Table 2

Performance of two-item Tipping Point Index (minimum one item endorsed) for prediction of significant anxiety or depression

ItemEntire sample
(95% CI)
Random
subsamples
Men
n=73
Women
n=960
White
n=952
Black and minority ethnic
n=84
Hospital
n=554
Nursing or care home
n=157
Other community setting
n=307
Sensitivity0.95 (0.92 to 0.97)0.93, 0.971.00.950.951.00.960.960.93
Specificity0.60 (0.56 to 0.63)0.58, 0.610.790.580.590.660.610.490.62
Positive predictive power0.49 (0.47 to 0.52)0.48, 0.510.570.490.490.560.500.440.48
Negative predictive power0.97 (0.95 to 0.98)0.96, 0.981.00.960.961.00.970.960.96