Table 3 Sensitivity and specificity of the PHQ-2Â N and PHQ-2
From: A new PHQ-2 for Chinese adolescents: identifying core items of the PHQ-9 by network analysis
| Â | Male | Female | ||||||
|---|---|---|---|---|---|---|---|---|
Cutoff | Sensitivity | Specificity | YI | Cutoff | Sensitivity | Specificity | YI | |
Sample 1 | ||||||||
 PHQ-2 N | 1 | 0.99 | 0.54 | 0.53 | 1 | 1.00 | 0.44 | 0.43 |
2 | 0.96 | 0.73 | 0.69 | 2 | 0.98 | 0.65 | 0.63 | |
3 | 0.72 | 0.97 | 0.69 | 3 | 0.74 | 0.96 | 0.70 | |
4 | 0.50 | 0.99 | 0.49 | 4 | 0.51 | 0.99 | 0.50 | |
5 | 0.23 | 1.00 | 0.23 | 5 | 0.25 | 1.00 | 0.25 | |
 PHQ-2 | 1 | 0.99 | 0.48 | 0.47 | 1 | 1.00 | 0.39 | 0.38 |
2 | 0.96 | 0.69 | 0.65 | 2 | 0.98 | 0.61 | 0.59 | |
3 | 0.69 | 0.97 | 0.66 | 3 | 0.71 | 0.96 | 0.67 | |
4 | 0.47 | 0.99 | 0.46 | 4 | 0.47 | 0.99 | 0.47 | |
5 | 0.22 | 1.00 | 0.22 | 5 | 0.23 | 1.00 | 0.23 | |
Sample 2 | ||||||||
 PHQ-2 N | 1 | 0.91 | 0.62 | 0.61 | 1 | 1.00 | 0.51 | 0.51 |
2 | 0.93 | 0.82 | 0.74 | 2 | 0.97 | 0.74 | 0.71 | |
3 | 0.68 | 0.97 | 0.65 | 3 | 0.74 | 0.97 | 0.71 | |
4 | 0.47 | 0.99 | 0.46 | 4 | 0.47 | 0.99 | 0.46 | |
5 | 0.18 | 1.00 | 0.18 | 5 | 0.19 | 1.00 | 0.19 | |
 PHQ-2 | 1 | 0.99 | 0.56 | 0.55 | 1 | 1.00 | 0.46 | 0.45 |
2 | 0.92 | 0.78 | 0.70 | 2 | 0.97 | 0.70 | 0.67 | |
3 | 0.70 | 0.96 | 0.65 | 3 | 0.74 | 0.95 | 0.69 | |
4 | 0.44 | 0.99 | 0.43 | 4 | 0.45 | 0.99 | 0.44 | |
5 | 0.19 | 1.00 | 0.19 | 5 | 0.20 | 1.00 | 0.20 | |