Table 7. Reactions in 30 min, local reactions and systemic reactions during 28 d after vaccination in the study groups.

Age group	Subgroup	No. of subjects	Reactions in 30minutes			Local reactions			Systemic reactions
			No.	Percentage	P value	No.	Percentage	P value	No.	Percentage	P value
3–10 y	T1	186	9	4.84		14	7.53		9	4.84
	T2	189	9	4.76	0.045*	13	6.88	0.130*	16	8.47	0.234*
	T3	183	18	9.78	0.079†	10	5.43	0.710†	19	10.33	0.137†
	C	284	29	10.21		20	7.04		20	7.04
11–17 y	T1	132	13	9.85		10	7.58		13	9.85
	T2	133	11	8.27	0.309*	8	6.02	0.440*	9	6.77	0.442*
	T3	130	14	10.77	0.785†	7	5.38	0.754†	8	6.15	0.488†
	C	201	11	5.47		16	7.96		21	10.45
18–54 y	T1	178	6	3.37		10	5.62		9	5.06
	T2	185	3	1.62	0.107*	9	4.86	0.176*	2	1.08	0.042*
	T3	180	11	6.11	0.072†	16	8.89	0.253†	8	4.44	0.846†
	C	268	15	5.6		11	4.1		5	1.87
≥55 y	T1	188	2	1.06		7	3.72		6	3.19
	T2	185	3	1.62	0.083*	3	1.62	0.078*	2	1.08	0.026*
	T3	188	6	3.19	0.597†	8	4.26	0.313†	9	4.79	0.107†
	C	276	13	4.71		18	6.52		15	5.43

^*P value between experimental and control groups; ^†P value between three experimental groups (three batches of influenza vaccine).