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. Author manuscript; available in PMC: 2019 Mar 13.
Published in final edited form as: J Adolesc Health. 2017 Dec 2;62(2):184–190. doi: 10.1016/j.jadohealth.2017.09.010

Table 1.

Demographic characteristics and self-report measures of pubertal development, physical and sedentary activity, sleep quality and depressive symptoms.

Females
Mean (SD) 		±95%CI Males
Mean (SD) 		±95%CI
Sample, No. 67 - 82 -
Age, y 15.7 (2.4) 15.2–16.3 15.4 (2.1) 14.9–15.9
Pubertal development, PDS scores a 3.4 (0.7) 3.2–3.5 2.8 (0.7) 2.7–2.9
Girls post-menarche, % 82.0 - - -
Ethnicity
 ▪ Caucasian, % 68.7 - 72.0 -
 ▪ Asian, % 16.4 - 20.7 -
 ▪ African-American, % 14.9 - 7.3 -
Exceeds baseline drinking criteria, % b 22.4 - 13.4 -
Current smokers (>1 cigarette per week), % 0 - 0 -
Body mass index
▪  Absolute, Kg.m−2
▪  Percentile
  - Obese (≥95th percentile), %
  - Overweight (85th to <95th percentile), %
  - Healthy Weight (5th to <85th percentile), %
  - Underweight (<5th percentile), %
21.9 (5.2)
56.3 (28.9)
10.4
10.4
73.1
6.0
20.7–23.2
49.2–63.3
-
-
-
-
21.8 (4.5)
59.6 (26.7)
9.8
14.6
73.2
2.4
20.8–22.8
53.8–65.5
-
-
-
-
Daily Activity c
 ▪ N days in past 7 days of at least 60 min of physical activity 3.3 (1.9) 2.9–3.8 4.1 (1.9) 3.6–4.5
 ▪ N hours of sedentary screen-time activity (e.g., watching TV, computer games) on an average school day 3.0 (1.5) 2.7–3.4 3.0 (1.3) 2.6–3.3
Sleep quality, PSQI total score d 4.3 (2.4) 3.7–4.9 3.7 (2.2) 3.3–4.2
 ▪ Exceeded cut-off for poor sleep quality (PSQI ≥5), % 34.8 - 28.4 -
Depressive symptoms, CESD total score e 7.0 (6.6) 5.3–8.7 5.7 (3.8) 4.8–6.6
 ▪ Exceeded subthreshold depressive symptoms (CESD ≥16), % 13.3 - 1.4 -
a

Pubertal Development Scale (PDS), missing in one female and four males;

b

defined in Brown and colleagues [32]. Exceeds group reported median [25th, 75th percentile] of 5.5 [2.75, 17.75] days in the past year on which they consumed alcohol and a median of 1 [1.0, 3.0] binge drinking episodes (>4 drinks for girls, >5 drinks for boys) in the past year. Compared with no/low users (medians of 0 for both these measures);

c

determined by the National Youth physical activity and nutrition survey (NYPANS),missing in three females and 10 males;

d

Pittsburgh Sleep Quality Index (PSQI), missing in one female and one male;

e

Center for Epidemiologic Studies Depression Scale (CESD), missing in seven females and 8 males.