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Demographic information of the participants in current study.
| Variable | Control (n = 28) | Insomnia (n = 26) | t/χ2-value | p-value |
| Age (years) | 39.96 ± 9.13 | 41.50 ± 9.01 | 0.622 | 0.537 |
| Gender (male/female)a | 13/15 | 8/18 | 1.391 | 0.238 |
| Education (years) | 13.64 ± 2.97 | 9.65 ± 3.73 | 4.325 | 0.00 |
| PSQI | 4.29 ± 2.05 | 13.62 ± 3.56 | 11.691 | 0.00 |
| SAS | 29.75 ± 7.41 | 53.04 ± 10.12 | 9.701 | 0.00 |
| SDS | 17.14 ± 11.15 | 46.00 ± 9.61 | 10.151 | 0.00 |
aChi-square test.
