نتایج جستجو برای: sigma method percentile curves
تعداد نتایج: 1733966 فیلتر نتایج به سال:
PURPOSE Demirjian's dental maturity scores and curves have been widely used for human age determination. Several authors have reported considerable differences between the true and estimated age based on the Demirjian curves, which have been accounted for by ethnicity. The purpose of the current study was to assess the role of ethnicity-specific dental maturation curves in age estimation of Sau...
Background and purpose: The evaluation of growth monitoring in children is one of the important sources of information to detect malnutrition. The objective of this study was to determine the trend of infant growth from birth to two years in rural communities of Babol and to compare it with NÇHS standard. Materials and methods: This study was based on the existing data in growth monitoring...
Background Skin involvement is a hallmark of systemic sclerosis and an important marker disease activity, severity prognosis. [1] The modified Rodnan skin score (mRSS), the current gold standard for evaluation in SSc, both clinical trials practice, has several limitations. [2] This highlights need more sensitive objective measures involvement, not only support development new treatments, but al...
OBJECTIVE To describe the linear growth and growth velocity of preterm infants born small for gestational age according to variables such as weight, length and head circumference, from birth to three months of corrected age. METHODS Prospective study of one hundred preterm infants born small for gestational age from 28 to 36 weeks after birth and classified as small according to the weight fo...
The purpose of this study was to obtain percentile curves for present teeth in smokers and non-smokers for use in oral health education. Dental examinations were carried out by two dentists. The number of present teeth in each subject was counted, excluding the third molars. Subjects consisted of 2,283 men aged between 25 and 54 years enrolled in the health insurance union of a bank in Yokohama...
Methods We prospectively enrolled healthy 115 children and adolescents, mean age 12.4±4.1 years, range 4.4-20.3, with no acquired or congenital heart disease, no chronic illness or any competitive sports activities. Transversal routine 2D steady-state free-precession acquisition was used to cover the whole heart. We determined maximal and minimal volumes of both atria and calculated cyclic volu...
distribution of the response variable are expressed as non-linear functions of the covariates. The non-linear quantile regression method would be used in a real field data related to production history in hydrocarbon reservoirs. Analysis of declining production rates and forecasting future performance of oil and gas wells is called decline curve analysis in petroleum engineering literature. Dec...
Motivated by recent work on integrable flows of curves and 1+1 dimensional sigma models, several O(N)-invariant classes of hyperbolic equations Utx = f(U,Ut, Ux) for an N -component vector U(t, x) are considered. In each class we find all scalinghomogeneous equations admitting a higher symmetry of least possible scaling weight. Sigma model interpretations of these equations are presented.
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