Secondhand Smoke Exposure, Restless Sleep, and Sleep Duration in Adolescents
Table 1
Characteristics of adolescents in a study on secondhand smoke (SHS) exposure and sleep (,592).
Frequency of restless sleepa
Totalb
Rarely or none of the time (<1 day)
Some or a little of the time (1-2 days)
Occasionally or a moderate amount of the time (3-4 days)
Most or all of the time (5–7 days)
Demographics
Gender, (%)
Male
331 (45.5)
150 (37.3)
62 (32.5)
35 (26.9)
653 (41)
Female
396 (54.4)
252 (62.7)
129 (67.5)
95 (73.1)
931 (59)
Age, mean (SD)
Years
14.8 (0.7)
14.8 (0.6)
14.9 (0.7)
14.9 (0.7)
14.8 (0.7)
Ethnicity, (%)
Caucasian
386 (55.7)
257 (66.6)
118 (64.5)
79 (64.2)
868 (60)
Aboriginal
22 (3.2)
12 (3.1)
9 (4.9)
6 (4.9)
55 (4)
Asian
250 (36.1)
96 (24.9)
50 (27.3)
33 (26.8)
456 (31)
Other
35 (5.1)
21 (5.4)
6 (3.3)
5 (4.1)
75 (5)
Family income, (%)
Below average
121 (17.9)
83 (22.3)
54 (29.5)
35 (29.4)
305 (22)
Average
236 (35.0)
132 (35.4)
62 (33.9)
39 (32.8)
492 (35)
Above average
318 (47.1)
158 (42.4)
67 (36.6)
45 (37.8)
615 (44)
Weekday nighttime sleep, mean (SD)
Hours
8.7 (1.0)
8.7 (0.9)
8.5 (1.1)
8.2 (1.1)
8.6 (1.0)
Weekend nighttime sleep, mean (SD)
Hours
9.8 (1.0)
9.9 (1.0)
9.6 (1.1)
9.7 (1.1)
9.8 (1.0)
Adolescents’ tobacco use
Smoked in the past 30 days, (%)
Yes
28 (3.9)
13 (3.2)
15 (7.7)
10 (7.7)
76 (5)
SHS exposure
Overall SHS exposure in the past month, (%)
Never
133 (18.5)
44 (11.1)
17 (8.8)
12 (9.4)
236 (15)
At least once in the past month
321 (44.6)
184 (46.2)
72 (37.3)
52 (40.6)
661 (43)
At least once a week
187 (26.0)
118 (29.6)
64 (33.2)
34 (26.6)
423 (28)
Every day or almost every day
78 (10.8)
52 (13.1)
40 (20.7)
30 (23.4)
215 (14)
These columns display data from participants who answered both the restless sleep and the specific demographic, tobacco use, and/or SHS exposure questions.
bThis column displays data from participants who answered the specific demographic, tobacco use, and/or SHS exposure questions regardless of whether they answered the restless sleep question.
