Allergen group Lithuania Sweden p value % (Positive test reactions/total tests) % (Positive test reactions/total tests) Preservatives 3.7 (48/1283) 1.8 (45/2568) 0.0003 Metals 13.1 (84/642) 9.3 (120/1284) 0.029 Fragrances 3.2 (41/1283) 3.0 (77/2532) 0.84 Corticosteroids 0.7 (3/428) 1.1 (9/856) 0.76 Rubber chemicals 1.6 (14/856) 1.6 (27/1712) 1

Table 3: Rates and differences of positive patch tests to common contact allergens in the Lithuanian and Swedish centers.