Table 3 Possible motivators for participating by modality

Feel good contributing to research

Not important/barely important (n = 131)

Somewhat/Very important (n = 3,527)

9 (6.9%)

279 (7.9%)

25 (19.1%)

943(26.7%)

97 (74.1%)

2,402 (65.4%)

0.104

Gaining knowledge of own Covid-19 status

Not important/barely important (n = 231)

Somewhat/Very important (n = 3,427)

17 (7.4%)

271 (7.9%)

48 (20.8%)

920 (26.9%)

166 (71.9%)

2,236 (65.3%)

0.276

Testing is free of charge

Not important/barely important (n = 782)

Somewhat/Very important (n = 2,876)

66 (8.5%)

222 (7.7%)

235(30.1%)

733 (25.5%)

481 (61.5%)

1,921 (66.8%)

0.019

Covid-19 Positivity

PCR Positive (n = 47)

5 (1.7%)

10 (1.0%)

32 (1.3%)

0.610

Antibody Positive (n = 54)

4 (1.4%)

12(1.2%)

38 (1.6%)

0.837

Any positivity (PCR or Antibody) (n = 85*)

8 (2.8%)

17 (1.8%)

60 (2.5%)

0.376

Household Exposure

Someone in household was previously positive for Covid-19 (n = 52)

3 (5.8%)

6 (11.5%)

43 (82.7%)

0.029