Table 5 Comparison of mental health status between 2016, 2020, and 2021 in the NHTD.
| Â | 2016 surveya | 2020 surveya | 2021 surveya | pb |
|---|---|---|---|---|
Pre-COVID | Post-COVID | |||
General distress (DASS-21-V)c | ||||
 ≥ 34 | – | 66 (7.5) | 78 (8.8) | 0.24 |
Depression (CES-D)d | ||||
 ≥ 16 | 229 (27.9) | – | 137 (16.7) | < 0.001 |