Table 3 Distribution of positive and negative results at the 2022 health physical, by serology assay type (n = 2538)a.

From: Seroprevalence of SARS-CoV-2 antibodies among Japanese healthcare workers from 2020 to 2022 as assayed by two commercial kits

Roche Elecsys Anti-SARS-CoV-2 results (n)

Abbott Alinity SARS-CoV-2 IgG results (n)

Percentage agreement

kª Statistic (95% CI)

Positive resultsb

Negative results

Total

Positive

303

117

420

94.4%

0.78 (0.75–0.82)

Negative

24

2094

2118

  

Total

327

2211

2538

  
  1. aData in this table reflect the testing results by the timepoint of 2022 annual health physical.
  2. bPositive results include those of grayzone for Abbott Alinity SARS-CoV-2 IgG assay.
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