Caesarean section (CS) rates among groups with different insurance status
| Author | Year | State | Year of data collection | CS rate of privately insured (%) | CS rate of publicly insured (%) | CS rate of uninsured (%) |
| Stafford20 | 1990 | California | 1986 | 26.8 | 22.1 | 19.3 |
| Haas et al 15 A | 1993 | Massachusetts | 1984 | 23.0 | 19.4 | 17.2 |
| Haas et al 15 B | 1993 | Massachusetts | 1987 | 25.9 | 20.8 | 22.4 |
| Braveman et al 209 | 1995 | California | 1991 | 27.1 | 21.2 | 23.0 |
| Burns et al 21 | 1995 | Arizona | 1989 | n/a | n/a | n/a |
| Onion et al 210 A* | 1999 | Maine | 1990–1992 | 15.9 | 14.9 | 13.4 |
| Onion et al 210 B* | 1999 | New Hampshire | 1990–1992 | 16.1 | 13.2 | 13.0 |
| Onion et al 210 C* | 1999 | Vermont | 1990–1992 | 14.5 | 13.5 | 9.4 |
| Aron et al 211 | 2000 | Ohio | 1993–1995 | 17.0 | 14.2 | 10.7 |
| Grant22 A | 2005 | All states | 1988 | 27.0 | 23.7 | 17.1 |
| Grant22 B | 2005 | Florida | 1992 | 30.0 | 21.6 | 20.7 |
| Coonrod et al 62 | 2008 | Arizona | 2005 | 26.0 | 19.0 | 20.0 |
| Huesch212 | 2011 | New Jersey | 2004–2007 | 26.7 | 22.5 | 20.3 |
| Kozhimannil et al 103 | 2014 | All states | 2002–2009 | n/a | n/a | n/a |
| Huesch et al 213 | 2014 | California | 2010 | 13.9 | 10.7 | 13.0 |
| Sebastião et al 214 | 2016 | Florida | 2004–2011 | 25.2 | 22.8 | 19.7 |
*The rates are adjusted as compared with the rates from other studies which are crude rates.
Dark grey, CS rates below 10% benchmark.
Light grey, CS rates below 19% benchmark.
n/a, not applicable.