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Table 5 Multinomial logistic regression of modality of contact before registering (95% confidence intervals)

From: Characterizing participants who respond to text, email, phone calls, or postcards in a SARS-CoV-2 prevalence study

Characteristics*

Reference: Robocalls/texts

Postcards

Text/Emails

P-Value

Female

--

--

--

0.036

Male

1.0

1.09 (0.84–1.44)

1.22 (1.04–1.42)

Age

    

Age: <40

--

--

--

0.005

Age: 40–59

1.0

1.16 (0.86–1.55)

0.869 (0.72–1.1)

Age: 60+

 

1.73 (1.25–2.39)

0.94 (0.77–1.14)

Education

    

High School or less

--

--

--

< 0.0001

1–3 years College

1.0

0.37 (0.25–0.55)

0.86 (0.69–1.07)

4 years + College

1.0

0.35 (0.24–0.52)

0.64 (0.53–0.77)

Symptoms

    

Participants reported having 0 symptoms

--

--

--

0.308

Participant reported having 1 symptom

1.0

1.40 (0.96–2.05)

1.15 (0.92–1.43)

Participant reported having 2 symptoms

1.0

1.14 (0.77–1.7)

1.03 (0.81–1.31)

Participant reported having 3 or more symptoms

1.0

1.49 (1.02–2.17)

1.073 (0.87–1.33)

Free Testing: Not Important

--

--

--

0.036

Free Testing: Important

1.0

1.01 (0.82–1.49)

1.27 (1.06–1.53)

No Previously Positive Household Member

--

--

--

0.334

Previously Positive Household Member

1.0

1.98 (0.26–15.2)

0.42 (0.13–1.44)

  1. * Characteristics that were statistically significant in the chi sq analysis were fitted in the regression model