Table 3 Results from Multilevel Models of Daytime Sedentary Minutes Predicting Night Sleep Variables.

From: Bidirectional, Daily Temporal Associations between Sleep and Physical Activity in Adolescents

  Sleep onset (midnight-centered time) Sleep offset (24-hour time) Sleep duration (minutes) Sleep maintenance efficiency (percentage)
B (SE) B (SE) B (SE) B (SE)
Intercept −4.02 (1.89)* 0.74 (1.93) 381.27 (75.27)*** 97.63 (3.81)***
Sex, Male (ref Female) 0.63 (0.14)*** 0.30 (0.14)* −22.26 (5.45)*** −0.57 (0.28)*
Age 0.21 (0.12) 0.42 (0.12)*** 6.30 (4.83) −0.38 (0.25)
Race, White, non-Hispanic (ref)
Black, non-Hispanic −0.10 (0.21) −0.42 (0.22) −11.54 (8.48) −0.16 (0.43)
Hispanic −0.05 (0.23) 0.14 (0.23) 21.39 (9.10)* −0.10 (0.46)
Other −0.38 (0.25) −0.43 (0.26) 2.63 (9.91) −0.13 (0.51)
Mother’s Education, Less than High School (ref)
High School or Equivalent 0.17 (0.23) 0.11 (0.23) −6.06 (9.00) 0.09 (0.46)
Some College/Technical School 0.30 (0.20) 0.18 (0.21) −11.44 (8.12) 0.08 (0.41)
College or Graduate School 0.02 (0.28) 0.08 (0.29) 5.35 (11.15) 0.74 (0.57)
Family Structure, Biomother + Biofather (ref)
Other Living Arrangements −0.42 (0.25) −0.21 (0.26) 13.39 (10.00) −0.37 (0.51)
Biomother + New Partner −0.30 (0.19) −0.08 (0.20) 11.04 (7.64) −0.82 (0.39)*
Biomother Only −0.17 (0.18) 0.08 (0.19) 7.87 (7.25) −0.57 (0.37)
Income to Poverty Threshold, >=300% (ref)
<49% 0.64 (0.26)* 0.61 (0.26)* 0.76 (10.33) −1.15 (0.53)*
50–99% 0.23 (0.23) 0.04 (0.24) −9.60 (9.27) 0.36 (0.47)
100–199% 0.26 (0.20) 0.25 (0.20) −4.21 (7.95) −0.47 (0.41)
200–299% −0.05 (0.23) 0.05 (0.23) −2.83 (8.95) 0.03 (0.46)
BMI 0.002 (0.003) −0.003 (0.003) −0.26 (0.11)* −0.001 (0.01)
Weekend (ref Weekday) 0.93 (0.07)*** 1.86 (0.08)*** 54.48 (4.78)*** 0.07 (0.13)
Daytime Sedentary Minutes (between-person) 0.003 (0.001)*** 0.001 (0.001) −0.15 (0.03)*** 0.01 (0.002)***
Daytime Sedentary Minutes (within-person) 0.005 (0.0004)*** 0.003 (0.0004)*** −0.19 (0.03)*** 0.002 (0.001)***
  1. Note. 2,249 daily observations were clustered within 417 adolescents. Results express the between- and within- relationship of daytime sedentary minutes and night sleep variables while adjusting for covariates. Biomother, Biofather = Biological Mother and Biological Father. BMI is body mass index.
  2. *p < 0.05, **p < 0.01, ***p < 0.001.