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Table 2 Odds ratios with 95% confidence intervals for each of the evaluated risk factor

From: Pre-vaccination RT-PCR negative contacts in workplace settings show high, SARS COV-2 neutralizing antibody levels

Risk factor

Odds Ratio

95% Confidence interval

P value

Workspace exposure

1.11

0.35– 2.59

 > 0.99

Travel exposure

0.59

0.72– 4.06

0.28

Face to face contact with no mask for > 15 min

5.58

1.29– 25.65

0.02

Eat/socialize together with no protective measures

0.54

0.19– 1.71

0.42

Share items at meals/clothing/other

1.93

0.69- 5.58

0.31