Table 5 Summary of missing data from pharmacological intervention study
From: Clinical review: Sleep measurement in critical care patients: research and clinical implications
Method | Nights missing data | Reasons |
|---|---|---|
Bispectral index | 11/91 (12.1%) Average 11.8 minutes lost per 9-hour night studied (2.2%) | Patient removed sensor (4) Signal quality index low (3) Hardware failure (2) Patient refused (2) |
Patient assessment (Richards-Campbell Sleep Questionnaire) | 17/91 (18.7%) | Delirium (16) Patient unable to complete (1) |
Nurse assessment | 23/91 (25.3%) | Unable to evaluate (too busy, forgot, or unsure of sleep status) |
Actigraphy | 0/91 (0%) | Not applicable |