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. 2022 Apr 29;17(4):e0267790. doi: 10.1371/journal.pone.0267790

Table 1. Study design and sample size information.

  Wave 1 Wave 2 Wave 3 Wave 4
Date March 2–8, 2020 March 23–29, 2020 May 4–10, 2020 July 8–14, 2020
N participants: Cohort A 98 N/A 89 71
N participants: Cohort B N/A 86 79 64
Total N participants 98 86 168 135
Total N observations 3085 2861 5282 3977