Table 1 Descriptive statistics and correlations among the key variables (n = 3250)
Variables | M ± SD | 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|---|---|
1 PSQI score | 5.082 ± 3.436 | 1 |  |  |  |  |
2 Barthel Index score | 91.699 ± 18.350 | −0.263** | 1 |  |  |  |
3 Physical activity level | 2.149 ± 0.756 | −0.100** | 0.364** | 1 |  |  |
4 PSSS | 66.155 ± 13.687 | −0.180** | 0.237** | 0.228** | 1 |  |
5 DASS-21 score | 19.142 ± 20.566 | 0.444 ** | −0.473** | −0.217** | − 0.320** | 1 |