Figure 2
Proportions (%) of having one, two or at least three positive SPT among all sensitized subjects in 1994 and 2009, respectively. Difference (p-value) by study year.
Figure 2 | Allergy, Asthma & Clinical Immunology
Proportions (%) of having one, two or at least three positive SPT among all sensitized subjects in 1994 and 2009, respectively. Difference (p-value) by study year.