Hirsch, Barry T.; Schumacher, Edward J. - 2021
being studied (e.g., union status) is not a criterion used to match donors to nonrespondents. An expression for "match bias … proportion with imputed earnings. Union wage gap estimates with match bias removed are presented for 1973-2001. Estimates in … recent years are biased downward 5 percentage points. Bias in gap estimates accompanying other non-match criteria (public …
