Table 1.

Concordance rate, κ value, sensitivity, specificity, positive predictive value, and negative predictive value when comparing self-report and program records of screening behavior in an asymptomatic, average risk sample

StatisticValue95% CI*
Concordance97.57%96.27-98.87%
κ0.940.91-0.98
Sensitivity98.37%97.30-99.44%
Specificity95.78%94.08-97.48%
Positive predictive value98.11%96.96%-99.26%
Negative predictive value96.36%94.77%-97.95%
  • Abbreviation: 95% CI, confidence interval.

  • * Calculated using formula from Harper and Reeves (28).