An article in Health Services Research used the 1996–2007 Annual Demographic Survey of the Current Population Survey (CPS) to examine State Children's Health Insurance Program (SCHIP) expansions on public and private coverage of dependents at small firms compared with large firms.  The SCHIP expansions have increased coverage for households in the small group market with no significant crowd-out of private coverage. In contrast, the estimates for large firms are consistent with the substantial crowd-out observed in the literature.

Sieber, E.E. and Florence, C.S. (2010). SCHIP's impact on dependent coverage in the small group health insurance market. Health Services Research, 45(1). http://www.hsr.org/hsr/abstract.jsp?aid=45424036455.

Authors: Eric E. Seiber and Curtis S. Florence