Serological status according to self-reported flu status (proportions and 95% CI)
| Self-reported flu status | n | % Seropositive* | 95% CI | p Value† |
| Adults (18+ years)‡ (n=413) | ||||
| No | 221 | 21.3 | 13.0 to 29.7 | 0.802 |
| Possibly | 68 | 25.1 | 14.2 to 36 | |
| Yes | 108 | 23.3 | 11.9 to 34.7 | |
| Children (<18 years)§ (n=318) | ||||
| No | 149 | 45.9 | 34.4 to 57.4 | 0.723 |
| Possibly | 55 | 42.2 | 28.6 to 55.9 | |
| Yes | 86 | 40.1 | 24.7 to 55.6 | |
| Healthcare workers¶ (n=423) | ||||
| No | 222 | 25.7 | 20.1 to 31.9 | 0.415 |
| Possibly | 80 | 27.5 | 18.1 to 38.6 | |
| Yes | 94 | 33.0 | 23.6 to 43.4 | |
↵* Weighted percentage.
↵† p Values for adults and children in a community sample from the Rao-Scott χ2 test; p value for healthcare workers is from Pearson's χ2 test.
↵‡ 16 Adults from a community sample responded ‘don't know’ on self-reported influenza status and were excluded from analysis.
↵§ 21 Children from a community sample responded ‘don't know’ on self-reported influenza status and were excluded from analysis.
↵¶ 22 Healthcare worker who responded ‘don't know’ and five missing immunological status were excluded from analysis.