Safety and Efficacy of Tree Pollen Specific Immunotherapy on the Ultrarush Administration Schedule Method Using Purethal Trees

Table 4

Use of relief drugs during tree pollen season.

𝑛 = number of; days requiring drug use	Mean drug use score during tree pollen season
	II–V 2009	II–V 2010	II–V 2011	II–V 2012
Group A; 𝑁=776	1.661±0.445	1.018±0.578	0.880±0.250	0.498±0.213
Group B; 𝑁=752	1.788±0.652	1.109±0.299	0.745±0.321	0.532±0.244
𝑃	NS	NS	NS	NS

NS: not statistically significant; 𝑁: number of days with score assessment.