Table 4.
Correlation between subjective sleep and mental health measures (N=38).
| Outcome | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| ISIa | —b | — | — | — | — | — | — |
| FOSQc | –0.60d | — | — | — | — | — | — |
| PSQIe | 0.55d | –0.39f | — | — | — | — | — |
| PCL-5g | 0.55d | –0.69d | 0.47d | — | — | — | — |
| WHYMPIh | 0.41f | –0.36f | 0.38f | 0.49d | — | — | — |
| PHQ-15i | 0.55d | –0.51d | 0.49d | 0.63d | .64d | — | — |
| PHQ-9j | 0.48d | –0.72d | 0.43d | 0.79d | .33f | 0.55d | — |
| Mean (SD) | 15.42 (4.69) | 13.9 (3.31) | 12.05 (4.24) | 22.45 (17.11) | 5.53 (4.93) | 8.61 (5.13) | 8.82 (5.79) |
| Range | 7-26 | 7-20 | 3-19 | 3-61 | 0-14 | 2-19 | 1-27 |
aISI: Insomnia Severity Index.
bCorrelation not applicable or redundant.
cFOSQ: Functional Outcomes of Sleep Questionnaire.
dP<.01.
ePSQI: Pittsburgh Sleep Quality Index.
fP<.05.
gPCL-5: Posttraumatic Stress Disorder checklist for Diagnostic and Statistical Manual of Mental Disorders-5.
hWHYMPI: West Haven-Yale Multidimensional Pain Inventory.
iPHQ-15: Patient Health Questionnaire-15.
jPHQ-9: Patient Health Questionnaire-9.