Table 3

PSQI component subscores in patients with myotonic dystrophy types 1 (DM1) and 2 (DM2) and in population controls

PSQI componentDM2DM1Controlsp Valuep Valuep Value
(ANOVA)(DM2–DM1)(DM2–controls)
Subjective sleep quality1.1±0.90.9±0.70.7±0.60.0240.2700.008
Sleep latency1.5±1.11.0±1.10.8±0.70.0100.1470.001
Sleep duration0.3±0.70.5±0.70.4±0.70.8310.5780.597
Sleep efficiency0.8±1.21.0±1.20.4±0.80.0160.4490.075
Sleep disturbances1.4±0.81.0±0.71.1±0.50.0170.0390.008
Use of sleeping medication0.1±0.40.6±1.10.3±0.80.1040.0500.383
Daytime dysfunction1.2±0.81.2±0.90.7±0.70.0010.8770.002
  • Data are shown as mean±SD.

  • PSQI, Pittsburgh Sleep Quality Index.