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Table 2 Characteristics of the population of patients receiving VE or VC VIT between 1990 and 2016. Mean, minimum and maximum values are reported along with the levels of significance for the Student’s (t), Mann-Whitney (MW) and chi-square (X2) tests. The significant differences are in bold

From: Vespa crabro immunotherapy versus Vespula-venom immunotherapy in Vespa crabro allergy: a comparison study in field re-stings

  Group VC N = 220 Group VE N = 83 Statistical differences
Age mean (range) 49.9 (10–78) 43.7 (15–74) MW, P< 0.014
M/F 166/54 66/17 X2, P = 0.544
Grade before VIT n (%)    X2, P Exact  = 0.134
Mueller 1 13 (6%) 0 (0%)  
Mueller 2 30 (14%) 11 (14%)  
Mueller 3 64 (29%) 29 (34%)  
Mueller 4 111 (51%) 43 (52%)  
VC Intradermal test (thereshold in mcg/ml)a    X2, P= 0.003
1 mcg/ml 45 (20%) 26 (31%)  
0,1 mcg/ml 70 (32%) 34 (41%)  
0,01 mcg/ml 60 (27%) 20 (24%)  
0,001 mcg/ml 21 (10%) 3 (4%)  
0,0001 mcg/ml 24 (11%)   
VC specific IgE mean (range) kU/L 2.1 (0.3–73.8) 3.0 (0.2–32.9) t, P > 0.05
Tryptase, mean (range) 5.5 (1–40) 5.2 (1.3–39.1) t, P > 0.05
  1. alowest venom concentration able to induce at least a 5-mm diameter’s wheal with erythema