Analysis of data obtained from discrete variables requires the use of specific statistical tests which are different from those used to assess continuous variables (such as cardiac output, blood pressure, or PaO 2) which can assume an infinite range of values.
Primary symptoms of dengue appear three to 15 days after the mosquito bite and include the following: 1  high fever and severe headache, 2  with severe pain behind the eyes that is apparent when trying to move the eyes.
Once you are bitten by a mosquito that is carrying dengue fever, the average time for symptoms to begin is four to seven days. 1  While the average incubation period is from of four to seven days, you may experience symptoms as early as three days, or as late as two weeks, after being bitten.ther common symptoms caused by the virus can create hemodynamic changes, or changes that alter the flow of blood in the body. 1  Examples of blood flow changes seen with dengue fever include nose bleeds, bleeding from the gums, and areas of bruising.