Fig. (4) Comparison of the mean total scores for allergic conjunctivitis among groups with different classes of serum dog-specific IgE or IgG. Patients were divided into three groups according to the dog-specific IgE or IgG class as described in Methods. The results are expressed as the mean ± SD. A comparison among the groups was done by the Kruskal-Wallis one-way analysis of variance.