The Chihuahua is known by its small size, big ears, large, dark eyes and its eccentric personality. Some have even joked that the Chihuahua is not really a dog but a descended of rats. Although small in body and size, it is a strong, robust breed. The body is longer in length than its height, and the coat can either be long or short depending on the variety. Colors include brown, fawn, chestnut, and black and tan.
Case studies are descriptions of a real life experience, related to the field of study or training, which are used to make points, raise issues or otherwise enhance the participantsâ understanding and learning experience.
Case control studies are observational because no intervention is attempted and no attempt is made to alter the course of the disease. The goal is to retrospectively determine the exposure to the risk factor of interest from each of the two groups of individuals: cases and controls. These studies are designed to estimate odds. Case control studies are also known as retrospective studies and case-referent studies..