Table 1.

Total sample size, exclusions, and final sample size per wave.

Wave and sample		Value, n (%)	Retention rate, %a
T0 (baseline): April 27-29, 2020
	Total sample	1212 (100)	N/Ab
	Excludedc	10 (0.8)	N/A
	Final sample	1202 (99.2)	N/A
T1 (first follow-up wave): May 4-7, 2020
	Total sample	1089 (100)	N/A
	Excludedc	11 (1.0)	N/A
	Final sample	1078 (99.0)	89.7
T2 (second follow-up wave): May 11-14, 2020
	Total sample	1070 (100)	N/A
	Excludedc	3 (0.3)	N/A
	Final sample	1067 (99.7)	88.8
T3 (final wave): May 18-21, 2020
	Total sample	1028 (100)	N/A
	Excludedc	6 (0.6)	N/A
	Final sample	1022 (99.4)	85.0

^aThe retention rate is based on the final sample sizes of T0 and the respective wave. Total sample sizes of follow-up waves were counted, excluding 2 participants who should have been excluded but had been allowed to participate in the follow-up waves due to a technical error.

^bN/A: not applicable; retention rates were calculated using final sample sizes of T0 and the follow-up waves.

^cMore details on exclusions can be found in the Statistical Analysis, Data Exclusion section.