Table 3.

Means and standard deviations of COVID-19 safety protocol behavior engagement, perceived norms, and perceived effectiveness by state response timing.

	Early Response M (SD)	Late Response M (SD)
Social Distancing Behavior	70.01 (2.34)	6.24 (2.84)
Indoor Mask Behavior	4.83 (0.53)	4.61 (0.87)
Outdoor Mask Behavior	40.07 (1.13)	3.23 (1.48)
Indoor Mask Norms	4.25 (0.53)	3.71 (0.87)
Outdoor Mask Norms	3.33 (0.91)	2.59 (0.94)
Indoor Mask Perceived Effectiveness	4.79 (0.44)	4.50 (0.70)
Outdoor Mask Perceived Effectiveness	4.54 (0.63)	4.13 (0.78)

N = 476–490. Using independent sample t-tests, all means significantly differed by response timing at p < 0.01. Early response is defined as a stay-at-home order before 1 April 2020. Late response is defined as a stay-at-home order on 1 April 2020 or later, including states that never implemented an order.