| add_weights_cluster | Add a column of cluster survey weights to a data frame. | 
| add_weights_strata | Add a column of stratified survey weights to a data frame. For use in surveys where you took a sample population out of a larger source population, with a simple-random or stratified survey design. | 
| age_categories | Create an age group variable | 
| assert_positive_timespan | Find the first date beyond a cutoff in several columns | 
| attack_rate | Rates and Ratios | 
| augment_redundant | Cosmetically relabel all columns that contains a certain pattern | 
| case_fatality_rate | Rates and Ratios | 
| case_fatality_rate_df | Rates and Ratios | 
| constrain_dates | Find the first date beyond a cutoff in several columns | 
| fac_from_num | create factors from numbers | 
| find_breaks | Automatically calculate breaks for a number | 
| find_date_cause | Find the first date beyond a cutoff in several columns | 
| find_end_date | Find the first date beyond a cutoff in several columns | 
| find_start_date | Find the first date beyond a cutoff in several columns | 
| fmt_ci | Helper to format confidence interval for text | 
| fmt_ci_df | Helper to format confidence interval for text | 
| fmt_count | Counts and proportions inline | 
| fmt_pci | Helper to format confidence interval for text | 
| fmt_pci_df | Helper to format confidence interval for text | 
| gen_polygon | Fake spatial data as polygons This function returns a polygon which is split in to regions based on a supplied vector of names | 
| gen_population | Generate population counts from estimated population age breakdowns. | 
| group_age_categories | Create an age group variable | 
| merge_ci_df | Unite estimates and confidence intervals | 
| merge_pci_df | Unite estimates and confidence intervals | 
| mortality_rate | Rates and Ratios | 
| rename_redundant | Cosmetically relabel all columns that contains a certain pattern | 
| unite_ci | Unite estimates and confidence intervals | 
| zcurve | Create a curve comparing observed Z-scores to the WHO standard. |