Table 3.
Mean incidence rate ratios (IRR) and 95 % confidence intervals for incidence of acute myocardial infarction for each weekday of the first week
| Spring predicition modela | Autumn predicition modelb | |
|---|---|---|
| Weekday | IRR [95 % CI] | IRR [95 % CI] |
| Sunday | 0.937 [0.732; 1.141] | 0.881 [0.667; 1.095] |
| Monday | 1.207 [0.915; 1.500] | 0.850 [0.572; 1.129] |
| Tuesday | 1.185 [0.852; 1.519] | 1.135 [0.861; 1.409] |
| Wednesday | 1.075 [0.854; 1.297] | 1.077 [0.832; 1.321] |
| Thursday | 1.098 [0.809; 1.388] | 1.133 [0.883; 1.383] |
| Friday | 1.203 [0.950; 1.457] | 1.244 [1.035; 1.453] |
| Saturday | 0.850 [0.657; 1.043] | 0.892 [0.657; 1.127] |
aSpring model adjusted for time trend and same day mean relative humidity as regression splines with six and three degrees of freedom, same day
bAutumn model adjusted for time trend and same day mean temperature as linear terms, same day mean relative humidity as regression spline with three degrees of freedom, and month and weekday as categorical variables