Sensitization to Common Allergens Among Children with Asthma and Allergic Rhinitis in Qatar

Figures & data

Table 1 Clinical Characteristics of 473 Children with Respiratory Allergic Diseases

Variable
Total number (n=473 patients)
Age (years ±SD)	7.6±3.3
Sex
Male	327 (69.1%)
Female	146 (30.9%)
M/F ratio	2.2/1.0
Allergy Type (n=473 patients)
Asthma	175(37%)
Allergic rhinitis	57(12%)
Both	209 (44.2%)
Others**	32(0.8%)
Family history of allergies*, (n=406 patients)
Positive	269 (66.3%)
Negative	137 (33.7%)
No of positive SPT (mean±SD)	2.1±1.7

Notes: *Data available on 406 patients. **Others: A or AR coexistent with other non-respiratory allergic diseases: drug allergy, eosinophilic esophagitis, etc.

Table 2 Rates of Different Types of Respiratory Allergic Disease According to Sex, Age, and Family History of Allergic Diseases

Characteristics	Number of Subjects (n=473 Patients)				P value
	Asthma	Rhinitis	Both (A-AR)	Others**
Sex
Male	114 (28.7%)	35(10.7%)	158(38.3%)	20(6.3%)	0.032
Female	61 (41.8%)	24(16.4%)	50(34.2%)	11(7.5%)
Age
2–5yr	76(43.4%)	20(35.1%)	39(18.8%)	9(29.0%)
>5yr–10yr	68(38.9%)	28(49.1%)	121(57.9%)	17(51.6%)	<0.0001
>10yr–14yr	31(17.7%)	9(16.4%)	49(23.3%)	6(19.4%)
Family history of allergy*
Positive	85(59.4%)	34(64.2%)	147(78.2%)	3(13.6%)	<0.0001
Negative	58(40.6%)	19(35.8%)	41(21.8%)	19(86.4%)

Notes: Yates corrected Chi-square test was applied in case of small cell frequencies (50% or more cells have expected frequencies <5) to compute respective statistical P-value. *Data available on 406 patients. **Others: A or AR coexistent with other non-respiratory allergic diseases: drug allergy, eosinophilic esophagitis, etc.

Figure 1 Frequency of positive skin tests among children with respiratory allergy.

Figure 2 Rates of different types of allergens according to age groups of children with respiratory allergic diseases.