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. 2009 Jan 1;32(1):46–52.

Table 1.

Subject Characteristics

N (%) Mean ± SD Range
Number of subjects 180 - -
Males (%) 137 (76.1%) - -
Age (years) 53.4 ± 14.3 20–86
Ethnicity – Caucasians 172 (95.6%) - -
Anthropometry
    BMI (kg/m2) - 29.3 ± 5.13 19.5–50.9
    Neck circumference (cm) - 41.3 ± 4.48 30.5–55.0
    Waist circumference (cm) - 105 ± 14.4 70.0–148
Symptoms
    Epworth Sleepiness Scale (ESS) - 8.82 ± 4.99 0–23
    Witnessed apneas 86 (47.8%) - -
Polysomnography
    Total AHI - 22.7 ± 21.7 0–110
    Minimum SaO2 (%) - 83.5 ± 10.1 36–99