Early Childhood Program Participation, From The National Household Education Surveys Program Of 2012 - U.s. Department Of Education Page 12
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59survey mode, readers should use caution when comparing estimates to prior NHES
administrations. The U.S. Census Bureau was the data collection agency for the NHES:2012.
The ECPP questionnaires were completed by a parent or guardian who knew about the sampled
child. When weighted, the ECPP data in this report are nationally representative of children
between birth and the age of 5 not yet enrolled in kindergarten. The total number of ECPP cases
in the NHES:2012 data used in this report is 7,892, representing 21.7 million children between
birth and the age of 5.
The NHES screener questionnaire, which is designed to enumerate all of the children in the
sampled household before the main topical survey is sent to the household, had a weighted
response rate of 73.5 percent in 2012. The ECPP survey had a weighted unit response rate of
78.7 percent and an overall response rate of 57.8 percent. An analysis of bias in the NHES:2012
data, described further in appendix A, detected a small amount of measurable bias in
race/ethnicity and income. The level of potential bias detected is considered to be low.
Additional details about the survey methodology, response rates, and data reliability are provided
in appendix A.
Results presented in the tables within this report are weighted. All statements of comparison
made in this report have been tested for statistical significance using two-tailed t-tests and are
significant at the 95 percent confidence level. No adjustments were made for multiple
comparisons. Some estimates that appear different may not be measurably different in a
statistical sense due to sampling error. Readers are directed to the Statistical Tests section of
appendix A for information about how to make comparisons between estimates in the tables.
descriptive
This First Look report updates data presented in an earlier report by presenting selected
information. Readers are cautioned not to draw causal inferences based on the results presented.
Many of the variables examined in this report may be related to one another, but the complex
interactions and relationships among them have not been explored. The variables examined here
are just a few of the variables that can be examined in these data; they were selected to
demonstrate the range of information available from the study. The release of this report is
intended to encourage more in-depth analysis of the data using more sophisticated statistical
methods.
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