Skip to main content
. Author manuscript; available in PMC: 2015 Feb 1.
Published in final edited form as: J Sleep Res. 2013 Aug 29;23(1):84–93. doi: 10.1111/jsr.12083

Table 1. Sample Characteristics (n=100).

Variable MEAN (SD) or % Range
Flow Mediated Dilation % 13.50% (5.89%) 2.70 – 28.6
Sex (% male:% female) 57%: 43%
Age (yrs) 35.66 (9.54) 19 – 53
Race (% Caucasian:% African American) 63%: 37%
BMI (kg/m2) 26.24 (4.11) 18.92–42.44
 [Obesity: BMI≥30 kg/m2] [19%]
Hypertension (% normotensive:% hypertensive) 88%: 12%
  [Systolic Blood Pressure (mmHg)] [120.75 (14.09)] [91.33-153.67]
  [Diastolic Blood Pressure (mmHg)] [71.70 (9.94)] [53.67-102.67]
Smoking (% nonsmokers:% smokers) 92%:8%
Annual Income $31,519 ($19,067) $300–$100,000
Perceived Stress Scale 13.42 (6.11) 0-28
Pittsburgh Sleep Quality Inventory Global Score 4.88 (2.89) 0-16
Total Sleep Time (minutes) 395.77 (49.46) 241.3 - 557.4
Wake After Sleep Onset (minutes) 23.31 (20.87) 2.5 – 117.0
REM Sleep % 22.73 (5.79) 8.58–39.19
REM Sleep Latency from Sleep Onset (minutes) 87.50 (48.50) 3.5–271.0
Slow Wave Sleep (minutes) 80.27 (39.91) 0 –182.0
Sleep Efficiency % 91.89 (6.20) 70.04–99.12
Total Arousal Index (events/hour) 8.09 (5.43) 0 –33.70
Apnea-hypopnea Index (events/hour) 8.09 (8.35) 0.17 – 38.64
  [No OSA: AHA 0-4.9] [48%]
  [Undiagnosed Mild OSA: AHI 5.0-14.9] [36%]
  [Undiagnosed Moderate OSA: AHI 15.0-29.9] [12%]
  [Undiagnosed Moderate OSA: AHI 15.0-29.9] [4%]