Table 3

PDSS-2 domain scores and sub-items in PD patients with and without pRBD
PDSS-2 Item pRBD (RBDSQ-J ≥ 5) Non-pRBD (RBDSQ-J < 5) p value
Disturbed sleep 8.3 ± 3.0 6.7 ± 3.3 0.066
  Poor sleep quality 1 1.3 ± 1.4 1.0 ± 1.3 0.35
  Difficulty falling asleep 2 1.7 ± 1.5 0.8 ± 1.0 0.013
  Difficulty staying asleep 3 2.1 ± 1.3 1.8 ± 1.3 0.35
  Tired/sleepy in the morning 14 0.9 ± 1.1 0.7 ± 0.9 0.62
  Get up to pass urine 8 2.3 ± 1.2 2.4 ± 1.4 0.69
Motor symptoms at night 4.7 ± 3.6 2.8 ± 3.3 0.036
  Restlessness of arms or legs 4 1.2 ± 1.1 0.8 ± 1.1 0.083
  Urge to move arms or legs 5 0.8 ± 1.0 0.4 ± 0.8 0.084
  Distressing dreams 6 1.3 ± 1.1 0.4 ± 0.8 <0.001
  Painful posturing in morning 12 0.3 ± 0.7 0.4 ± 1.0 0.86
  Tremor on waking 13 0.9 ± 1.4 0.7 ± 1.1 0.84
PD symptoms at night 3.1 ± 2.9 2.5 ± 3.0 0.31
  Distressing hallucinations 7 0.6 ± 0.9 0.2 ± 0.7 0.0074
  Uncomfortable and immobile 9 0.8 ± 1.0 0.7 ± 0.9 0.58
  Pain in arms or legs 10 0.6 ± 0.8 0.7 ± 1.0 0.88
  Muscle cramps in arms or legs 11 0.7 ± 0.8 0.6 ± 1.0 0.47
  Breathing problems/snoring 15 0.4 ± 0.5 0.3 ± 0.5 0.60

PD, Parkinson’s disease; pRBD; probable REM sleep behavior disorder; PDSS-2, Parkinson’s Disease Sleep Scale-2. The data are presented as the n (%) or the means ± SD. Statistically significant values (P < 0.05) are shown in bold. Patients with RLS and snorers were excluded.

Suzuki et al.

Suzuki et al. BMC Neurology 2013 13:18   doi:10.1186/1471-2377-13-18

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