0712 SUBJECTIVE SLEEPINESS IN SHIFT WORK DISORDER
Bibliographic record
Abstract
Excessive sleepiness is a main symptom of shift work disorder (SWD). However, shift worker’s perception and clinical evaluation sometimes offer different views of excessive sleepiness. Time course of sleepiness over a 24-hour period according to different work schedules remains understudied. The present study aims at identifying sleepiness specific to shift workers with SWD working under two different work schedules. 80 night-shift workers of whom 43 met SWD criteria were recruited. They worked 6 to 10 nights out of 14. Night shifts were either consecutive (CNS) or fragmented (FNS), for which nights were intervened with free days. Participants without SWD and satisfied with sleep were identified as good sleepers (GS). Four groups were created: CNS-SWD; CNS-GS; FNS-SWD; and FNS-GS. Sleepiness was assessed with three methods: 1) during a clinical interview with a dichotomous question (yes/no); 2) Stanford sleepiness scale (SSS) on 7 points in time (Pre and post day sleep and night sleep as well as before, during, and after night work); 3) Epworth sleepiness scale. SWD sufferers presented a significant higher total score on the SSS than GS (p= .01). Point-in-time on the SSS revealed specificity for each work schedule: CNS-SWD reported significantly greater sleepiness when they woke up after day sleep (p = .03) while FNS-SWD, compared to FNS-GS, did so during night work (p = .03). There was no significant difference between workers with SWD and GS on the Epworth or the proportion of “yes”. Excessive sleepiness is higher for shift workers with SWD. However, the moment sleepiness is excessive varies according to the work schedule. Indeed, high sleepiness after day sleep appears specific to CNS-SWD. When the work schedule is fragmented, the sleepiness seems more problematic during night work. Results highlight that neither a dichotomous question nor scores on the Epworth sleepiness scale allow the proper identification of excessive sleepiness for shift workers. A thorough evaluation of sleepiness in shift workers is warranted while paying attention to work schedule and the presence or not of SWD. The study was supported by a CIHR funding 191771 awarded to the first author.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 0.002 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; both teacher heads agree on what is shown here.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".