Table 1.
List of variables and modelling approaches.
| List of variables | Variable type | Modelling approaches | ||
|---|---|---|---|---|
| Time series GLM | Regularized GLM | Quantile regression forest | ||
| Count of norovirus laboratory reports | Outcome/target | ✓ | ✓ | ✓ |
| 3-week rolling mean | Covariate/feature | ✓ | ✓ | |
| Seasonal pattern fitted with Fourier terms | Covariate/feature | ✓ | ✓ | |
| Central England Temperature | Covariate/feature | ✓ | ✓ | ✓ |
| Google Trends | Covariate/feature | ✓ | ✓ | ✓ |
| Google Community Mobility | Covariate/feature | ✓ | ✓ | ✓ |
| Categorical indicators: | ||||
| Christmas (week 52 every year) | Covariate/feature | ✓ | ||
| Early Covid-19 pandemic (weeks 12 to 26, 2020) | Covariate/feature | ✓ | ||
| Covid-19 pandemic (week 12, 2020–week 26, 2021) | Covariate/feature | ✓ | ||