Extract a parameter from a list of results

Used to extract parameter estimates and standard errors from lists produced by with.imputationList.

MIextract(results, expr, fun)

Arguments

results

A list of objects

expr

an expression

fun

a function of one argument

Value

A list

Details

If expr is supplied, it is evaluated in each element of results. Otherwise each element of results is passed as an argument to fun.

See also

with.imputationList, MIcombine

Examples

data(smi)
models<-with(smi, glm(drinkreg~wave*sex,family=binomial()))

betas<-MIextract(models,fun=coef)
vars<-MIextract(models, fun=vcov)
summary(MIcombine(betas,vars))
#> Multiple imputation results:
#>       MIcombine.default(betas, vars)
#>                 results         se      (lower     upper) missInfo
#> (Intercept) -2.25974358 0.26830731 -2.78584855 -1.7336386      4 %
#> wave         0.24055250 0.06587423  0.11092461  0.3701804     12 %
#> sex          0.64905222 0.34919264 -0.03537187  1.3334763      1 %
#> wave:sex    -0.03725422 0.08609199 -0.20623121  0.1317228      7 %