Table 4.
Coefficient values and adjusted R2 values of the linear segmented regression model integrating dates of nationwide lockdown enforcement and of acral lesion–related press releases in France, Spain, and the United States.
| Trends | France | Spain | United States | |||||
|
|
Variation coefficient (SE) | P value | Variation coefficient (SE) | P value | Variation coefficient (SE) | P value | ||
| Constant | 23.89a (2.65) | <.001 | 37.77a (3.21) | <.001 | 68.08a (3.20) | <.001 | ||
| Secular trend | –0.05 (0.05) | .32 | –0.07 (0.07) | .35 | –0.16b (0.06) | .01 | ||
| Change in level after lockdown | –7.45 (5.61) | .19 | –9.01 (5.87) | .13 | –1.38 (4.63) | .77 | ||
| Change in trend after lockdown | 1.06b (0.42) | .01 | 0.51 (0.33) | .12 | 0.49 (0.29) | .09 | ||
| Change in level after press releases | 18.95b (5.77) | .001 | 31.31a (6.31) | <.001 | 11.24b (4.93) | .02 | ||
| Change in trends after press releases | –1.82a (0.45) | <.001 | –1.10b (0.38) | .004 | –0.09 (0.42) | .83 | ||
| Adjusted R2 | 0.311 | —c | 0.351 | — | 0.305 | — | ||
aP<.001
bP<.05.
cNot applicable.