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. Author manuscript; available in PMC: 2018 May 24.
Published in final edited form as: J Psychosom Res. 2017 Feb 21;96:15–20. doi: 10.1016/j.jpsychores.2017.02.011

Table 1.

Descriptive Statistics

Variable M or % SD Range Internal Consistency (α)
Female 42%
Non-White 78.50%
Some college (less than 1 year)* 40.10% No schooling-Doctoral Degree
Age 12.82 1.85 10 - 18
Secrecy 1.41 0.60 1.00 - 4.33 0.94
Asthma Symptoms (day) 1.34 0.38 1.00 - 3.00 0.89
Asthma Symptoms (night) 1.26 0.38 1.00 - 3.27 0.90
Subjective Sleep Quality 3.38 0.47 2.25 - 4.00
Number of Awakenings 0.77 1.00 0.00 - 7.50
SOL 20.40 26.00 0.00 - 178.33
Total time in Bed 9.01 1.29 4.65 - 12.54
Negative Affect 1.24 0.30 1.00 – 3.04 0.85
Sleep Continuity 8.67 1.34 2.88 - 12.35

Note.

*

Indicates parental education; SOL=Sleep Onset Latency (reported in minutes); Sleep Continuity (reported in hours) was calculated as the difference between Total time in Bed (reported in hours) and SOL.