Influenza activity is increasing in the United States. CDC is receiving reports of flu-associated illnesses, hospitalizations, and deaths. Influenza A (H3N2) viruses are the most common viruses circulating in the United States.
An independent clause is a group of words that contains a subject and verb and expresses a complete thought. An independent clause is a sentence.
An independent variable is an input to a process or analysis that influences the dependent variable. While there can only be one dependent variable in a study, there may be multiple independent variables.