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. Author manuscript; available in PMC: 2020 Jul 1.
Published in final edited form as: Behav Sleep Med. 2017 Dec 22;17(4):470–480. doi: 10.1080/15402002.2017.1403325

Table 2.

Overall and by gender distribution of sample sleep behaviors (Dependent variables) and nonmedical use of prescription drugs (NMUPD; independent variables).

Variable Male
n = 46,062 (34.7%)
Female
n = 86,593 (65.3%)
Overall
N = 133,211 (100%)
Sleep variables (in the past 7 days), number of days (%)
Enough Sleep
01 DayPoor 8,865 (19.4) 20,280 (23.4) 29,145 (22.1)
25 DaysMiddle 30,633 (67.0) 57,254 (66.1) 87,887 (66.6)
67 DaysOptimal 6,239 (13.6) 8,626 (10.0) 14,865 (11.3)
Early Awakening
01 DayOptimal 34,842 (76.3) 61,197 (71.1) 96,039 (72.9)
25 DaysMiddle 9,698 (21.2) 22,304 (25.9) 32,002 (24.3)
67 DaysPoor 1,113 (2.5) 2,523 (3.0) 3,636 (2.8)
Daytime Sleepiness
01 DayOptimal 12,398 (27.1) 15,926 (18.5) 28,324 (21.5)
25 DaysMiddle 27,496 (60.1) 5,4691 (63.5) 82,187 (62.3)
67 DaysPoor 5,834 (12.8) 15,527 (18.0) 21,361 (16.2)
Difficulty Falling Asleep
01 DayOptimal 30,547 (66.8) 53,981 (62.7) 84,528 (64.1)
25 DaysMiddle 12,140 (26.6) 25,447 (29.6) 37,587 (28.5)
67 DaysPoor 3,021 (6.6) 6,697 (7.7) 9,718 (7.4)
Problem With Daytime Sleepiness
No ProblemOptimal 6,198 (13.5) 7,168 (8.3) 13,366 (10.1)
Little to Very big problemPoor 39,573 (86.5) 78,990 (91.7) 118,563 (89.9)
Prescription drugs (past 12 months)
Antidepressant use 1,264 (2.8) 2,742 (3.2) 4,006 (3.0)
Painkiller use 3,915 (8.6) 5,911 (6.9) 9,826 (7.5)
Sedative use 3,781 (4.4) 5,881 (3.9) 9,661 (7.4)
Stimulant use 1,998 (8.3) 3,340 (6.9) 5,338 (4.1)
Any NMUPD 6,786 (15.0) 11,651 (13.6) 18,437 (14.1)