To download the files, click on the links shown or right-click on the file name and save it. You will not be able to open STATA or SPSS files unless your computer has the corresponding software available. The Questionnaires and Technical Information documents are saved as .pdf files which can be opened with pdf reader software available for free online such as Adobe Acrobat Reader get.adobe.com/reader/ and Foxit Reader www.foxitsoftware.com. 