ERIC Number: ED404363
Record Type: Non-Journal
Publication Date: 1996-Dec
Reference Count: N/A
Adjusting for Coverage Bias Using Telephone Service Interruption Data. National Household Education Survey of 1993. Technical Report.
Brick, J. Michael; And Others
The National Household Education Survey (NHES) is a data collection system of the National Center for Education Statistics. The NHES is a telephone survey of the noninstitutionalized civilian population using households selected using random digit dialing methods. Approximately 60,000 households are screened for each administration, and people who meet predetermined criteria are sampled for more detailed or extended interviews. This report is a continuation of research on issues related to biases that result from the inability to survey people who are in households without telephones. It describes a study of an alternative method for adjusting telephone survey data to compensate for coverage bias. The method is based on the observation that telephone subscription varies within households over time. Weighting adjustments that use the data from households that have telephones only sometimes during the year might be an improvement over the current way of adjusting data. Findings indicate that coverage bias associated with households without telephones could be important for some statistics, and data collected on telephone service interruptions can be used to reduce this bias by using a response probability type of adjustment. The benefits of the bias reduction appear to be large enough to offset the variance increases due to increased variability in the weights in the study, although the results may differ for different size samples. Further research is needed, however, before the procedure can be recommended. (Contains 8 tables, 7 figures, and 10 references.) (SLD)
Descriptors: Data Collection, National Surveys, Probability, Research Methodology, Responses, Sample Size, Sampling, Statistical Bias, Telephone Surveys
U.S. Government Printing Office, Superintendent of Documents, Mail Stop: SSOP, Washington, DC 20402-9328.
Publication Type: Numerical/Quantitative Data; Reports - Evaluative
Education Level: N/A
Sponsor: National Center for Education Statistics (ED), Washington, DC.
Authoring Institution: Westat, Inc., Rockville, MD.
Identifiers - Assessments and Surveys: National Household Education Survey