Pearson correlations (95% CI) by geography in each season
| All seasons | 2013–2014 | 2014–2015 | 2015–2016 | 2016–2017 | |
| State | 0.387 (0.362 to 0.394) | 0.300 (0.261 to 0.308) | 0.214 (0.193 to 0.243) | 0.051 (0.015 to 0.057) | 0.025 (0.002 to 0.040) |
| HHS region | 0.467 (0.445 to 0.483) | 0.690 (0.650 to 0.714) | 0.573 (0.539 to 0.600) | 0.137 (0.090 to 0.179) | 0.244 (0.213 to 0.272) |