Table 1:

Diary, actigraphy (ACT), and polysomnography (PSG) characteristics.

Diary, ACT, and PSG (Means and standard deviations (SDs) over 7 nights for Diary and ACT; Means over 2 nights for PSG)

Wake up time (Wake)

Bed time (Bed)

Minutes between bed and wake (Sleep Duration)

Minutes between bed and sleep onset (Sleep Latency, SL)

Minutes awake after first sleep onset (Wake After Sleep Onset, WASO)

Minutes between bed and wake minus WASO and SL (Total Sleep Time, TST)

% minutes asleep after bed time (Sleep Efficiency, SE)

Diary Only (Means and SDs over 7 nights)

Number of awakenings

Sleep quality (Quality)

Mood upon awakening (Mood)

Alertness upon awakening (Alertness)

ACT Only (Means and SDs over 7 nights)

Restlessness based on mobile and immobile periods

Sum of all activity

Average activity per minute

Standard deviation of activity

Maximum activity

PSG Only (Means over 2 nights)

Minutes awake during the 1st half of the night

Minutes awake during the 2nd half of the night

Minutes awake during the last two hours of the night

Minutes of stage N1 sleep (N1)

Minutes of stage N2 sleep (N2)

Minutes of delta (stage N3) sleep (Delta)

Minutes of non-rapid eye movement (i.e., stages N1, N2, and N3) sleep (NREM)

Minutes of rapid-eye movement sleep (REM)

% minutes asleep after sleep onset

% minutes of stage N1 sleep (% N1)

% minutes of stage N2 sleep (% N2)

% minutes of delta (stage N3) sleep (% Delta)

% minutes of NREM sleep (% NREM)

Minutes from sleep onset to REM sleep (REM Latency, RL)

RL minus minutes awake between sleep onset and onset of REM sleep

Stage N3 in 1st NREM period / Stage N3 in 2nd NREM period