Table 1.
Effect of country-specific covariates on HealthMap performance in detecting influenza outbreaks from January 2013 to July 2019.
| Outcome, covariate | Category/increment | Coefficient (95% CI) | P value | Adjusted R² | ||
| Sensitivity | 0.456 | |||||
|
|
|
Log (total reports) | 1 log | 0.039 (–0.012 to 0.091) | .13 |
|
|
|
|
Human development index | 1 score | 0.017 (0.008 to 0.025) | <.001 |
|
|
|
|
Press freedom index | 1 score | 0.003 (–0.001 to 0.008) | .10 |
|
|
|
|
Official language (reference: not English) | English | –0.128 (–0.313 to 0.057) | .16 |
|
| Positive predictive value | ||||||
|
|
Specificity | 0.144 | ||||
|
|
|
Human development index | 1 score | –0.004 (–0.009 to 0.001) | .11 |
|
|
|
|
Press freedom index | 1 score | –0.003 (–0.005 to –0.0003) | .03 |
|
|
|
Timeliness | 0.504 | ||||
|
|
|
Log (total reports) | 1 log | 0.047 (0.013 to 0.082) | .009 |
|
|
|
|
Human development index | 1 score | 0.007 (–0.001 to 0.015) | .08 |
|
|
|
|
Latitude | 1° | 0.004 (–0.001 to 0.009) | .12 |
|