With panel data important issues can be resolved that can not beaddressed with cross--sectional data. A major drawback … from the original populationas replacements for units who have dropped out of the panel, aso--called refreshment sample … different results than models that assume that themissing data process is ignorable or conventional econometric modelsfor panel …

Through Monte Carlo experiments the small sample behavior is examinedof various inference techniques for dynamic panel …

individual may enter a prolonged depression. We investigatethis using unique longitudinal panel data that track labor market …