| df_adults | Example of WHO Model Disability Survey data for adults | 
| df_children | Example of WHO Model Disability Survey data for children | 
| fig_density | Plot a density of a score | 
| fig_dist | Plot a distribution of a score | 
| fig_LID | Print a graph showing significant correlations between survey items | 
| fig_poppyramid | Print a population pyramid | 
| helper_checkrow | Check a vector for particular values | 
| helper_indicator | Create indicators from data frame | 
| helper_installation | Check installation of whomds is the most updated | 
| helper_palette | Color palette for the MDS | 
| helper_rowSums | Perform row sum | 
| helper_varslist | Convert list to vector with unique elements | 
| rasch_df_nest | Nest data by age group | 
| rasch_DIF | Perform analysis of Differential Item Functioning (DIF) for Rasch Model | 
| rasch_drop | Drop items from a Rasch Analysis | 
| rasch_factor | Calculate a factor analysis for a Rasch Model | 
| rasch_mds | Top-level function to perform Rasch Analysis on WHO Model Disability Survey data | 
| rasch_mds_children | Top-level function to perform Rasch Analysis on WHO Model Disability Survey data for children | 
| rasch_model | Run the Rasch Model and print diagnostic results | 
| rasch_model_children | Run the multigroup and anchored Rasch Model | 
| rasch_quality_children | Calculate quality of multigroup and anchored Rasch Models | 
| rasch_quality_children_print | Print results of analysis of Rasch Model quality | 
| rasch_rawscore | Add the raw scores to the data and artificial individuals attaining the minimum and/or maximum | 
| rasch_recode | Recode survey items for use in Rasch Analysis | 
| rasch_rescale | Rescale score from Rasch Analysis to range from 0 to 100 | 
| rasch_rescale_children | Rescale score from Rasch Analysis for children to range from 0 to 100 | 
| rasch_split | Split survey items by categories for a Rasch Model | 
| rasch_split_age | Split all survey items by age category for a Rasch Model if they are not discrete | 
| rasch_testlet | Create testlets of survey items for a Rasch Model | 
| SepRel_1.0.1 | Separation Reliability: Person Separation Reliability | 
| table_basicstats | Compute basic statistics of the number of members per group per household | 
| table_unweightedpctn | Compute unweighted percent and N for multiple variables, disaggregated | 
| table_weightedpct | Calculate table of percentages or N of response distribution for survey items, survey weighted, disaggregated |