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.
Dengue fever symptoms. Dengue fever is a disease that features muscular aches and pains, fevers and often is accompanied by a fine petechial or pin-point rash. Severe cases of Dengue can progress to Dengue Hemorrhagic Fever (DHF) where the victim suffers from massive bleeding, frequently from IV sites, gums and rectum. People generally progress to DHF when they have been previously infected by Dengue, earlier in their life.