نتایج جستجو برای: first birth timing
تعداد نتایج: 1606792 فیلتر نتایج به سال:
and seminar participants at various universities for helpful comments and suggestions. 2 ABSTRACT This paper uses data from the National Longitudinal Survey of Youth to evaluate an economic model of the timing of first birth. We estimate a Tobit-type model, in which a woman chooses her age of first birth based on economic factors subject to the biological constraint that the birth must occur af...
Variations in the timing of emergence of primary teeth are under strong genetic control, but there is also a significant contribution from external factors. The aim of this study was to evaluate the influence of preterm birth, birth weight and length, and feeding practices during the first 6 months of life on the timing of emergence of the first primary tooth. Data on pregnancy duration, birth ...
Background : Hepatitis B can be easily transmitted form mother to child and can be prevented via vaccination of the newborn. American Academy of Pediatrics recommends preterm infants weighing less than 2000 grams at birth and born to HBS-Ag negative mothers should have their first dose of hepatitis B vaccine moved up to 1 month of age. The aim of the present study was to assess and compare the ...
BACKGROUND First childbirth in a woman's life is one of the most important events in her life. It marks a turnaround when she might have to drop roles of career building and education, for motherhood and parenthood. The timing of the commencement of these roles affects the child bearing behavior of women as they progress in their reproductive ages. Prevalent early first childbirth in Nigeria ha...
the purpose of this study was the effect of time of training and first night of sleep on implicit (accuracy) and motor (timing) components of timed motor sequences task (tmst) enhancement. forty-eight right-handed students (19-25 years old), who have had adequate sleep quality, were divided into three equal groups according to purdue hand and fingers' fine motor skills test and simple reac...
Several factors can affect lamb body weight (BW) and immune status during the first days of life, including colostrum source and timing of the first colostrum feeding. The aim of this study was to evaluate the effects of colostrum source (goat or sheep) and timing of the first colostrum feeding (2 or 14h after birth) on lamb BW and immune status. In this study, 40 lambs were removed from their ...
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