Table 1:
Demographie, Epidemiologie, and Symptom-related Characteristics of Participants
| Confirmed Bolinas Residents N=1,312 |
All Participants N=1,891 |
|
|---|---|---|
| Distribution of Participants | ||
| Confirmed Bolinas residents | 1,312 (100%) | 1,312 (69%) |
| Non-Bolinas first-responders, essential workers, and family members | 0 (0%) | 76 (4%) |
| Non-Bolinas resident volunteers | 0 (0%) | 47 (2%) |
| Onsite registration: likely Bolinas residents, essential workers, or county first responders* | 0 (0%) | 456 (24%) |
| Demographic Characteristics | ||
| Age | ||
| <18 | 139 (11%) | 193 (10%) |
| 18–44 | 363 (28%) | 596 (32%) |
| 45–60 | 319 (24%) | 444 (23%) |
| 60 and older | 490 (37%) | 657 (35%) |
| Sex | ||
| Male | 521 (46%) | 635 (46%) |
| Female | 599 (52%) | 705 (52%) |
| Declined to state | 22 (2%) | 25 (2%) |
| Race/ethnicity | ||
| White/Caucasian | 964 (80%) | 1,141 (79%) |
| Black/African American | 8 (1%) | 12 (1%) |
| Hispanic/Latinx | 60 (5%) | 83 (6%) |
| Asian/Pacific Islander | 23 (2%) | 32 (2%) |
| Other or Declined | 153 (13%) | 176 (12%) |
| Income | ||
| <50,000 | 295 (33%) | 329 (31%) |
| 50k-100k | 275 (30%) | 326 (31%) |
| >100k | 337 (37%) | 412 (39%) |
| Common occupations | ||
| Retired | 202 (18%) | 220 (17%) |
| Arts & entertainment (e.g. artist, musician, etc.) | 117 (11%) | 129 (10%) |
| Student | 99 (9%) | 114 (9%) |
| Tradesperson (e.g. construction, carpenter, plumber, etc.) | 76 (7%) | 93 (7%) |
| Education & teaching | 78 (7%) | 89 (7%) |
| Healthcare | 51 (5%) | 83 (6%) |
| Agriculture | 45 (4%) | 47 (4%) |
| All other | 424 (39%) | 520 (40%) |
| Epidemiologic & Behavioral Characteristics | ||
| Estimated number of times participants** left the house per week for: | ||
| Work (median, IQR) | 0 (0–1) | 0 (0–1) |
| Food | 1 (1–2) | 1 (1–2) |
| Other | 1 (0–2) | 0 (0–2) |
| Endorsed mask-wearing | 984 (92%) | 1,136 (93%) |
| Reported travel outside Bolinas in the 2 weeks prior to testing | 244/346 (73%) | 322/442 (73%) |
| Symptom Reporting | ||
| Symptoms on day of testing*** | ||
| No symptoms | 1,171 (89%) | 1,697 (90%) |
| Any symptom below | 32 (2%) | 42 (2%) |
| Fever | 1 (0%) | 2 (0%) |
| Cough | 19 (1%) | 24 (1%) |
| Muscle aches | 1 (0%) | 1 (0%) |
| Severe fatigue | 4 (0%) | 6 (0%) |
| Trouble breathing | 6 (6%) | 7 (0%) |
| Diarrhea | 4 (0%) | 4 (0%) |
| Loss of smell | 0 (0%) | 1 (0%) |
| Loss of taste | 0 (0%) | 1 (0%) |
| No response/missing | 109 (8%) | 152 (8%) |
| Symptoms in month prior to testing | ||
| Any symptom below | 350 (31%) | 406 (31%) |
| Fever | 77 (7%) | 95 (7%) |
| Cough | 214 (19%) | 250 (9%) |
| Muscle aches | 143 (13%) | 177 (14%) |
| Severe fatigue | 134 (12%) | 162 (13%) |
| Trouble breathing | 72 (6%) | 85 (7%) |
| Diarrhea | 108 (10%) | 125 (10%) |
| Loss of smell | 18 (2%) | 26 (2%) |
| Loss of taste | 18 (2%) | 29 (2%) |
*
All pre-registered participants provided their zip code to gate entry to Bolinas residents with optional street address provision, or indicated status as first responder/essential worker online. Participants who registered onsite were verbally asked whether they were a Bolinas resident, essential worker, or Marin County first responder, but responses were not recorded online.
**
n=l,199 participants provided responses, 1,047 were confirmed Bolinas residents.
***
AII participants were asked about symptoms (both pre-registered and onsite-registered participants).