Table 1 Descriptive statistics of PHQ items and scales
From: A new PHQ-2 for Chinese adolescents: identifying core items of the PHQ-9 by network analysis
| Â | Sample 1 | Sample 2 | ||||||
|---|---|---|---|---|---|---|---|---|
Male (n = 34909) | Female (n = 32372) | Cohen’s d | p | Male (n = 7590) | Female (n = 9136) | Cohen’s d | p | |
Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | |||||
Item score | ||||||||
 Anhedonia | 0.67 (0.75) | 0.79 (0.77) | 0.16 |  < 0.001 | 0.60 (0.80) | 0.77 (0.83) | 0.21 |  < 0.001 |
 Mood | 0.54 (0.73) | 0.72 (0.80) | 0.24 |  < 0.001 | 0.43 (0.72) | 0.65 (0.82) | 0.29 |  < 0.001 |
 Sleep | 0.47 (0.77) | 0.60 (0.85) | 0.16 |  < 0.001 | 0.53 (0.84) | 0.72 (0.92) | 0.21 |  < 0.001 |
 Fatigue | 0.59 (0.78) | 0.74 (0.83) | 0.19 |  < 0.001 | 0.51 (0.77) | 0.69 (0.84) | 0.22 |  < 0.001 |
 Appetite | 0.50 (0.76) | 0.60 (0.82) | 0.13 |  < 0.001 | 0.39 (0.72) | 0.56 (0.83) | 0.22 |  < 0.001 |
 Guilt | 0.56 (0.82) | 0.75 (0.91) | 0.22 |  < 0.001 | 0.55 (0.83) | 0.83 (0.96) | 0.31 |  < 0.001 |
 Concentration | 0.44 (0.72) | 0.53 (0.77) | 0.13 |  < 0.001 | 0.43 (0.76) | 0.54 (0.81) | 0.14 |  < 0.001 |
 Motor | 0.40 (0.72) | 0.43 (0.75) | 0.04 |  < 0.001 | 0.36 (0.70) | 0.39 (0.72) | 0.05 | 0.001 |
 Suicide | 0.29 (0.65) | 0.43 (0.77) | 0.20 |  < 0.001 | 0.22 (0.58) | 0.36 (0.71) | 0.20 |  < 0.001 |
 PHQ-9 total score | 4.46 (5.60) | 5.60 (5.60) | 0.21 |  < 0.001 | 4.02 (4.98) | 5.51 (5.65) | 0.28 |  < 0.001 |
 PHQ-2 N total score | 0.94 (1.32) | 1.34 (1.49) | 0.24 |  < 0.001 | 0.93 (1.32) | 1.34 (1.49) | 0.28 |  < 0.001 |
 PHQ-2 total score | 1.03 (1.33) | 1.42 (1.47) | 0.22 |  < 0.001 | 1.03 (1.33) | 1.42 (1.47) | 0.28 |  < 0.001 |