Objective: To evaluate the repeatability of a children's food frequency questionnaire (FFQ) by gender, ethnicity, and age group. Design: A 117-item FFQ asking about food intake patterns over the past ...

Background: Self-report questionnaires play an important role as outcome measures in shoulder research. Having an estimate of the measurement error of these ...

Background Despite the emerging use of treadmills integrated with pressure platforms as outcome tools in both clinical and research settings, published evidence regarding the measurement properties of ...

To assess the repeatability of measurements of higher order aberrations using three different aberrometers and to compare higher order aberration measurements between optical path difference (OPD) ...

According to researchers, long-term changes in refraction after cataract surgery resulted from natural fluctuations in corneal curvature rather than from the IOL position shift. In 59 eyes of 59 ...