Table 2. Comparison of annual epidemic durations (in weeks) across age groups, 2004-2013. Zero indicates no epidemic was defined in some years.
|
0–4yrs |
5–17yrs |
18–64yrs |
65+ yrs |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Virus | mean | (range) | p-value# | mean | (range) | p-value# | mean | (range) | p-value# | mean | (range) | p-value# |
| A(H1N1) | 3.8 | (0,10) | Reference | 2.9 | (0,7) | 0.530 | 2.5 | (0,7) | 0.334 | 1.4 | (0,5) | 0.059 |
| A(H3N2) | 4.0 | (0,10) | Reference | 4.5 | (0,10) | 0.660 | 3.7 | (0,11) | 0.781 | 4.4 | (0,10) | 0.723 |
| A(H1N1)pdm09 | 3.4 | (0,8) | Reference | 2.6 | (0,8) | 0.610 | 3.6 | (0,10) | 1.000 | 2.8 | (0,8) | 0.757 |
| B | 2.8 | (0,9) | Reference | 3.0 | (0,11) | 0.804 | 3.1 | (0,9) | 0.730 | 1.9 | (0,9) | 0.350 |
# p-value of age group comparison using Poisson models.