Table 7.: Determination of the risk of development of rhinitis according to the presence of seasonal, perennial and sensitisation to both groups of allergens (seasonal and perennial allergy together).

Atopy	Rhinitis (Positive)	Rhinitis (Negative)	OR - Odds ratio
Positive	103	6	7.8
Negative	103	47	1.00
c² = 25.87 p < 0.05; 95% Confidence interval (3.2 < OR < 19.1)
Atopy (Perennial)	Rhinitis (Positive)	Rhinitis (negaTive)	OR - Odds Ratio
Positive	66	6	5.01
Negative	103	47	1.00
c² = 14.16 p < 0.05; 95% Confidence interval (2.03 < OR < 12.39)
Atopy (Seasonal and Perennial)	Rhinitis (Positive)	Rhinitis (Negative)	OR - Odds Ratio
Positive	53	2	12.09
Negative	103	47	1.00
c² = 16.97 p < 0.05; 95% Confidence interval (2.8 < OR < 51.7)