Table 2.

Comparison of awareness status of participants on influenza vaccine at two different stages

Period of time	group	Total number of questions	Correct number of questions	the total awareness rate(%)	χ2	P
Before intervention	the experimental groupa	3845	1947	50.6	1.874	0.171
	the control groupb	3845	2007	50.2
After intervention	the experimental group	3845	2703	70.3	0.050	0.822
	the control group	3845	2694	70.1

These items used to assess the awareness of influenza were from Table 3

^aThe total awareness rate of influenza vaccine in the experimental group before and after the intervention was statistically different.(χ² = 310.916, P < 0.001)

^bThe total awareness rate of influenza vaccine in the control group before and after the intervention was statistically different.(χ² = 258.3, P < 0.001)