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These are the variables that are used in the matching methods to generate the matched data sets.
CMF estimation was done using mixed-effects negative binomial or Poisson regression with the matched data.
For example, a directory entry followed by raw-bytes messages can be used to send data for a given file, commands similar to grep may send messages with file addresses before sending the matched data, and so on.
Then, to correct for the possible bias from observable heterogeneities, we re-estimated the above three frontiers (pooled, participants, and non-participants) using the matched data set.7 However, results of LR test again supported separate frontiers for each groups.
The matched data have the advantage of administrative information on SSDI application and receipt that is more accurate than self-reports, plus household and individual characteristics that are not usually available in administrative records.
Before examining the results, it is important to take a look at the performance of the matching estimators and the distribution of observable covariates (balancing) of the matched data.
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Although it abandonded efforts to rate the quality of colleges, the federal government matched data from the federal student financial aid system to federal tax returns.
The analysis of matched data requires specific statistical methods.
Statistical analyses were conducted on the original and matched data.
Over 99% of the data entered with EpiSurveyor matched data from the paper surveys.
Many researchers employ the paired t-test to evaluate the mean difference between matched data points.
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