Table 1

 Clinical characteristics of nine patients with idiopathic restless legs syndrome

VariableMean (SEM) or nRange
ESS, Epworth sleepiness scale (daytime sleepiness); IRLSSG, International RLS Study Group rating scale; PLMS/h TST, periodic leg movement index per hour total sleep time; PSQI, Pittsburgh sleep quality index; RLS, restless legs syndrome; TST/TIB: total sleep time/time in bed (sleep efficiency).
M/F5/4
Age (years)55.3 (3.1)(41 to 71)
PSQI11.9 (1.5)(4 to 19)
ESS6.2 (1.2)(0 to 12)
Duration of RLS (years)16.3 (3.9)(3 to 40)
IRSSG rating scale27.1 (2.2)(15 to 37)
PLMS/h TST32.1 (8.2)(10.1 to 91.9)
Sleep efficiency (TST/TIB) (%)72.4 (5.0)(40.1 to 85.7)