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Differences of the total score of PHQ-9, GAD-7 and ISI during the COVID-19 pandemic and before the outbreak.
| Before COVID-19 pandemic (Mean ± SD) (n = 2,273) | During COVID-19 pandemic (Mean ± SD) (n = 2,273) | Mean difference (95%CI) | Z | P-value | |
|---|---|---|---|---|---|
| PHQ-9 | 2.43 ± 3.37 | 3.70 ± 3.84 | 1.26 (1.17–1.36) | −25.63 | <0.01 |
| GAD-7 | 1.45 ± 2.81 | 2.03 ± 3.20 | 0.58 (0.49–0.66) | −15.27 | <0.01 |
| ISI | 4.63 ± 4.31 | 5.54 ± 4.62 | 0.08 (0.06–0.09) | −21.09 | <0.01 |
