Table 2 Factors associated with SARS-CoV-2 testing in Tijuana and San Diego

 Male^P

0.91 (0.61,1.36)

 Age^P

1.00 (0.99,1.02)

 Hispanic/Latinx/Mexican

0.25 (0.17,0.37)

 Speaks English

5.06 (2.99,8.58)

 Born in the US

6.57 (4.33,9.97)

 Primary residence in San Diego

5.64 (3.62,8.79)

 Homeless*

2.07 (1.45,2.96)

 Completed high school or its equivalent

5.64 (3.62,8.79)

 Monthly income < 500 USD

0.47 (0.33,0.68)

 # of hours spent on the street on a typical day*

1.04 (1.02,1.07)

 Engaged in sex work*^P

0.79 (0.46,1.36)

 Smoked/snorted/inhaled/vaped methamphetamine*

2.05 (1.39,3.03)

 Smoked/snorted/inhaled cocaine*

3.29 (1.94,5.56)

 Smoked/snorted/inhaled/vaped fentanyl*

4.38 (2.83,6.78)

 Smoked/snorted/inhaled/vaped heroin*

2.31 (1.58,3.40)

 Injected methamphetamine*

2.04 (1.42,2.91)

 Injected fentanyl*

2.43 (1.60,3.68)

 Injected heroin*^P

0.80 (0.48,1.35)

 Years of injection drug use^P

1.00 (0.99,1.02)

 # Times injected drugs per day

0.87 (0.78,0.98)

 GAD-7 anxiety scale

1.04 (1.01,1.07)

 On a scale of 1 to 10, how worried are you of getting COVID-19 (or getting it again)

0.94 (0.88,0.99)

 COVID-19 Misinformation: Does NOT think the virus that causes COVID-19 can be easily spread from one person to another^Y3P

0.87 (0.55,1.36)

 COVID-19 Misinformation: Does NOT think that many thousands of people have died from COVID-19^Y3P

0.67 (0.38,1.19)

 COVID-19 Misinformation: Thinks that most people already have immunity to COVID-19^Y3P

0.89 (0.60,1.31)

 COVID-19 Misinformation: Thinks that you can tell someone has COVID-19 by looking at them^Y3P

1.05 (0.67,1.65)

 COVID-19 Misinformation: Thinks that there are effective treatments for COVID-19 that can cure most people^Y3

0.66 (0.43,1.00)

 COVID-19 Misinformation: Thinks that having COVID-19 is about as dangerous as having the flu^Y3P

1.31 (0.90,1.92)

 COVID-19 Disinformation: Thinks the pharmaceutical industry created the COVID-19 virus ^{Y3 P}

1.24 (0.86,1.80)

 COVID-19 Disinformation: Thinks COVID-19 was created by the Chinese government as a biological weapon ^Y3

1.56 (1.07,2.28)

 COVID-19 Disinformation: Thinks the vaccines given to children for diseases like measles and mumps cause autism ^{Y3 P}

1.29 (0.88,1.89)

 COVID-19 Disinformation: Thinks the pharmaceutical industry created the COVID-19 virus ^{Y3 P}

1.24 (0.86,1.80)

 COVID-19 Disinformation: Thinks that COVID vaccines being offered to ‘people like me’ are not as safe as other COVID vaccines ^Y3

1.58 (1.08,2.33)

 COVID-19 Disinformation: Thinks that COVID vaccines include a tracking device ^{Y3 P}

1.17 (0.77,1.77)

 COVID-19 Disinformation: Thinks that some COVID vaccines could change their DNA ^Y3

1.73 (1.16,2.58)

 Ever had a flu vaccine^Y2

2.71 (1.85,3.97)

 Tested HIV+

0.53 (0.25,1.12)

 Tested HCV+

1.43 (1.00,2.05)

 Has at least one chronic condition (excluding seasonal allergies and acne/skin problems)

2.48 (1.73,3.57)

 # of chronic conditions (excluding seasonal allergies and acne/skin problems

1.40 (1.19,1.65)

 Income worse since COVID began^Y1

0.59 (0.41,0.86)

 Low or very low food security since COVID began

0.70 (0.45,1.08)

 Exposed to someone with COVID-19

4.03 (1.97,8.25)

 Knows someone who died of COVID-19^Y5

1.41 (0.95,2.08)

 Reported being vaccinated for COVID-19

1.66 (1.01,2.75)

 Tested SARS-CoV-2 seropositive^Y6P

1.05 (0.83,1.33)

 Social Distancing

3.68 (2.52,5.39)

 Wore face mask

1.69 (1.05,2.73)

 Most important source of COVID-19-related information: Friends^Y4

0.42 (0.28,0.63)

 Most important source of COVID-19-related information: Doctors/health professionals^Y4

5.20 (2.50,10.8)

 Most important source of COVID-19-related information: Social media^Y4

2.59 (1.52,4.43)

 Incarcerated*

3.19 (1.84,5.53)

 Slept in a shelter/welfare residence*

3.73(1.96, 7.10)

 Overdose*

1.88 (1.18,3.00)

 Tested for HIV or HCV post-COVID

2.10 (1.46,3.02)

 Has been enrolled in a drug treatment program*

3.56 (1.97,6.44)

 Has been enrolled in a methadone or buprenorphine program*

3.67 (1.85,7.25)

 Attended a syringe service program*

3.13 (1.07,9.16)