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Table 1—

Sleep parameters during the first and the second halves of the night

Type 1 diabetic patientsHealthy subjectsP value
First night-half    
    TST (min) 202.8 ± 0.8 201.7 ± 1.6 0.83 
    WASO (%) 0.7 ± 0.3 1.5 ± 0.8 0.25 
    Stage 1 (%) 11.9 ± 1.7 17.8 ± 3.3 0.59 
    Stage 2 (%) 58.6 ± 3.1 47.5 ± 4.0 0.04 
    SWS (%) 21.3 ± 3.7 24.7 ± 3.3 0.09 
    REM (%) 7.5 ± 1.5 8.6 ± 1.8 0.38 
    Movement (%) 12.3 ± 2.0 12.7 ± 2.2 0.33 
    Movement time (%) 0.7 ± 0.2 0.5 ± 0.2 0.52 
Second night-half    
    TST (min) 194.6 ± 9.1 208.4 ± 7.4 0.69 
    WASO (%) 3.1 ± 1.6 3.9 ± 2.2 0.21 
    Stage1 (%) 16.3 ± 2.4 20.3 ± 4.9 0.27 
    Stage 2 (%) 52.6 ± 3.0 46.6 ± 5.4 0.04 
    SWS (%) 8.3 ± 2.3 7.0 ± 2.0 0.66 
    REM (%) 20.0 ± 2.3 22.2 ± 2.5 0.27 
    Movement (%) 13.0 ± 1.7 17.8 ± 3.4 0.68 
    Movement time (%) 0.6 ± 0.2 0.5 ± 0.2 0.54 
Entire night    
    TST (min) 395 ± 15 404 ± 10 0.93 
    WASO (%) 1.8 ± 0.8 2.6 ± 1.1 0.52 
    Stage 1 (%) 14.2 ± 1.7 19.2 ± 3.3 0.34 
    Stage 2 (%) 55.6 ± 2.4 47.2 ± 4.1 0.01 
    SWS (%) 14.7 ± 2.6 14.9 ± 2.3 0.75 
    REM (%) 13.9 ± 1.5 15.5 ± 1.3 0.58 
    Movement (%) 12.4 ± 1.7 15.1 ± 2.3 0.23 
    Movement time (%) 0.6 ± 0.1 0.5 ± 0.1 0.50 
Type 1 diabetic patientsHealthy subjectsP value
First night-half    
    TST (min) 202.8 ± 0.8 201.7 ± 1.6 0.83 
    WASO (%) 0.7 ± 0.3 1.5 ± 0.8 0.25 
    Stage 1 (%) 11.9 ± 1.7 17.8 ± 3.3 0.59 
    Stage 2 (%) 58.6 ± 3.1 47.5 ± 4.0 0.04 
    SWS (%) 21.3 ± 3.7 24.7 ± 3.3 0.09 
    REM (%) 7.5 ± 1.5 8.6 ± 1.8 0.38 
    Movement (%) 12.3 ± 2.0 12.7 ± 2.2 0.33 
    Movement time (%) 0.7 ± 0.2 0.5 ± 0.2 0.52 
Second night-half    
    TST (min) 194.6 ± 9.1 208.4 ± 7.4 0.69 
    WASO (%) 3.1 ± 1.6 3.9 ± 2.2 0.21 
    Stage1 (%) 16.3 ± 2.4 20.3 ± 4.9 0.27 
    Stage 2 (%) 52.6 ± 3.0 46.6 ± 5.4 0.04 
    SWS (%) 8.3 ± 2.3 7.0 ± 2.0 0.66 
    REM (%) 20.0 ± 2.3 22.2 ± 2.5 0.27 
    Movement (%) 13.0 ± 1.7 17.8 ± 3.4 0.68 
    Movement time (%) 0.6 ± 0.2 0.5 ± 0.2 0.54 
Entire night    
    TST (min) 395 ± 15 404 ± 10 0.93 
    WASO (%) 1.8 ± 0.8 2.6 ± 1.1 0.52 
    Stage 1 (%) 14.2 ± 1.7 19.2 ± 3.3 0.34 
    Stage 2 (%) 55.6 ± 2.4 47.2 ± 4.1 0.01 
    SWS (%) 14.7 ± 2.6 14.9 ± 2.3 0.75 
    REM (%) 13.9 ± 1.5 15.5 ± 1.3 0.58 
    Movement (%) 12.4 ± 1.7 15.1 ± 2.3 0.23 
    Movement time (%) 0.6 ± 0.1 0.5 ± 0.1 0.50 

Data are means ± SEM. Percent values refer to TST. P values derive from unpaired Student's t test.

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