OBJECTIVES Augmentation index (AIx) is widely used as a measure of wave reflection. We compared the relationship between AIx and age, height and sex with 'gold standard' measures of wave reflection derived from measurements of pressure and flow to establish how well AIx measures wave reflection. MATERIALS AND METHODS Measurements of carotid pressure and flow velocity were made in the carotid ...

Why a Sex Difference in Age-Adjusted Relationship Between Height and Stroke Mortality? To the Editor: We read with interest the study by Hozawa et al,1 who concluded that height is inversely related to stroke mortality and that the relationship is statistically significant among women but not men when adjusted for age. The authors put forward several possible confounding factors including age e...

Jason-2 was launched on June 20, 2008. The main payload of is a radar altimeter that measures, among other variables, significant wave height (SWH) and surface wind speed. To compliment the 25-year reference altimetry record, left its orbit to younger sibling Jason-3 which January 17, 2016 became operational October 14, 2016. then moved another location same till July 2017 when it new long-repe...

OBJECTIVE To compare alternative models for the imputation of BMIM (measured weight in kilograms/measured height in meters squared) in a longitudinal study. METHODS We used data from 11,008 adults examined at wave III (2001-2002) and wave IV (2007-2008) in the National Longitudinal Study of Adolescent to Adult Health. Participants were asked their height and weight before being measured. Equa...