Sentence examples for I imputation from inspiring English sources

The principal analyses were repeated using datasets imputed through two different procedures: (i) imputation of missing covariate data in the sample of 3,629 with complete outcome data; (ii) imputation of missing covariate and outcome data for the entire starting sample of 6,208 adolescents (see Supporting Information Table S2).

Analysis was conducted using three possible datasets: (i) imputation of missing values according to the last observation carried forward (LOCF) methodology; (ii) an observed cases methodology (that is, the absence of data imputation); and (iii) considering patients with missing data as nonresponders.

For every hierarchical clustering methods the CPP values are different, but the general tendencies remain the same: (i) imputation of small rate τ of MVs has always a strong impact on the CPP values, and (ii) the CPP values slowly decreased with the increased of τ. Between 0.5 and 3% of MVs and the CPP values decrease by 1 to 3% per step of 0.5% of MVs.

(i) Naïve imputation substitutes missing values at each locus with 2 θ j, where θ j is the estimated frequency of the major allele at the jth locus.

Possible mechanisms for decreased accuracy include (i) the imputation of variant alleles at sites that do not segregate in a study dataset, (ii) signal dilution from reference haplotypes that are similar to those in a study population but do not carry a variant allele that segregates in that population, and (iii) misleading results from reference haplotypes that carry recurrent mutations.

Therefore, MI should produce more conservative estimates β ^ M I when imputation uncertainty regarding marker-trait associations is high, in order to avoid declaring as significant associations that are due to "fortuitous" imputations.

We further tested the dependency and heteroscedasticity of the residuals obtained from best k-NN imputation (i.e., k = 10), by comparing two residual models using the likelihood ratio test (i.e., a residual intercept model and a random intercept model).

The second form of MI was identical to the first except that PMM was used to impute dietary vitamin C. The third form of MI was JAV, i.e. imputation under a multivariate normal distribution.

According to Weber, this type of coordination would be inefficient, especially because it would be incapable of solving the problem of imputation (i.e. of accurately determining the relative values of capital goods).

Missing data following baseline measurements will be replaced using a non-responder imputation (i.e., baseline observation carried forward) [ 28].

LOCF-IR imputation (i.e., LOCF without setting values after rescue therapy to missing) was used for analysis of lipid parameters.