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Table 2 Description of the population at baseline (N = 396)

From: Evaluation of the reliability and validity of the Medical Outcomes Study sleep scale in patients with painful diabetic peripheral neuropathy during an international clinical trial

Population characteristics
Socio-demographic characteristics
   Age (years; mean ± STD)   59 ± 11
   Gender Female 45%
  Male 55%
   Race White 96%
  Black 1%
  Asian or Pacific 2%
  Other 2%
   Country Australia 19%
  Germany 17%
  Hungary 9%
  Poland 42%
  South Africa 8%
  United Kingdom 5%
Clinical parameters Mean score ± STD
   Mean sleep interference score 5.6 ± 2.2
   Mean pain score 6.4 ± 1.4
MOS-Sleep dimension scores  
   Awaken Short of Breath 24.3 ± 27.2
   Sleep disturbance 54.9 ± 26.3
   Quantity of sleep 6.0 ± 1.6
   Snoring 40.2 ± 33.3
   Somnolence 42.0 ± 24.2
   Sleep Problems Index 48.8 ± 19.6
   Sleep adequacy 43.5 ± 28.7
   Optimal sleep (yes; %) 34
  1. STD: Standard Deviation