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Table 4 Adverse events following influenza vaccination by age group, sex and reaction to non-influenza vaccines

From: Comparison of response rates on invitation mode of a web-based survey on influenza vaccine adverse events among healthcare workers: a pilot study

  

Adverse event after influenza vaccine

 

Total

No AE

Local AE only

Systemic AE

Recurrent systemic AE

p-value

Overall

386 (100.0)a

287 (74.4)

29 (7.5)

48 (12.4)

22 (5.7)

 

Invitation Mode

 Email

218 (56.5)

153 (70.2)

15 (6.9)

34 (15.6)

16 (7.3)

 

 Post

168 (43.5)

134 (79.8)

14 (8.3)

14 (8.3)

6 (3.6)

0.05

Length

 Short version

180 (46.6)

121 (67.2)

18 (10.0)

31 (17.2)

10 (5.6)

 

 Longer version

206 (53.4)

166 (80.6)

11 (5.3)

17 (8.3)

12 (5.8)

0.01

Format

 Closed-ended

187 (48.4)

141 (75.1)

15 (8.0)

18 (9.6)

13 (7.0)

 

 Open-ended

199 (51.6)

146 (73.4)

14 (7.0)

30 (15.1)

9 (4.5)

0.32

Ageb

 18–49 yrs

155 (40.3)

106 (68.4)

11 (7.1)

28 (18.1)

10 (6.5)

 

  ≥ 50 yrs

230 (59.7)

180 (78.3)

18 (7.8)

20 (8.7)

12 (5.2)

0.05

Sex

 Female

303 (78.5)

224 (74.0)

23 (7.6)

35 (11.6)

21 (6.9)

 

 Male

83 (21.5)

63 (75.9)

6 (7.2)

13 (15.7)

1 (1.2)

0.17

Ageb and Sex

 Female 18–49 yrs

123 (32.0)

85 (69.1)

9 (7.3)

19 (15.5)

10 (8.1)

 

 Male 18–49 yrs

32 (8.3)

21 (65.6)

2 (6.3)

9 (28.1)

0

 

 Female ≥50 yrs

180 (46.8)

139 (77.2)

14 (7.8)

16 (8.9)

11 (6.1)

 

 Male ≥50 yrs

50 (13.0)

41 (82.0)

4 (8.0)

4 (8.0)

1 (2.0)

0.11

AE after non-influenza vaccines

 Yes

58 (15.0)

33 (56.9)

11 (19.0)

7 (12.1)

7 (12.1)

 

 No

248 (64.3)

208 (83.9)

10 (4.0)

21 (8.5)

9 (3.6)

 

Don’t recall/No answer

80 (20.7)

46 (57.5)

8 (10.0)

20 (25.0)

6 (7.5)

< 0.001

  1. Abbreviations: AE: Adverse event; yrs.: Years
  2. *P < 0.025 when comparing recurring systemic adverse events by factor
  3. arespondent had no description of his/her adverse event
  4. brespondent provided no data for age