GAS can not only cause pharyngitis, or sore throat, but also headache, stomachache, and a general feeling of fatigue and crumminess. A rash may also appear within seven days of becoming ill; this rash is NOT the same thing as âscarlet feverâ.
Conceptual model in which statistically valid task selection criteria is applied to identify individual tasks critical to the performance of a specific job.
A cross-sectional study design is used when. 1  The purpose of the study is descriptive, often in the form of a survey.  The purpose of the study is to find the prevalence of the outcome of interest, for the population or subgroups within the population at a given timepoint.