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Table 1 Patient characteristics and sleep variables of subject patients with PLMD

From: Change in heart rate variability precedes the occurrence of periodic leg movements during sleep: an observational study

Gender (M:F) 9:5
Age (yr) 45.9 ± 11.5
Epworth Sleepiness Scale (points) 12.8 ± 4.1
Apnea–hypopnea index (n/hr) 1.7 ± 0.1
Wake after sleep onset (%SPT) 6.1 ± 4.4
Stage 1 (%SPT) 11.7 ± 5.0
Stage 2 (%SPT) 56.9 ± 7.5
Stage 3 + 4 (%SPT) 4.4 ± 5.5
Stage REM (%SPT) 21.0 ± 4.1
Arousal index (n/hr) 13.9 ± 5.3
PLMS index (n/hr) 34.1 ± 14.8
PLMS related arousal index (n/hr) 4.0 ± 2.3
Sleep latency (min) 7.2 ± 8.0
Sleep efficiency (%) 91.7 ± 3.7
  1. Values are expressed as mean ± SD, except for gender distribution.
  2. PLMD, periodic leg movement disorder; SPT, sleep period time; REM, rapid eye movement; PLMS, periodic leg movement during sleep.
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