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 Study vs. Cohort on a Timeline. A case-control study is a type of study design used widely, originally developed in epidemiology, although its use has also been advocated for the social sciences.he case-control study design is often used in the study of rare diseases or as a preliminary study where little is known about the association between the risk factor and disease of interest. Compared to prospective cohort studies they tend to be less costly and shorter in duration.