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

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