Table 2.
Sleep and pain characteristics of the study population.
| Prehysterectomy | Posthysterectomy | Pa | |
|---|---|---|---|
| Pittsburgh Sleep Quality Indexb | 9 (3.4) | 8 (2.7) | .756 |
| Insomnia Severity Indexb | 11 (4.9) | 7 (7.2) | .068 |
| Sleep diary (self-reported),c minutes | |||
| Sleep-onset latencyb | 38 (30.3) | 33 (37.5) | .439 |
| Wake after sleep onsetb | 26 (15.1) | 52 (22.9) | .014 |
| Total sleep timed | 390 (60) | 420 (72) | .073 |
| Naptime duration | 15 (11.8) | 67 (49.1) | .023 |
| Sleep quality (0 = worst, 10 = best)d | 5 (1.8) | 6 (1.9) | .588 |
| Actigraphy (objective)c | |||
| Sleep-onset latency,b minutes | 42 (41.3) | 36 (21.8) | .293 |
| Wake after sleep onset,b minutes | 52 (25.4) | 72 (20.6) | .060 |
| Total sleep time,d minutes | 384 (102) | 468 (96) | .023 |
| Sleep efficiency,d % | 75 (18.2) | 78 (6.8) | .324 |
| PROMIS Pain Intensity–3A | 56 (6.2) | 51 (6.8) | .059 |
| PROMIS Pain Behavior–7A | 61 (6.1) | 62 (6.1) | .188 |
| Short Form–36 Physical Functioninge | 68 (22.4) | 49 (24.7) | .031 |
| Daily pain diary ratingc | |||
| Average pain (0: none, 10: most severe) | 2.2 (1.7) | 3.8 (2.0) | .050 |
| Worst pain (0: none, 10: most severe) | 3.7 (2.8) | 5.0 (2.6) | .057 |
| Short Form McGill Pain Questionnaire | |||
| Affective pain | 9.4 (4.2) | 7.2 (3.3) | .366 |
| Sensory pain | 28.3 (6.7) | 18.3 (6.7) | .018 |
| Total score | 37.7 (10.1) | 25.5 (9.5) | .046 |
Sample size = 16. Values are presented as means (SDs). PROMIS = Patient-Reported Outcomes Measurement Information System.
Within-subjects (pre/post hysterectomy) differences were assessed using repeated-measures analysis of variance.
Lower score/value indicates better sleep for (1) Pittsburgh Sleep Quality Index, (2) Insomnia Severity Index, (3) sleep-onset latency, and wake after sleep onset (sleep diary/actigraphy).
Daily diary ratings and actigraphy data were averaged over 7 days immediately prior to hysterectomy for prehysterectomy values and 7 days immediately following hysterectomy for posthysterectomy values.
Higher value indicates better sleep for (1) total sleep time (sleep diary/actigraphy), (2) sleep quality (sleep diary), (3) sleep efficiency (actigraphy).
Higher pain score indicates greater pain for all measures except for Short Form–36 Physical Functioning, where a high score indicates greater physical functioning.