Table 1.
Regression analyses to detect potential association between novel data streams (Google Trends, WikiTrends, Google News, and YouTube) and real-world epidemiological figures.
| Source | Regression coefficient | SE | 95% CI | t31 | P value | |
| Google Trends | ||||||
| Intercept | 3327.876 | 966.213 | 1380.603, 5275.150 | 3.444 | .001 | |
| Trimester | –0.531 | 1.535 | –3.624, 2.561 | –0.346 | .73 | |
| Year | –1.653 | 0.481 | –2.622, –0.684 | –3.438 | .001 | |
| West Nile virus cases | 0.014 | 0.001 | 0.011, 0.017 | 9.629 | <.001 | |
| WikiTrends | ||||||
| Intercept | –7402.427 | 4130.337 | –15863.039, 1058.184 | –1.792 | .08 | |
| Trimester | 1.715 | 4.288 | –7.068, 10.498 | 0.400 | .69 | |
| Year | 3.694 | 2.053 | –0.512, 7.900 | 1.799 | .08 | |
| West Nile virus cases | –0.003 | 0.005 | –0.012, 0.007 | –0.566 | .58 | |
| Google News | ||||||
| Intercept | 8875.080 | 3807.169 | 1076.447, 16673.712 | 2.331 | .03 | |
| Trimester | 1.478 | 3.952 | –6.618, 9.574 | 0.374 | .71 | |
| Year | –4.407 | 1.893 | –8.284, –0.530 | –2.328 | .03 | |
| West Nile virus cases | –0.001 | 0.004 | –0.010, 0.008 | –0.237 | .81 | |
| YouTube | ||||||
| Intercept | 3297.355 | 3606.758 | –4090.754, 10685.464 | 0.914 | .37 | |
| Trimester | 3.454 | 3.744 | –4.216, 11.124 | 0.923 | .36 | |
| Year | –1.622 | 1.793 | –5.295, 2.051 | –0.904 | .37 | |
| West Nile virus cases | –0.002 | 0.004 | –0.010, 0.007 | –0.453 | .65 | |