date:Dec 24, 2012
with 25OHD levels less than 20 ng/mL were determined to have vitamin D deficiency. Sleepiness was determined using the Epworth Sleepiness Scale score.
In patients with vitamin D deficiency, the lower the vitamin D levels, the more daytime sleepiness they experienced. In black patients, mean excessive daytime sleepiness scores in patients with vitamin D deficiency were higher and 25OHD levels were lower.
Patients with normal vitamin D levels also benefited from higher levels. In these patients