Sentence examples for missing categories for from inspiring English sources

To maximize sample sizes in multivariable analyses, we included "missing" categories for all potential confounders.

As results from complete-case analyses can be biased (Sterne et al, 2009) we also analysed the full cohort and included missing categories for stage, PS and comorbidity, although this too can result in bias.

This was done by creating a missing category for the missing values of each variable.

For other control variables, we created a "missing" category for missing data.

The missing information for the confounding factors was coded as a missing category for data analysis.

The missing category for each stratified variable was excluded from the stratified analyses.

Individuals with missing data for a variable of interest were placed into a "missing" category for that variable and were included in all models.

In "both missing" category for blacks, the adjusted RR for placental abruption showed no difference in rates across maternal age strata.

However, the analyses were repeated for all patients by treating the missing category for discrete variables as a separate category and by imputing the sample mean over all patients for continuous variables.

For comparison with the analyses using imputed data for smoking status and body mass index, we also ran complete case analyses including only cases and controls with complete data as well as analyses using indicator variables for missing categories of smoking, deprivation and body mass index.

For individuals missing data on continuous covariates, values were imputed from sample means; missing categories were created for categorical variables with missing data.