Table 3. Psychological characteristics after PSM analysis.
| Estimated | Standard error | T value | Pr (>|t|) | |
|---|---|---|---|---|
| 3–1. Depression (PHQ-9) | ||||
| Intercept | 3.11730 | 6.85937 | 0.454 | 0.6505 |
| Group (HD) | 3.36699 | 1.33283 | 2.526 | 0.0131* |
| Age | 0.03731 | 0.05596 | 0.667 | 0.5066 |
| Sex (female) | 1.19719 | 1.35198 | 0.886 | 0.3781 |
| Hb | -0.3631 | 0.47516 | -0.764 | 0.4465 |
| Dialysis vintage | -0.08975 | 0.13629 | -0.658 | 0.5118 |
| Sqrt_ferritin | 0.1482 | 0.10117 | 1.465 | 0.1461 |
| 3–2. Anxiety (GAD7) | ||||
| Intercept | 12.29244 | 5.61950 | 2.187 | 0.0311* |
| Group (HD) | 2.72374 | 1.09191 | 2.494 | 0.0143* |
| Age | 0.04469 | 0.04585 | 0.975 | 0.3321 |
| Sex (female) | 1.89810 | 1.10761 | 1.714 | 0.0898 |
| Hb | -0.50174 | 0.38928 | -1.289 | 0.2005 |
| Dialysis vintage | -0.23408 | 0.11166 | -2.096 | 0.0386* |
| Sqrt_ferritin | 0.01621 | 0.08288 | 0.196 | 0.8454 |
| 3–3. Stress (IES-R) | ||||
| Intercept | 5.3586 | 14.9860 | 0.358 | 0.721439 |
| Group (HD) | 10.6478 | 2.9119 | 3.657 | 0.000415*** |
| Age | 0.1221 | 0.1223 | 0.999 | 0.320356 |
| Sex (female) | 1.0765 | 2.9538 | 0.364 | 0.716311 |
| Hb | -0.4678 | 1.0381 | -0.451 | 0.653232 |
| Dialysis vintage | -0.3557 | 0.2978 | -1.194 | 0.235195 |
| Sqrt_ferritin | 0.2319 | 0.2210 | 1.049 | 0.296709 |
| 3–4. Insomnia (ISI) | ||||
| Intercept | 6.13766 | 6.67457 | 0.920 | 0.3601 |
| Group (HD) | 2.41568 | 1.29692 | 1.863 | 0.0655 |
| Age | -0.02545 | 0.05446 | -0.467 | 0.6413 |
| Sex (female) | 2.21071 | 1.31556 | 1.680 | 0.0961 |
| Hb | 0.02079 | 0.46236 | 0.045 | 0.9642 |
| Dialysis vintage | -0.01543 | 0.13262 | -0.116 | 0.9076 |
PSM: propensity score matching; HD: hemodialysis; PD: peritoneal dialysis; PHQ-9: the 9-item Patient Health Questionnaire; GAD-7: the 7-item Generalized Anxiety Disorder scale; IES-R: the 22-item impact of Event Scale-Revised; ISI: insomnia severity index; Sqrt: square root transformation; Hb: hemoglobin.