# Modify Footers - Add Column Header Footnote Indicating Small Sample Sizes

This rule adds an asterisk to the column header and adds a footnote whenever a Column n is less than a user-specified amount (default is 30).

## How to apply this rule

### For the first time in a project

• Select the table(s)/chart(s) that you wish to apply the rule to.
• Start typing the name of the Rule into the Search features and data box in the top right of the Q window.
• Click on the Rule when it appears in the QScripts and Rules section of the search results.

OR

• Select Automate > Browse Online Library.
• Choose this rule from the list.

### Additional applications of the rule

• Select a table or chart that has the rule and any table(s)/chart(s) that you wish to apply the rule to.
• Click on the Rules tab (bottom-left of the table/chart).
• Select the rule that you wish to apply.
• Click on the Apply drop-down and choose your desired option.
• Check New items to have it automatically applied to new items that you create. Use Edit > Project Options > Save as Template to create a new project template that automatically uses this rule.

## Removing the rule

• Select the table(s)/chart(s) that you wish to remove the rule from.
• Press the Rules tab (bottom-right corner).
• Press Apply next to the rule you wish to remove and choose the appropriate option.

## How to modify the rule

• Click on the Rules tab (bottom-left of the table/chart).
• Select the rule that you wish to modify.
• Click Edit Rule and make the desired changes. Alternatively, you can use the JavaScript below to make your own rule (see Customizing Rules).

## JavaScript

let stat_name = table.getTranslation('Column n');
if (table.availableStatistics.indexOf('Column n') == -1)
form.ruleNotApplicable('this format only applies to tables with the ' + stat_name + ' statistic');

// Set up controls for user input.
let label = form.newLabel('Minimum ' + stat_name + ':');
let numeric_up_down  = form.newNumericUpDown('threshold');
numeric_up_down.setDefault(30);
numeric_up_down.setIncrement(1);
numeric_up_down.setMaximum(999999999);
let description = form.newLabel('Adds an asterisk to the column header and adds a footnote whenever the ' +
stat_name + ' is less than a user-specified amount.');
description.lineBreakAfter = true;
form.setInputControls([description, label, numeric_up_down]);
let min_column_n = numeric_up_down.requireValue();
form.setSummary('Add a column header footnote when ' + stat_name + ' < ' + min_column_n);

let footnote_flag = false;
let column_ns = table.get('Column n');// Get the Column N statistics.
let column_labels = table.columnLabels;// Get the column labels.
for (let column = 0; column < table.numberColumns; column++) {// For each column...
let column_n = column_ns[0][column];// Get the column n statistic (from the cell in the first row).
if (column_n < min_column_n) {
column_labels[column] += '*';// Put a marker on this column's label.
footnote_flag = true;
}
}
if (footnote_flag) {
table.columnLabels = column_labels;// Store the adjusted column labels and footnotes.
let footnotes = table.extraFooters;// Make a list of extra footnotes.
footnotes.push('*column has less than ' + min_column_n + ' respondents.');// Add an extra footnote.
table.extraFooters = footnotes;
}