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Table 3 Odds ratio of being asymptomatic if the index is asymptomatic compared to symptomatic

From: Lower transmissibility of SARS-CoV-2 among asymptomatic cases: evidence from contact tracing data in Oslo, Norway

 

Crude

+ Case controls

+ Index controls

Asymptomatic

2.67

2.69

2.72

 

(2.28–3.12)

(2.27–3.19)

(2.27–3.26)

Symptomatic

Ref

Ref

Ref

 

(.)

(.)

(.)

Number of indexes

7786

7715

7689

Number of cases

11,192

11,105

11,066

  1. Legend: Table shows the odds ratio of being asymptomatic if your assumed infector was asymptomatic compared to symptomatic. Crude shows the unadjusted ratio; + Case controls include confounders for the secondary person (age, sex country of birth and number of vaccine doses); and + Index controls additionally adjust for these confounders for the index person. Note that this is not conditional on being tested. For full regression models and conditionality on being tested see Additional file 1: Supplementary Table 3.