نتایج جستجو برای: centile curves
تعداد نتایج: 94616 فیلتر نتایج به سال:
By combining experiments with simple model calculations, we obtain new insight in spin transport through hybrid, CoFeB/Al2O3(1.5 nm)/tris(8-hydroxyquinoline)aluminium (Alq3)/Co spin valves. We have measured the characteristic changes in the I-V behavior as well as the intrinsic loss of magnetoresistance at the onset of multiple-step tunneling. In the regime of multiple-step tunneling, under the...
Sarabia et al. (1999) present a basic model to create ordered families of Lorenz curves, along with basic theorems that describe the conditions for the models to satisfy the definition of the Lorenz curve. Using these basic models, they suggest a family which includes several well-known Lorenz models as special cases. This paper first shows that their basic theorems can be generalized. The pape...
OBJECTIVE To determine cut offs to define thinness in children and adolescents, based on body mass index at age 18 years. DESIGN International survey of six large nationally representative cross sectional studies on growth. SETTING Brazil, Great Britain, Hong Kong, the Netherlands, Singapore, and the United States. SUBJECTS 97 876 males and 94 851 females from birth to 25 years. MAIN OU...
I will use the terms “reference centiles” or “centile charts,” as the setting that I consider here is more general than that of “growth charts.” Longitudinal reference centiles over some measure of time (typically age) are almost always implemented repeatedly on the same individual. In this kind of setting the notion of conditional or adaptive centile charts is very appealing, particularly when...
We report two sisters with macrocephaly, epilepsy, and severe mental retardation. The first child was a 14 year old girl born at term after a normal pregnancy, with birth weight 3600 g and occipitofrontal circumference (OFC) 36 cm (75th centile). Her head size increased markedly during the first six months of life, and was later stable at 2-3 cm above the 97.5th centile. Her development was cha...
lation cannot arise. We welcome the authors' recommendation that growth problems be identified at an early age in a community height screening programme. Once screening has been carried out on initial height however, there is little to be gained from waiting a year and screening on velocity using the 25th centile as a cut off, as in the Oxford study. First, the normal short child, on the third ...
OBJECTIVE To describe birth weight and postnatal weight gain in a contemporaneous population of babies born <32 weeks' gestation, using routinely captured electronic clinical data. DESIGN Anonymised longitudinal weight data from 2006 to 2011. SETTING National Health Service neonatal units in England. METHODS Birth weight centiles were constructed using the LMS method, and longitudinal wei...
BACKGROUND The new growth charts in the UK, the UK-WHO charts, comprise prescriptive data from the WHO standard between two weeks and four years of age. Little is known about the development of obesity risk in normal UK infants, who are necessarily not fed according to the WHO recommendations and do not live in constraint-free environments (the selection criteria of the WHO standard source samp...
BACKGROUND For ages 5-19 years, the World Health Organization (WHO) publishes reference charts based on 'core data' from the US National Center for Health Statistics (NCHS), collected from 1963-75 on 22,917 US children. To promote the use of body mass index in older children, weight-for-age was omitted after age 10. Health providers have subsequently expressed concerns about this omission and t...
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