Table 2.

Coding of variables to compute risky social mixing variable.

Variable	Question text	Response options	Risk level
Setting (indoors/outdoors)	And still thinking about only the last occasion you met up with friends and/or family, were you indoors or outdoors? [People in wave 44 were asked a slightly different version of this question. Therefore, we have excluded them from analyses]	Exclusively outdoors	Lowest (“exclusively outdoors”)
		Mostly outdoors	Medium (“mostly outdoors”)
		Equally split between indoors and outdoors	Highest (“indoors”)
		Mostly indoors	Highest (“indoors”)
		Exclusively indoors	Highest (“indoors”)
Close contact	Again, thinking about the last occasion you met with friends and/or family that you don’t live with, did people stay at least 2 m apart?	Yes, at all times	Lowest (“distanced”)
		Yes, most of the time	Lowest (“distanced”)
		Yes, some of the time	Highest (“not distanced”)
		No—not at all	Highest (“not distanced”)
Total number of households	The last time you met with friends and/ or family that you don’t live with, how many households (not people) did those people come from? Don’t include your own household in this number	Scale	Question + 1 (to include own household)
			Lowest (“2”)
			Highest (“3+”)
Number of people from other households	And still thinking about the last time you met friends and/or family that you don’t live with, how many people from outside your household were there?	Scale	Lowest (“ ≤ 2”)
			Highest (“ ≥ 3”)