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Table 1 Self-samples versus investigator-samples per sampling site

From: Self-sampling is appropriate for detection of Staphylococcus aureus: a validation study

Nasal samples Investigator-samples Total
   SApos SAneg  
Self-samples SApos 30 6 36
  SAneg 1 68 69
  Total 31 74 105
Agreement 93%  
Kappa coefficient 0.85 (CI 0.74-0.96)  
A. Nasal samples. SApos: S. aureus positive; SAneg: S. aureus negative; CI: confidence interval.
Pharyngeal samples Investigator-samples Total
   SApos SAneg  
Self-samples SApos 23 13 36
  SAneg 5 64 69
  Total 28 77 105
Agreement 83%  
Kappa coefficient 0.60 (CI 0.43-0.76)  
  1. B. Pharyngeal samples. SApos: S. aureus positive; SAneg: S. aureus negative; CI: confidence interval.