Table 2.
Correlations among the main study variables.
| Variable | PS | PSQI | SI | PE |
|---|---|---|---|---|
| PS | 1 | |||
| PSQI | 0.503*** | 1 | ||
| SI | 0.444*** | 0.575*** | 1 | |
| PE | −0.138*** | −0.306*** | −0.286*** | 1 |
***p < 0.001.
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