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Table 6 Classification agreement across age and sex groups in the testing sample

From: Using heart rate profiles during sleep as a biomarker of depression

  Group Cohen’s kappa (κ)a n 95% CI p
Sex Female 0.60 99 0.44 to 0.75 <.001
Male 0.60 75 0.42 to 0.78 <.001
Age Group 18–35 0.56 47 0.32 to 0.80 <.001
36–50 0.72 71 0.54 to 0.89 <.001
51–71 0.41 56 0.17 to 0.65 .002
  1. aConcordance between heart rate-based classification and diagnoses documented from medical records