Table 3

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

ItemEntire sample
(95% CI)
Random subsamplesMen
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
Sensitivity0.64 (0.58 to 0.69)0.60, 0.680.690.640.630.720.630.600.67
Specificity0.90 (0.87 to 0.92)0.88, 0.910.930.890.890.970.920.900.83
Positive predictive power0.72 (0.67 to 0.77)0.68, 0.770.730.720.710.900.760.690.62
Negative predictive power0.86 (0.84 to 0.87)0.84, 0.870.910.850.850.890.860.850.86