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. 2009 Aug 1;32(8):1027–1037. doi: 10.1093/sleep/32.8.1027

Table 1.

Demographic Characteristics of Good Sleepers and Insomnia Symptoms and Syndrome Incident Cases

Demographics Good Sleepers (n = 275) Incident Cases
Insomnia Symptoms (n = 130) Insomnia Syndrome (n = 32)
% (n) % (n) % (n) χ2 P Pa,b rs
Gender (women) 55.11 (151) 60.46 (78) 75.00 (24) 5.06 0.08 0.03
Marital Status
    Single/divorced/widowed 35.66 (97) 42.64 (55) 40.63 (13) 1.90 0.39 0.24
    Married /common-law relationship 64.34 (15) 57.36 (74) 59.38 (19)
Family Income
    $60,000 and less 69.11 (179) 68.59 (83) 64.52 (20) 0.27 0.87 0.67
    $60,001 and over 30.88 (80) 31.40 (38) 35.48 (11)
Occupation
    Working/student 79.93 (215) 79.84 (99) 74.19 (23) 0.57 0.75 0.59
    Non working/retired 20.07 (47) 20.16 (25) 25.80 (8)
Work Schedule
    Daytime 87.03 (161) 83.91 (73) 81.82 (8) 2.46 0.87
    Evening/Night/Rotating 12.97 (24) 16.09 (14) 18.18 (4)
Education
    Primary or less 3.33 (9) 5.47 (7) 10.00 (3) 12.80 0.05 0.06
    High school 49.63 (134) 39.06 (50) 50.00 (15)
    Junior college 23.06 (62) 18.75 (24) 10.00 (3)
    University 24.07 (65) 36.72 (47) 30.00 (9)
M (SD) M (SD) M (SD) F P R
Age 42.36 (13.76) 43.91 (14.3) 44.52 (12.4) 0.76 0.47 0.06
a

P values for chi-squares for trend.

b

Given that work schedule included more than 2 categories, χ2 for trend was not computed. rs = Spearman correlation. R = Pearson correlation