TY - JOUR
T1 - Measuring sleep in young children and their mothers
T2 - Identifying actigraphic sleep composites
AU - Staples, Angela D.
AU - Bates, John E.
AU - Petersen, Isaac T.
AU - McQuillan, Maureen E.
AU - Hoyniak, Caroline
N1 - Funding Information:
The authors disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: The Toddler Development Study has been funded by grants MH099437 from the National Institute of Mental Health and HD073202 from the Eunice Kennedy Shriver National Institute of Child Health and Human Development.
Publisher Copyright:
© The Author(s) 2019.
PY - 2019/5/1
Y1 - 2019/5/1
N2 - The present study considered multiple aspects of sleep in a community sample of young children (at ages 30, 36, and 42 months) and their mothers, using both diaries and actigraphy. Through principal components analysis, 17 of 20 commonly used actigraphy variables were reduced to four main components whose variables formed composites of: Activity, night-to-night Variability, Timing, and Duration. Sleep latency and daytime sleep variables remained separate from the composites. The same components were identified at each age, and for both children and mothers. Furthermore, the sleep composites derived from the components showed greater cross-age stability than individual actigraphy variables. Finally, child and mother sleep composites were related concurrently and longitudinally. These findings demonstrate a systematic and efficient way of summarizing child and mother sleep with actigraphy variables.
AB - The present study considered multiple aspects of sleep in a community sample of young children (at ages 30, 36, and 42 months) and their mothers, using both diaries and actigraphy. Through principal components analysis, 17 of 20 commonly used actigraphy variables were reduced to four main components whose variables formed composites of: Activity, night-to-night Variability, Timing, and Duration. Sleep latency and daytime sleep variables remained separate from the composites. The same components were identified at each age, and for both children and mothers. Furthermore, the sleep composites derived from the components showed greater cross-age stability than individual actigraphy variables. Finally, child and mother sleep composites were related concurrently and longitudinally. These findings demonstrate a systematic and efficient way of summarizing child and mother sleep with actigraphy variables.
KW - actigraphy
KW - child
KW - early childhood
KW - longitudinal
KW - mother
KW - parent
KW - Sleep
UR - http://www.scopus.com/inward/record.url?scp=85061828513&partnerID=8YFLogxK
U2 - 10.1177/0165025419830236
DO - 10.1177/0165025419830236
M3 - Article
AN - SCOPUS:85061828513
VL - 43
SP - 278
EP - 285
JO - International Journal of Behavioral Development
JF - International Journal of Behavioral Development
SN - 0165-0254
IS - 3
ER -