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Fit plot for the difference between TSTobj and TSTbed/wake as a function of (A) sleep efficiency, (B) global PSQI score, and (C) BMI. BMI = body mass index, PSQI = Pittsburgh Sleep Quality Index, TSTbed/wake = calculated total sleep time from PSQI bedtime, wake time, and time to fall asleep, TSTobj = total sleep time by actigraphy.
