Table 2.
Adjusted odds ratios for risk of caesarean delivery
| Characteristic | Adjusted OR (95% CI) |
|---|---|
| L&D Institution | |
| Public (Reference) | 1.0 |
| Social Security | 2.01 [1.14, 3.56]* |
| Private | 1.77 [1.22, 2.56]** |
| Region | |
| Urban (Reference) | 1.0 |
| Rural | 0.75 [0.68, 0.83]*** |
| Age, years | 1.05 [1.04, 1.06]*** |
| Parity | 0.84 [0.81, 0.88]*** |
| Language | |
| Spanish (Reference) | 1.0 |
| Indigenous | 0.55 [0.41, 0.75]*** |
| Education | |
| None (Reference) | 1.0 |
| Primary | 0.91 [0.59, 1.40] |
| Secondary | 1.03 [0.67, 1.59] |
| Superior/ Postgrad | 1.36 [0.87, 2.12] |
| First Prenatal Care Visit Month | 0.96 [0.94, 0.99]** |
| Number of Prenatal Care Visits | 1.02 [1.01, 1.03]*** |
| Medical Indications | |
| Preeclampsia/Eclampsia | 1.14 [1.04, 1.24]** |
| Fetal Malpresentation | 4.52 [3.93, 5.20]*** |
| Year | |
| 1992 (Reference) | 1.0 |
| 1993 | 0.89 [0.62, 1.26] |
| 1994 | 1.27 [0.85, 1.90] |
| 2002 | 1.79 [1.25, 2.57]** |
| 2003 | 1.46 [1.04, 2.06]* |
| 2004 | 1.21 [0.82, 1.69] |
| 2007 | 1.55 [0.96, 2.49] |
| 2008 | 1.74 [1.26, 2.40]*** |
| 2009 | 1.44 [1.06, 1.97]* |
| 2010 | 1.49 [1.10, 2.02]** |
| 2011 | 1.75 [1.30, 2.35]*** |
| 2012 | 2.02 [1.49, 2.72]*** |
| Year * L&D Institution | |
| 1993*Social Security | 0.91 [0.41, 2.01] |
| 1994*Social Security | 0.79 [0.31, 2.01] |
| 2002*Social Security | 0.84 [0.34, 2.11] |
| 2003*Social Security | 1.65 [0.55, 4.90] |
| 2004*Social Security | 0.79 [0.20, 3.03] |
| 2007*Social Security | 0.95 [0.24, 3.77] |
| 2008*Social Security | 1.57 [0.55, 4.49] |
| 2009*Social Security | 0.98 [0.42, 2.28] |
| 2010*Social Security | 1.17 [0.53, 2.62] |
| 2011*Social Security | 1.03 [0.51, 2.08] |
| 2012*Social Security | 1.13 [0.54, 2.37] |
| 1993*Private | 1.24 [0.75, 2.05] |
| 1994*Private | 0.95 [0.53, 1.70] |
| 2002*Private | 1.04 [0.62, 1.74] |
| 2003*Private | 1.34 [0.81, 2.22] |
| 2004*Private | 1.53 [0.87, 2.67] |
| 2007*Private | 1.23 [0.56, 2.71] |
| 2008*Private | 1.70 [1.04, 2.77]* |
| 2009*Private | 2.24 [1.40, 3.59]*** |
| 2010*Private | 2.06 [1.30, 3.27]** |
| 2011*Private | 1.99 [1.26, 3.14]** |
| 2012*Private | 2.22 [1.38, 3.58]*** |
*
denotes a p-value of <0.05,
**
denotes a p-value of ≤0.01,
***
denotes a p-value of ≤0.001
The is adjusted for all variables listed in the table
Age, Parity, First prenatal care visit month, and Number of prenatal care visits are analyzed continuously, and the adjusted odds ratio presented represents an incremental change in risk of caesarean delivery for each year of age, child born, month later of first prenatal care visit, and for each additional visit, respectively.