The Prevalence of Allergic Diseases in Poland - the Results of the PMSEAD Study in Relation to Gender Differences.

Background: Males and females exhibit different susceptibility to allergic diseases.

Objectives: The aim of the study was to evaluate gender-related differences in the prevalence of allergic diseases in Poland.

Material And Methods: To evaluate this problem, data from the Polish Multicenter Study of the Epidemiology of Allergic Diseases (PMSEAD) was analyzed. There were assessed 16,238 individuals, aged 3 to 80 years, among them 12,970 adults and 3,268 children.

Results: In adults the prevalence of asthma was 5.4%, seasonal allergic rhinitis 8.5%, persistent allergic rhinitis 3.0%, atopic dermatitis 1.6%, contact dermatitis 2.0%, and drug allergy 8.6%. In children asthma was diagnosed in 8.6% of the individuals assessed, seasonal allergic rhinitis in 8.6%, persistent allergic rhinitis in 2.1%, atopic dermatitis in 4.7%, contact dermatitis in 1.1% and drug allergy in 8.9%. Among the children in the sample, significantly higher prevalence rates were found in boys than in girls for asthma (10.9% vs. 6.3%; OR = 1.81; p < 0.001), seasonal allergic rhinitis (9.8% vs 7.4%; OR = 1.37, p = 0.018) and persistent allergic rhinitis (2.6% vs. 1.5%; OR = 1.74, p = 0.029). When comparing the differences by gender among adults, there was a lower proportion of male than female subjects suffering from asthma (4.9% vs. 5.8%; OR = 0.83, p = 0.018), seasonal allergic rhinitis (7.6% vs. 9.3%; OR = 0.81, p = 0.001), atopic dermatitis (1.1% vs. 2.0%; OR = 0.53, p < 0.001), contact dermatitis (1.1% vs. 2.8%; OR = 0.39; p < 0.001) and drug allergy (5.1% vs. 11.6%; OR = 0.41, p < 0.001).

Conclusions: The opposite susceptibility to allergic diseases among children and adults may indicate that sex hormones play an important role in this phenomenon.