Therefore the only imputation carried out was based on simple single locus phasing and imputation rules and the segregation analysis procedures of Kerr and Kinghorn [ 18].
In addition, I also proposed several alternative strategies, all based on simple ideas for missing value imputation.
Instead, it is based on simple mathematics.
The average partial effect (APE) of trade union membership and its standard error in the CRE_Poisson specifications based on the second simple imputation method (SI 2) and the multiply imputed data set (MI) are very similar in size to the FE-estimates, though marginally insignificant in the MI case.
Most importantly, the estimated coefficients of the union membership dummy in the FE specifications based on the second simple imputation method (SI 2) and on the multiply imputed data set (MI) are significantly different from zero at the 6 and 9% level, respectively.
When we restrict our sample to respondents who work in the private sector, the estimated union membership coefficients are comparable to those obtained for the full sample depicted in Tables 2 and 3, with the exception of the FE and CRE_Poisson specifications based on the second simple imputation strategy (SI 2).
Additionally, the FE specification for the service sector using the sample based on the second simple imputation approach (SI 2) yields a significant coefficient of individual union membership which is about twice the magnitude of that detected for the full sample (cf. Table 3, specification (2)).
Multiple imputation is also employed to assess the uncertainty due to imputation since results based on imputation alone, especially when linking imputed locations to other spatial data, may be questionable.
The accuracies of imputation of all the three haplotype based methods are much higher compared to imputation based on a simple sampling strategy using the allele frequencies of SNP in the reference set.
P ( m | x ^ t, u, m, y t, r ) denotes the posterior probability of CG m based on its imputation.
