Online Program

Television viewing, TV in the bedroom, and sleep duration throughout early childhood

Monday, November 4, 2013 : 8:56 a.m. - 9:14 a.m.

Elizabeth Cespedes, SM, Departments of Nutrition and Epidemiology, Harvard School of Public Health, Boston, MA
Matthew Gillman, MD, MPH, Department of Population Medicine, Harvard Pilgrim Health Care Institute, Boston, MA
Sheryl Rifas-Shiman, MPH, Department of Population Medicine, Harvard Pilgrim Health Care Institute, Boston, MA
Susan Redline, MD, MPH, Division of Sleep Medicine, Harvard Medical School; Brigham and Women's Hospital, Boston, MA
Elsie Taveras, MD, MPH, Department of Population Medicine, Harvard Pilgrim Health Care Institute, Boston, MA
Objective: To examine associations of daily television (TV) viewing and the presence of a bedroom TV with daily sleep duration from infancy to school age. Method: We studied 1864 participants in the cohort study Project Viva. At 6 m and every year from 1 to 7 y, we obtained mother's report of her child's average TV viewing and sleep duration in a 24-hour period over the past month. Every year starting at age 4 y, we asked about the presence of a TV in the room where the child sleeps. We used linear mixed effects regression analyses to assess the associations of TV viewing and bedroom TVs with contemporaneous sleep duration adjusting for child sex, race/ethnicity, age and age2, maternal education and household income. Results: Children were 49% female and 35% non-white. From 6 m to 7 y, mean (SD) sleep duration decreased from 12.19 (2.01) h/d to 9.82 (.92) h/d; TV viewing increased from 0.89 (1.21) h/d to 1.56 (1.00) h/d. At 4 y, 17% of children had a bedroom TV, rising to 23% at 7 y. Each 1 h/d increment in TV viewing was associated with 0.03 h/d [95% CI: -0.06, -0.01] shorter sleep duration. Having a bedroom TV was associated with more TV viewing (0.32 h/d [95% CI: 0.23, 0.40]) and shorter sleep duration (0.22 h/d [95% CI: -0.32, -0.12]). Conclusion: More TV time and bedroom TV had modest but persistent associations with shorter sleep duration. Reducing TV time and avoiding bedroom TV may improve children's sleep.

Learning Areas:

Public health or related research
Social and behavioral sciences

Learning Objectives:
Describe the relationship of children’s TV behavior to sleep duration throughout early childhood.

Keyword(s): Child Health, Obesity

Presenting author's disclosure statement:

Qualified on the content I am responsible for because: I am a trainee of the Harvard Transdisciplinary Research in Energetics and Cancer Center researching behavioral determinants of sleep and obesity in childhood. Among my scientific interests has been research on the relationship of sleep to diabetes.
Any relevant financial relationships? No

I agree to comply with the American Public Health Association Conflict of Interest and Commercial Support Guidelines, and to disclose to the participants any off-label or experimental uses of a commercial product or service discussed in my presentation.