http://www.usatoday.com/story/money/personalfinance/2016/04/12/worried-irs-audit-read/82075438/

Most people are afraid to take the deductions that the government allows for fear of an audit. The truth is that as long as your deduction is legitimate and you have the proper documentation you should not fear. There are statistics that show that your level of income is the primary motivator behind an audit. The second motivator is incorrect information on your returns such as addresses, social security numbers, income numbers not matching a W-2 or K-1. A distant third is specific deductions. Check out this USA Today article from April 2016.