Test-Retest Reliability of Oxford Medilog 9000 Sleep Recording and SS-90-III Sleep Stage Scoring

摘要

Sleep was recorded in 19 normal sleepers (19.3-63.5 years of age) one night at home, using the Medilog 9000 system to assess the reliability of the Medilog SS-90-III Sleep Stager by comparing sleep scoring of the same records scored five times. Primary results were: (1) Sleep Stager scoring of most sleep measures was highly reliable, with alpha coefficients ranging from .98 to 1.00 for total sleep time, movement time, sleep onset, waking after sleep onset, and both absolute and percentage amounts of sleep stages 1-4 and REM; (2) scoring of latency measures was less reliable, although certainly acceptable for REM latency and marginally acceptable for stage 2 and 3 latencies, but not acceptable for an automated scoring of stage 4 latency. Keywords: Medilog system; Sleep scoring; EEG sleep; Portable recordings; Normal sleepers. (sdw)