For those interested in more information on job creation in the Employment Dynamics data
base these three article provide very good information.
Cordelia Okolie, “Why Size Class Methodology Matters in Analyses of Net and Gross Job Flows.” July 2004 Monthly Labor Review
Jessica Helfand, Akbar Sadeghi and David Talan, “Employment Dynamics: Small and Large Firms Over the Business Cycle.” March 2007 Monthly Labor Review
Tim Kane, The Importance of Startups in Job Creation and Job Destruction (PDF from the Kauffman Foundation Research Series, July, 2010)
All three are pdf files and for the second article the link takes you to the Monthly Labor Review where you can directly access the article.
The subject is more complex than generally thought as different methodologies can create significantly different results.