Table 2.
Activity prediction variables model for 2005–2009
| Parameter | Estimatea | 95% CI |
|---|---|---|
| Periodic function | 0.55 | NA |
| Year (long-term trend) | + 7.10 | (4.36 to 9.85) |
| Day of the week (Fridayb is reference) | ||
| Monday | − 3.02 | (− 14.16 to 8.13) |
| Tuesday | − 14.62 | (− 25.71 to − 3.54) |
| Wednesday | − 5.75 | (− 16.83 to 5.35) |
| Thursday | + 1.96 | (− 9.14 to 13.07) |
| Saturday | + 251.75 | (240.64 to 262.86) |
| Sunday | + 376.07 | (364.96 to 387.19) |
| School and public holidays | ||
| Public holiday | + 295.03 | (277.18 to 312.87) |
| Christmas vacation | + 89.05 | (72.16 to 105.94) |
| Winter vacation | + 12.10 | (− 6.25 to 30.46) |
| Autumn vacation | − 3.81 | (− 20.00 to 12.39) |
| Summer vacation | − 4.44 | (− 13.12 to 4.24) |
| Winter vacation (Paris area) | − 8.23 | (− 24.26 to 7.81) |
| Spring vacation | − 15.83 | (− 30.09 to − 1.57) |
| Epidemics | ||
| Influenza incidence (within 100 ± cases / 100,000 inhabitants the previous week)c | + 5.76 | (4.08 to 7.45) |
| Gastroenteritis incidence (within ± 100 cases /100,000 inhabitants the previous week)c | + 4.74 | (0.32 to 9.16) |
aRepresents the number of cases independently attributable to the variable in multivariate analysis
bFriday was chosen as a reference because it is the median day in terms of activity
cin the local administrative area, called a “département” in France, about the size of a county