Poor sleep quality is associated with nocturnal glycaemic variability and fear of hypoglycaemia in adults with type 1 diabetes.
Pamela Martyn-Nemeth, Shane A Phillips, Dan Mihailescu and 5 others
PMID 29917259WHAT IT FOUND
Adults with type 1 diabetes who had poor sleep quality had greater overnight blood glucose swings and more fear of low blood glucose.
Average HbA1c did not differ.
Key findings
01Those with poor sleep quality had greater nocturnal glucose variability (39.3 vs 29.5) and higher fear-of-hypoglycaemia scores (29.1 vs 21.7) than those with good sleep quality.
02In adjusted analysis, greater nocturnal glucose variability (OR 1.38) and greater fear of hypoglycaemia (OR 1.51) were associated with poor sleep quality.
03HbA1c did not differ between poor-sleep and good-sleep groups.
STILL TO COME
How it was doneWhat they foundWhat it means for RNs
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What it does not show
Sleep quality was measured by questionnaire, not by objective sleep monitoring. The analysis was secondary and not fully powered for the current aims. The sample was small and cross-sectional, so it cannot show cause. Sleep apnea could not be ruled out.
Declared interests
The authors declared no conflicts of interest.
The easy way to misread this
Do not conclude that reducing overnight glucose swings will improve sleep. This was a cross-sectional secondary analysis, so it cannot show cause.