Table A6.
Number (%) recording side effects following baseline influenza vaccination, by age group (<5, ≥5 years)
| Side effects | H1N1 only | Seasonal only | H1N1 and seasonal | H1N1/seasonal and other | P valuea | Overall | H1N1 total | Not H1N1 total | P valueb |
|---|---|---|---|---|---|---|---|---|---|
| Aged <5 years | |||||||||
| N (NMISSING) | 123 (0) | 2 (0) | 5 (0) | 2 (0) | 132 (0) | 130 (0) | 2 (0) | ||
| Any | – | – | – | – | 61 (46.2%) | 60 (46.2%) | 1 (50.0%) | 1.000 | |
| Discomfort/pain | 81 (65.9%) | 0 (0.0%) | 3 (60.0%) | 1 (50.0%) | 0.294 | 85 (64.4%) | – | – | |
| Any (including pain/discomfort)c | 97 (78.9%) | 1 (50.0%) | 4 (80.0%) | 1 (50.0%) | 0.365 | 103 (78.0%) | 102 (78.5%) | 1 (50.0%) | 0.392 |
| Aged ≥5 years | |||||||||
| N (NMISSING) | 571 (0) | 133 (0) | 219 (0) | 48 (0) | 971 (0) | 830 (0) | 141 (0) | ||
| Any | – | – | – | – | 402 (41.4%) | 365 (44.0%) | 37 (26.2%) | <0.001 | |
| Discomfort/pain | 335 (58.7%) | 36 (27.1%) | 142 (64.8%) | 28 (58.3%) | <0.001 | 541 (55.7%) | – | – | |
| Any (including pain/discomfort)c | 414 (72.5%) | 60 (45.1%) | 163 (74.4%) | 32 (66.7%) | <0.001 | 669 (68.9%) | 606 (73.0%) | 63 (44.7%) | <0.001 |
a
Notes: P value from Fisher’s exact test on the difference between the four vaccine groups;
b
P value from Fisher’s exact test on the difference between respondents receiving H1N1 vaccine and those receiving vaccines other than H1N1 (seasonal/seasonal + other);
c
any side effects defined from the side effect cascade plus reports of pain or discomfort.