Table 2.
Pearson's correlation analysis.
| Scale | Diagnostic algorithm of PHQ-9 | PHQ-9 | HAMD-17 | HAMD-6 | GAD-7 | PHQ-15 | ISI |
|---|---|---|---|---|---|---|---|
| Diagnostic algorithm of PHQ-9 | 1 | ||||||
| PHQ-9 | 0.807** | 1 | |||||
| HAMD-17 | 0.585** | 0.751** | 1 | ||||
| HAMD-6 | 0.572** | 0.724** | 0.914** | ||||
| GAD-7 | 0.569** | 0.736** | 0.648** | 0.606** | 1 | ||
| PHQ-15 | 0.498** | 0.682** | 0.635** | 0.608** | 0.605** | 1 | |
| ISI | 0.475** | 0.605** | 0.600** | 0.484** | 0.554** | 0.612** | 1 |
**
Correlation is significant at the 0.01 level (2-tailed).
PHQ-9, the Patient Health Questionnaire-9; Diagnostic algorithm of PHQ-9, the score of 5 or more items ≥2, among which at least one item is depressive mood or anhedonia; HAMD, the Hamilton Rating Scale for Depression; GAD-7, the Generalized Anxiety Disorder-7; PHQ-15, the Patient Health Questionnaire for Somatic Symptoms; ISI, the Insomnia Severity Index.