Table 2.

Demographic and Socioeconomic Characteristics of the Measured and Parent-Reported Components of the Child Development Supplement of the Panel Study of Income Dynamics, United States, 1997^a

Characteristic	Reported Weight and Measured Height			Reported Weight and Height			Total
	Mean	%	95% CI	Mean	%	95% CI	Mean	%	95% CI
Female		49.5	46.4, 52,5		51.0	46.4, 55.5		49.9	47.3, 52.4
Mother's age at child's birth, yearsb	27.3		26.9, 27.7	27.1		26.5, 27.6	27.2		26.9, 27.6
Race/ethnicity of childc
Non-Hispanic white		65.4	61.7, 68.9		66.8	61.9, 71.3		65.8	62.7, 68.7
Hispanic		9.3	7.2, 11.8		14.3	10.7, 19.0		10.7	8.7, 13.0
Non-Hispanic black		17.7	15.2, 20.5		12.9	10.5, 15.6		16.3	14.3, 18.6
Non-Hispanic other		7.7	5.7, 10.3		6.0	4.1, 8.9		7.2	5.7, 9.2
Family incomed
<$25,000		26.1	22.9, 29.7		24.3	20.0, 29.0		25.6	22.8, 28.6
$25,000–$49,999		29.8	26.6, 31.2		32.7	28.1, 37.6		30.6	27.9, 33.5
$50,000–$74,999		20.4	17.8, 23.4		20.0	16.1, 24.6		20.3	17.9, 22.9
≥$75,000		23.7	20.8, 26.8		23.1	18.8, 27.9		23.5	21.0, 26.2
Total	57,468		52,671, 62,265	53,332		49,100, 57,563	56,320		52,619, 60,022
Observations
Weighted % of PSID-CDS total		72.3	69.8, 74.6		27.7	25.4, 30.3		100.0
Unweighted person-years	2,029			769			2,798

Abbreviations: CI, confidence interval; PSID-CDS, Child Development Supplement of the Panel Study of Income Dynamics.

^a Means and percentages were weighted by using sample weights; confidence interval estimates were adjusted for clustering of children in families.

^b Analyses excluded observations with item nonresponse on mother's age at child's birth (177 children).

^c Analyses excluded observations with item nonresponse on race/ethnicity (5 children).

^d Family income was adjusted to year-2000 US dollars; item nonresponse on income was imputed by the data providers.