Distinct Sleep Disturbance Profiles in Patients With Gastrointestinal Cancers Receiving Chemotherapy.
Yufen Lin, Donald E Bailey, Sharron L Docherty and 7 others
PMID 34183521WHAT IT FOUND
Most patients with gastrointestinal cancers on chemotherapy had high sleep disturbance, driven mainly by insufficient sleep quantity and frequent awakenings.
Those in the worst group were younger, unemployed, had childcare duties, and reported more pain and fatigue.
Key findings
01Sleep disturbance profiles fell into Low (35.8%), High (48.6%), and Very High (15.6%) classes, with the latter two exceeding the clinical cutoff for significant disturbance.
02Across all groups, insufficient sleep quantity and frequent mid-sleep awakenings were the only sleep problems severe enough to warrant clinical attention, indicating a maintenance rather than initiation issue for most.
03Membership in the Very High sleep disturbance class was associated with younger age, unemployment, childcare responsibilities, lack of exercise, lower functional status, and higher comorbidity burden.
STILL TO COME
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What it does not show
Sleep disturbance was measured by self-report, not objective methods like actigraphy or polysomnography. Patients were recruited after starting chemotherapy, so risk factors for sleep disturbance prior to treatment initiation were not evaluated. The sample was predominantly White and well-educated, limiting generalizability to more diverse populations. The study combined various gastrointestinal cancer types, so findings may not apply to specific cancers like pancreatic or gastric cancer.
Declared interests
No conflicts of interest or funding sources were explicitly stated in the provided text.
The easy way to misread this
Do not assume that the association between sleep disturbance and symptoms like pain and fatigue proves that treating sleep will reduce these symptoms. This is an observational study showing that patients with worse sleep also report worse symptoms, not that sleep disturbance causes them or that interventions will improve outcomes.