Bright Light on Fatigue in Women Being Treated for Breast Cancer

-Consists of 30 items with a 4-point rating scale (1=not at all to 4=very much) measuring functioning, symptom intensity, and global health status/quality of life

-Consists of 8 common daily activities with a 4-point rating scale (0=would never doze to 3=a high chance of dozing) measuring usual daytime sleepiness over a recent time period

-Contains 19 self-report items measuring sleep quality, latency, duration, efficiency, disturbance, medication use, and daytime dysfunction. Each item is rated on a 0-3 rating scale. The global PSQI score ranges 0-21, with higher scores indicating more severe sleep disturbance

-Consists of 8 items with 5-point rating scales measuring overall sleep and sleep-related impairments. Higher scores indicate worse sleep disturbances

-Consists of 8 items with a 5-point rating scale (1=not at all to 5 =very much) measuring fatigue experience and fatigue impact. Higher scores indicate worse fatigue.

-The light-weight light sensor is approximately 2 inches in diameter and comes with a clip and strap that makes it comfortable to wear just below the neck.

-A standard sleep montage of electroencephalography following the 10/20 procedure for electrode placement, left and right electrooculography referenced to the opposite mastoid and mentalis electromyography will be followed

"* Two visual analog scales (VAS) for diurnal fatigue and daytime sleepiness~* Two 0-10 point rating scales (average and worst fatigue levels in 24 hours)"