results fro[...]

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