{"id":26432,"date":"2018-01-31T14:29:13","date_gmt":"2018-01-31T14:29:13","guid":{"rendered":"https:\/\/www.snapsurveys.com\/support-snap11\/?page_id=26432"},"modified":"2019-01-10T15:09:29","modified_gmt":"2019-01-10T15:09:29","slug":"anonymising-data-after-carrying-out-your-survey","status":"publish","type":"page","link":"https:\/\/www.snapsurveys.com\/support-snap11\/worksheets\/anonymising-data-after-carrying-out-your-survey\/","title":{"rendered":"Anonymising data after carrying out your survey"},"content":{"rendered":"<p>It is possible to anonymize your survey data after you have carried your survey out. This may be particularly useful where you want to continue to work with your survey data, but don\u2019t need to keep hold of it in a form which still identifies your respondents.<\/p>\n<p>Snap stores respondent data in a file with the survey name and extension .rdf (respondent data file). Replies for each respondent are held in individual records in that file. When you delete the variable that holds the personal information from the survey file (.mdf), the details remain in the data file. It is possible to remove the personal data entirely.<\/p>\n<h3>Summary of steps<\/h3>\n<p><a href=\"#o21ad\" target=\"_self\">Step 1: Back-up the survey<\/a><br \/>\n<a href=\"#o22ad\" target=\"_self\">Step 2: Use the bulk change feature<\/a><br \/>\n<a href=\"#o23ad\" target=\"_self\">Step 3: Check the data to ensure your changes are correct<\/a><br \/>\n<a href=\"#o24ad\" target=\"_self\">Step 4: Delete the back-up<\/a><\/p>\n<h4><a name=\"o21ad\"><\/a>Step 1: Back-up the survey<\/h4>\n<p>At the <strong>Survey Overview<\/strong>, highlight the appropriate survey and choose <strong>File<\/strong> | <strong>Archive Survey<\/strong>. Ensure <strong>Include Raw Data<\/strong> is ticked | click <strong>Browse<\/strong> and choose a location to save the archived file | click <strong>Save<\/strong> | click <strong>OK<\/strong>.<\/p>\n<div><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-26874\" src=\"https:\/\/www.snapsurveys.com\/support-snap11\/wp-content\/uploads\/2018\/04\/Archive-survey.gif\" alt=\"Archive-survey\" width=\"388\" height=\"169\" srcset=\"https:\/\/www.snapsurveys.com\/support-snap11\/wp-content\/uploads\/2018\/04\/Archive-survey.gif 388w, https:\/\/www.snapsurveys.com\/support-snap11\/wp-content\/uploads\/2018\/04\/Archive-survey-150x65.gif 150w\" sizes=\"auto, (max-width: 388px) 100vw, 388px\" \/><\/div>\n<h4><a name=\"o22ad\"><\/a>Step 2: Use the bulk change feature<\/h4>\n<p>Open the survey.<\/p>\n<p>Click <img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-22698\" src=\"https:\/\/www.snapsurveys.com\/support-snap11\/wp-content\/uploads\/2016\/07\/VariablesButton.png\" alt=\"multiples icon\" width=\"24\" height=\"22\" \/> to open the <strong>Variables<\/strong> window and scroll down to display the variable you are interested in (Q<strong>1<\/strong> in this example).<\/p>\n<p>Click the <strong>Tailor<\/strong> icon <img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-26881\" src=\"https:\/\/www.snapsurveys.com\/support-snap11\/wp-content\/uploads\/2018\/04\/Tailor-Icon-1.gif\" alt=\"Tailor Icon\" width=\"32\" height=\"30\" \/> on the toolbar to tailor the <strong>Variables<\/strong> window.<\/p>\n<p>In the <strong>Variable Tailoring<\/strong> window, tick Source and click <strong>Use<\/strong>.<\/p>\n<p>Note the source position for the variable you wish to change (834 to 933 in this example).<\/p>\n<div><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-26877\" src=\"https:\/\/www.snapsurveys.com\/support-snap11\/wp-content\/uploads\/2018\/04\/Variable-Tailoring.gif\" alt=\"Variable-Tailoring\" width=\"606\" height=\"265\" srcset=\"https:\/\/www.snapsurveys.com\/support-snap11\/wp-content\/uploads\/2018\/04\/Variable-Tailoring.gif 606w, https:\/\/www.snapsurveys.com\/support-snap11\/wp-content\/uploads\/2018\/04\/Variable-Tailoring-150x66.gif 150w, https:\/\/www.snapsurveys.com\/support-snap11\/wp-content\/uploads\/2018\/04\/Variable-Tailoring-500x219.gif 500w\" sizes=\"auto, (max-width: 606px) 100vw, 606px\" \/><\/div>\n<p>Click <img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-26700\" src=\"https:\/\/www.snapsurveys.com\/support-snap11\/wp-content\/uploads\/2018\/03\/data_entry.png\" alt=\"Data Window\" width=\"20\" height=\"20\" \/> to display the survey<strong> Data Window<\/strong>.<\/p>\n<p>Click <img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-26882\" src=\"https:\/\/www.snapsurveys.com\/support-snap11\/wp-content\/uploads\/2018\/04\/arrow.gif\" alt=\"Arrow\" width=\"30\" height=\"28\" \/> on the Data window toolbar to display the Bulk Changes dialog box.<\/p>\n<div><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-26875\" src=\"https:\/\/www.snapsurveys.com\/support-snap11\/wp-content\/uploads\/2018\/04\/Bulk-change.gif\" alt=\"Bulk-change\" width=\"367\" height=\"130\" srcset=\"https:\/\/www.snapsurveys.com\/support-snap11\/wp-content\/uploads\/2018\/04\/Bulk-change.gif 367w, https:\/\/www.snapsurveys.com\/support-snap11\/wp-content\/uploads\/2018\/04\/Bulk-change-150x53.gif 150w\" sizes=\"auto, (max-width: 367px) 100vw, 367px\" \/><\/div>\n<p>The<strong> Filter<\/strong> field is used to select the data codes to be changed or to exclude the ones that you do not want to change. The Change field is used to enter the new data. The new data must be surrounded by quotation marks.<\/p>\n<p>Set <strong>Filter<\/strong> to <code><span class=\"#a6a6a6\" style=\"color: #a6a6a6;\">Q1 ok<\/span><\/code> this filter finds all valid responses to Q1. Set <strong>Change<\/strong> to <code><span class=\"#a6a6a6\" style=\"color: #a6a6a6;\">raw (834 to 933) as \u201c \u201c <\/span><\/code>to change the values in position 834 to 933 in the raw data file to a space character.<\/p>\n<p><code><span class=\"#a6a6a6\" style=\"color: #a6a6a6;\">raw<\/span><\/code> tells Snap to make the changes in the raw data file. (You could also use<code><span class=\"#a6a6a6\" style=\"color: #a6a6a6;\"> * (834 to 933) as \u201c \u201d)<\/span><\/code>.<\/p>\n<div><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-26876\" src=\"https:\/\/www.snapsurveys.com\/support-snap11\/wp-content\/uploads\/2018\/04\/Bulk-change-2.gif\" alt=\"Bulk-change-2\" width=\"377\" height=\"140\" srcset=\"https:\/\/www.snapsurveys.com\/support-snap11\/wp-content\/uploads\/2018\/04\/Bulk-change-2.gif 377w, https:\/\/www.snapsurveys.com\/support-snap11\/wp-content\/uploads\/2018\/04\/Bulk-change-2-150x56.gif 150w\" sizes=\"auto, (max-width: 377px) 100vw, 377px\" \/><\/div>\n<p>Click<strong> [OK]<\/strong> to make the changes.<\/p>\n<p>Repeat Step 2 above for all variables containing data you wish to remove.<\/p>\n<h4><a name=\"o23ad\"><\/a>Step 3: Check the data to ensure your changes are correct<\/h4>\n<p>This can be done via the<strong> Data Window <img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-26700\" src=\"https:\/\/www.snapsurveys.com\/support-snap11\/wp-content\/uploads\/2018\/03\/data_entry.png\" alt=\"Data Window\" width=\"20\" height=\"20\" \/><\/strong>\u00a0by scrolling through the cases or filtering. It can also be done via the analysis icons or reports.<\/p>\n<p>You should now have a file with the personal data removed.<\/p>\n<h4><a name=\"o24ad\"><\/a>Step 4: Delete the back-up<\/h4>\n<p>Locate the Archived survey file you created in Step 1 above, archived files have the .adf file extension and delete it.<\/p>\n<p>Remember if you have made backups to your own systems they will also need to be deleted.<\/p>\n<p>You should also familiarize yourself with the Snap file structure to ensure you don\u2019t have any other files on your system that may contain personal data.<\/p>\n<p><a href=\"https:\/\/www.snapsurveys.com\/help\/#12640\" target=\"_blank\" rel=\"noopener\">https:\/\/www.snapsurveys.com\/help\/#12640<\/a>.<\/p>\n<p class=\"bodytext\">If there is a topic you would like a worksheet on, email to <a title=\"\" href=\"mailto:snapideas@snapsurveys.com\" target=\"_self\">snapideas@snapsurveys.com<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><a class=\"ninja_pages_read_more\"  href=\"https:\/\/www.snapsurveys.com\/support-snap11\/worksheets\/anonymising-data-after-carrying-out-your-survey\/\"><\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"parent":43,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"page-templates\/child-page.php","meta":{"_acf_changed":false,"footnotes":""},"class_list":{"0":"post-26432","1":"page","2":"type-page","3":"status-publish","5":"search_category-support-hub"},"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.8 - 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