Table 2: Demographic and clinical data of patients included in the study.

Group A (Nonpurified)
Group B (purified)
P values

Sex (male/female)34/630/100.8

Age, years, mean (SD)42 (17)42 (16)0.8

Mueller classification
(Reaction to HB sting)
  
 Grade I00 0.7  
 Grade II79
 Grade III1513
 Grade IV1818