Table 2.

Baseline objective polysomnographic (PSG) data. All results reported as mean (SD). Non-missing data reported.

Polysomnographic DataAll Randomized PatientsPatients Who Completed the Study
No. patients195151
Objective sleep/wake outcome measures(n = 181)(n = 138)
  Total sleep time, min362.9 (74.9)367.2 (72.6)
  Sleep onset latency, min26.0 (27.0)24.7 (26.8)
  Wake after sleep onset, min73.8 (55.2)75.5 (53.4)
  No. awakenings25.5 (11.6)25.8 (11.6)
  Sleep efficiency, %76.5 (15.5)77.2 (15.0)
Duration of sleep stages assessed by PSG(n = 180)(n = 136)
  Rapid eye movement (REM), min76.1 (32.9)77.5 (33.8)
  Non-REM, min286.9 (59.7)289.6 (58.6)
  Stage 1, min41.2 (21.5)42.1 (22.7)
  Stage 2, min203.1 (55.9)206.4 (56.0)
  Slow-wave sleep, min42.5 (34.7)41.1 (30.4)
Rate of cyclic alternating pattern (CAP)(n = 88)(n = 47)
  Total CAP rate62.7 (21.7)65.3 (17.5)
  Phase A1 CAP rate, %48.4 (20.0)52.4 (16.7)
  Phase A2/A3 CAP rate, %14.3 (7.7)12.9 (5.3)