One difficulty in studying women-led startup companies is that a firm may have multiple founders or owners of both genders. Various research studies deal with the problem in different ways: They count women’s firms as those owned solely or ―primarily‖ by women; they break out the mixed-ownership firms separately (or exclude them); or, they track startup activity by individuals rather than by firms. The Kauffman Index of Entrepreneurial Activity (KIEA) tracks individuals, using data from the Current Population Survey of the . Census and the Bureau of Labor Statistics. .