Table 2. Logistic regression model for allergy history in children with DS.

	Children with AL		Children with ALL
Variables	OR	CI 95%	OR	CI 95%
Skin allergy	0.42	0.18–0.97	0.26	0.08–0.83
Rhinitis	1.07	0.34–3.32	1.01	0.24–4.20
Bronchial asthma	3.29	0.97–11.14	4.24	1.01–17.79
Other allergic diseases	1.56	0.65–3.75	1.84	0.71–4.72
Overall allergies	0.75	0.39–1.42	0.83	0.39–1.75

Abbreviations: AL=acute leukaemia; ALL=acute lymphoblastic leukaemia; CI=confidence interval; DS=Down syndrome; OR=odds ratio.

Odds ratios were adjusted for the following variables: gender, weight at birth, birth order, breastfeeding, age at diagnosis of leukaemia, stacking level, maternal information (age at child's birth, education, occupation, and smoking), and paternal information (occupation and smoking).