Sadly the article doesn't link to the study by Verto Analytics and I wasn't able to found it on their website (http://www.vertoanalytics.com/verto-reports/ http

Sadly the article doesn't link to the study by Verto Analytics and I wasn't able to found it on their website (http://www.vertoanalytics.com/verto-reports/ http://www.vertoanalytics.com/verto-reports/).