International Journal of Behavioral Nutrition and Physical Activity

Table 1 Descriptive Characteristics of the Time Invariant Covariates for the NICHD Study of Early Child Care and Youth Development

From: Parenting and the decline of physical activity from age 9 to 15

	Boys (N = 396)		Girls (N = 405)
	Count	%	Count	%
Race/Ethnicity ^a
Nonwhite	95	23.99	87	21.48
White	301	76.01	318	78.52
Low Income at Age 9
Yes	99	25.00	110	27.16
No	297	75.00	295	77.53
Puberty
Early	71	17.93	91	22.47
Later	325	82.07	314	77.53
High Monitoring - Age 11 ^b
Yes	169	42.68	203	50.12
No	227	57.32	202	49.88
Region of Country
Midwest	73	18.43	100	24.69
Northeast	108	27.27	116	28.64
South	116	29.29	102	25.19
West	99	25.00	87	21.48

Abreviations: NICHD = National Institute of Child Health and Human Development
^a Race/Ethnicity was defined by the mother and recorded at the 1-month interview. Nonwhite includes African American, Hispanic, Asian and other
^b Possible range of Parental Monitoring Score is 1 to 4. High parental monitoring was defined as a score of 4.

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ISSN: 1479-5868

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