Skip to main content
. Author manuscript; available in PMC: 2018 Jul 1.
Published in final edited form as: Scand J Pain. 2017 Apr 19;16:66–73. doi: 10.1016/j.sjpain.2017.03.005

Table 1.

Sample Demographic and Sleep Characteristics

Males
(n = 59)
Females
(n = 120)
Total
(n = 179)
Age (Mean years + SD) 62.78+10.11 59.88+9.58 60.83+9.82
Insomnia Diagnosis (%) 71.2* 84.2 79.9
ISI Score (Mean + SD) 13.27+8.39 14.87+6.94 14.34+7.47
AHI (Mean + SD) 11.49+11.89** 7.51+7.86 8.82+9.53
K-L scale (Mean + SD) 2.32+1.22 2.46+1.25 2.00+1.14
Race
 % African American 25.4 44.2 38.0
 % White 67.8 54.2 58.7
 % Asian   5.1   1.7 2.8
 % More than one race   1.7   0.0 0.6
Marital status
 % Married 50.8 39.5 43.3
Education
 % College graduate 59.0 47.0 51.7
Employment
 % Employed 37.3 42.9 41.1
Household Income
 % > $50,000 49.1 42.4 44.6

p < .10;

*

p < .05;

**

p < .01; SD = standard deviation