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. Author manuscript; available in PMC: 2015 May 1.
Published in final edited form as: JAMA Pediatr. 2014 May;168(5):427–434. doi: 10.1001/jamapediatrics.2013.3921

Table 2.

Baseline Characteristics of Participants Stratified by Presence of a Bedroom Televisiona

Bedroom Television
Baseline Characteristic Absent Present P Valueb
Media, mean (SE)
 Television viewing time, h/d 2.9 (0.0) 3.2 (0.0) <.001
 Movies viewed, No./wk 2.8 (0.0) 3.0 (0.0) <.001
 Video-game playing, h/d 2.0 (0.0) 2.2 (0.0) <.001
Parenting style score, mean (SE)
 Parental demandingness (scale, 0–28) 23.5 (0.1) 23.3 (0.1) .02
 Parental responsiveness (scale, 0–36) 29.6 (0.1) 29.2 (0.1) .003
Sociodemographic data
 Age, mean (SE), y 11.9 (0.0) 12.1 (0.0) <.001
 Sex
  Male 36.9 63.1 <.001
  Female 45.1 54.9
 Race/ethnicity
  White 46.2 53.8 <.001
  Black 25.1 74.9
  Hispanic 34.1 65.9
  Other 44.1 55.9
 Household income, $
  ≤10 000 26.1 73.9 <.001
  10 001–20 000 32.3 67.7
  20 001–30 000 35.3 64.7
  30 001–50 000 34.5 65.5
  50 001–75 000 43.4 56.6
  ≥75 001 51.2 48.8
 Parental educational level
  Less than high school 31.3 68.7 <.001
  High school degree 30.5 69.5
  Some beyond high school 35.4 64.6
  Associate’s degree 41.8 58.2
  Bachelor’s degree 55.5 44.5
  Some graduate school 61.0 39.0
a

Data are part of the Dartmouth Media Study of participants aged 10 to 14 years. We used 6522 participants to create weighted estimates. Unless otherwise indicated, data are expressed as percentage of participants.

b

Calculated from an unpaired, 2-tailed t test with an equal variance assumption to analyze the difference in means and a χ2 test to analyze the difference in proportions of participants with and without bedroom televisions by the different baseline characteristics.