Table 1 The first two principal component loadings across 200 countries illustrate the magnitude of reporting trends by day of week, with coefficients above 10 highlighted in bold
From: Identification and attribution of weekly periodic biases in global epidemiological time series data
Day | PC1 | PC2 |
|---|---|---|
Monday | 3.59 | 17.12 |
Tuesday | 8.45 | 0.64 |
Wednesday | 6.83 | − 4.89 |
Thursday | 4.99 | − 6.07 |
Friday | 2.17 | − 5.15 |
Saturday | − 11.32 | − 4.82 |
Sunday | − 14.71 | 3.17 |
% variation | 36.4 | 29.9 |