English version (Cut-offs calculated on hearing population) | |||
Cut-off choice [95Â % bootstrap CI] | PHQ-9 | GAD-7 | |
Equalising | sens = spec | 10 | 8 |
sens, spec | 88Â %, 88Â % [28] | 77Â %, 82Â % [28] | |
BSL version (Cut-offs calculated on Deaf population) | |||
Cut-off choice | PHQ-9 BSL | GAD-7 BSL | |
Maximising | Maximise sens + spec | 10 [8.1, 13.2] | 6 [5.1, 7.2] |
sens, spec | 78Â %, 95Â % | 91Â %, 94Â % | |
Error | 19.3Â % | 8.3Â % | |
LR+ | 16.5 | 15.3 | |
Equalising | sens = spec | 8 [6.5, 8.7] | 6 [5.1, 7.2] |
sens, spec | 86Â %, 81Â % | 91Â %, 94Â % | |
Error | 14.5Â % | 8.3Â % | |
LR+ | 4.6 | 15.3 | |
Prioritising treatment FN:FP = ~1:2 | Cost function: false negative judged twice as bad as false positive | 4 [2.1, 7.2] | 3 [0.0, 3.9] |
sens, spec | 96Â %, 55Â % | 97Â %, 67Â % | |
Error | 10.8Â % | 7.8Â % | |
LR+ | 2.1 | 2.9 |