PGI-S SD categories | N | LS mean (SE) | 95% CI | p value | Contrast p value |
|---|
No problems | 70 | 16.94 (0.60) | 15.76, 18.13 | < 0.0001 | |
Mild problems | 233 | 22.47 (0.33) | 21.82, 23.12 | | < 0.0001 |
Moderate problems | 484 | 27.31 (0.23) | 26.86, 27.76 | | < 0.0001 |
Severe problems | 232 | 33.04 (0.33) | 32.39, 33.70 | | < 0.0001 |
- p value is based on analysis of variance comparisons with alpha = 0.05 level. Contrast p value comparisons examined adjacent PGI-S SD groups, i.e., “no problems” versus “mild problems”, “mild problems” versus “moderate problems”, and “moderate problems” versus “severe problems”
- CI Confidence interval, LS Least squares, PGI-S SD Patient Global Impression of Severity Sleep Disturbance, PROMIS SD-SF-8b Patient-Reported Outcomes Measurement Information System Sleep Disturbance – Short Form 8b, SE Standard error
