Table 2.

Demographic, clinical, and polysomnographic characteristics for the population studied

VariablesPatients, n = 92
All clinical and polysomnographic (PSG) measures were carried out before initiation of pharmacologic treatment.
* Periodic limb movement during sleep (PLMS) per hour of sleep.
RLS = restless legs syndrome.
Age, y, mean ± SD56.47 ± 11.69
Sex, F/M52/40
Clinical characteristics
    Age at onset, y, mean ± SD28.35 ± 14.31
    Duration of RLS, y, mean ± SD26.22 ± 13.57
    Positive family history, n (%)44 (48)
PSG measures
    PLMS index,* mean ± SD36.8 ± 31.52