| naflex | naflex: Flexible Options for Handling Missing Values |
| na_check | Check missing values conditions |
| na_check_consec | Check missing values conditions (single condition) |
| na_check_n | Check missing values conditions (single condition) |
| na_check_non_na | Check missing values conditions (single condition) |
| na_check_prop | Check missing values conditions (single condition) |
| na_consec | Calculate missing value properties |
| na_n | Calculate missing value properties |
| na_non_na | Calculate missing value properties |
| na_omit_if | Conditionally omit missing values |
| na_omit_if_consec | Conditionally omit missing values (single condition) |
| na_omit_if_n | Conditionally omit missing values (single condition) |
| na_omit_if_non_na | Conditionally omit missing values (single condition) |
| na_omit_if_prop | Conditionally omit missing values (single condition) |
| na_prop | Calculate missing value properties |