Each column generally represents a single variable; however, one variable may span several columns. At the most basic level, a codebook describes the layout of the data in the data file and describes what the data codes mean. Codebooks are used to document the values associated with the answer options for a given survey question. Each answer category is given a unique numeric value, and these unique numeric values are then used by ...
The fetal attitude describes the position of the parts of your baby's body. The normal fetal attitude is commonly called the fetal position. 1  The head is tucked down to the chest.  The arms and legs are drawn in towards the center of the chest.
The uterus (womb) is a hollow organ within which fetal development occurs. The uterus is characterized by the following regions: The fundus is the upper region where the uterine ducts join the uterus. The body is the major, central portion of the uterus. The isthmus is the lower, narrow portion of the uterus.