| calculate_age_from_dob | Function to calculate age from date of birth |
| calculate_age_from_year | Function to calculate age from year of birth |
| check_column_exists | Function to check the given column exists |
| check_col_pattern_colname | ############################################################################ Function to check if a given pattern is contained in the column names of a data |
| check_load_packages | Function to check the package is installed, if not install |
| cohensd | Function to find the effect size Cohen's d |
| convert_date_numeric_stdform | Helper function to keep date formats in year-month-date |
| convert_date_string_stdform | Helper function to keep date formats in year-month-date |
| convert_to_number | Function that convert a number represented as character array |
| descriptive_stats_col_excl_nrcode | Function to return descriptive statistics, sum, no of observations, mean, mode. median, range, standard deviation and standard error |
| get_colno_pattern_colname | Function to return the column number if a given pattern is contained in the column names of a data |
| get_columnno_fornames | Function to return the column number for column name |
| get_contents_cols | Function to return the unique contents of the column given the column name |
| get_effect_size | Function to get the effect size |
| get_mode_from_vector | ############################################################################ Function to return mode |
| get_sem | ############################################################################ Function to estimate standard error of the mean |
| get_summary_gtsummary | Function to return the summary table using gtsummary package |
| get_value_from_codes | Function to get the actual value of column content if its coded |
| keep_required_columns | ############################################################################ Function to keep only certain variables |
| present_mean_sd_rmna_text | ############################################################################ Function to present the mean and sd of a data set in the form Mean (SD) |
| represent_categorical_data_exclude_missing | Function to find the number and percentages of categories |
| represent_categorical_data_forsubgroups | Function to find the number and percentages of categories |
| represent_categorical_data_include_missing | Function to find the number and percentages of categories |
| represent_categorical_textdata | Function to represent categorical data in the form - numbers (percentage) |
| represent_numerical_data_forsubgroups | Function to find the number and percentages of categories |
| return_longitudinal_summary | Function to get the longitudinal summary mean and sd |
| return_subgroup_omitna | Function to return a subgroup when certain variable equals the given value while omitting those with NA |
| return_subgroup_withNA | Function to return a subgroup when certain variable equals the given value while omitting those with NA |
| test_age | Function to check the format of 'age' in data |
| test_columnnames | Function to test column names of a data being different from what specified |
| test_column_contents | Function to check the format of column contents |
| test_data_numeric | Function to check the format of a numeric column |
| test_data_numeric_norange | Function to check the format of a numeric column when the values are not bounded |
| test_data_string | Function to check the format of a string column |
| test_data_string_restriction | Function to check the format of a string column when the string values are given |
| test_file_exist_read | Function to throw error on invalid directory or file and if not readable |
| test_gender | Function to check the format of 'gender' column in data |