Emergency teleradiological activity is an epidemiological estimator and predictor of the covid-19 pandemic in mainland France

Insights into Imaging

Table 2 Significant consecutive cross-correlations between the weekly emergency teleradiological time series and the weekly number of hospitalisations time series

Lag with no. of hospitalisations	No. of CT-scans performed in the COVID-19 workflow	Percentage of activity of the COVID-19 workflow
5 weeks before	–	0.37
4 weeks before	0.42	0.46
3 weeks before	0.57	0.57
2 weeks before	0.72	0.7
1 week before	0.86	0.82
Same week	0.93	0.9
1 week after	0.84	0.78
2 weeks after	0.69	0.55
3 weeks after	0.42	–