Stochastic production frontiers with multiply imputed german establishment data... The data suffer from nonresponse in the most important variables (output, capital and labor) leading to the loss of 25 % of the observations and possibly imprecise estimates and invalid test statistics....
Where have all the data gone? stochastic production frontiers with multiply imputed german establishment data... The data suffer from nonresponse in the most important variables (output, capital and labor) leading to the loss of 25% of the observations and possibly imprecise estimates and invalid test statistics....
Sensitivity of anti-denv igm compared to igm reference test in acute and convalescent samples....samples.¶Number of samples tested differed to total number due to either duplicates for RDTs, invalid test or equivocal result.Acute...
Clinical performance of the dna methylation biomarkers shox2 and sept9 and cytology in pes from 114 patients.... Invalid test results due to low DNA content are shown as “nd”....
