Table 4.
Psychometric properties at optimal cut-off values for generalized anxiety disorder and any anxiety disorder screening in patients with negative depression screening results
| Cut-off score | N (%) | Sensitivity,% (95% CI) | Specificity,% (95% CI) | PPV,% (95% CI) | NPV,% (95% CI) |
|---|---|---|---|---|---|
|
HADS-D score <5, n = 340 | |||||
|
Generalized anxiety disorder | |||||
| HADS-A ≥ 8 |
49 (14) |
89 (51–99) |
88 (83–91) |
16 (8–10) |
100 (98–100) |
| STAI ≥ 45 |
104 (31) |
89 (51–99) |
71 (66–76) |
8 (4–15) |
100 (97–100) |
| SSAI ≥ 40 |
118 (35) |
89 (51–99) |
67 (61–72) |
7 (3–13) |
100 (97–100) |
|
Any anxiety disorder | |||||
| HADS-A ≥ 8 |
49 (14) |
69 (41–88) |
88 (84–91) |
22 (12–37) |
98 (96–99) |
| STAI ≥ 45 |
104 (31) |
87 (58–98) |
72 (67–77) |
13 (71–21) |
99 (97–100) |
| SSAI ≥ 40 |
118 (35) |
81 (54–95) |
68 (62–73) |
11 (6–18) |
99 (96–100) |
|
BDI-II score <14, n = 370 | |||||
|
Generalized anxiety disorder | |||||
| HADS-A ≥ 8 |
45 (12) |
80 (30–99) |
89 (85–92) |
9 (3–22) |
100 (98–100) |
| STAI ≥ 45 |
110 (30) |
60 (17–93) |
71 (66–75) |
3 (1–8) |
99 (97–100) |
| SSAI ≥ 40 |
126 (34) |
60 (17–93) |
66 (61–71) |
2 (1–7) |
99 (97–100) |
|
Any anxiety disorder | |||||
| HADS-A ≥ 8 |
45 (12) |
50 (20–80) |
89 (85–92) |
11 (4–25) |
98 (96–99) |
| STAI ≥ 45 |
110 (30) |
70 (35–92) |
71 (66–76) |
6 (3–13) |
99 (96–100) |
| SSAI ≥ 40 | 126 (34) | 50 (20–80) | 66 (61–71) | 4 (1–9) | 98 (95–99) |
BDI-II – Beck Depression Inventory-II; CI – confidence interval; HADS -A – Hospital Anxiety and Depression scale – Anxiety subscale; HADS -D – Hospital Anxiety and Depression scale – Depression subscale NPV- negative predictive value; PPV - positive predictive value.