Table 2.
Correlation coefficients between the main variables
| Global Sleep Quality |
Sleep Duration (contin.) |
Sleep Latency |
Sleeping Medication |
General Perceived Stress |
Body Mass Index |
|
|---|---|---|---|---|---|---|
| Global Sleep Quality | ****** | -0.65* <.0001§ |
0.70 <.0001 |
0.45 <.0001 |
0.36 <.0001 |
0.13 <.0001 |
| Sleep Duration (continuous†) | ****** | -0.27 <.0001 |
-0.09 0.0006 |
-0.16 <.0001 |
-0.12 <.0001 |
|
| Sleep Latency | ****** | 0.29 <.0001 |
0.26 <.0001 |
0.04 0.17 |
||
| Use of Sleeping Medication | ****** | 0.18 <.0001 |
0.08 0.004 |
|||
| General Perceived Stress | ****** | 0.08 0.002 |
*Spearman correlation coefficient;
§P-value for statistical significance;
†Considered continuously.