Table 2.
Chorioamnionitis diagnosis rate per 100 singleton births by Race/ethnicity in KPSC Hospitals, 1995–2010.
| Period | Total births | Overall rate (%) | Maternal Race/Ethnicity | |||
|---|---|---|---|---|---|---|
| White | Black | Hispanic | Asian/PI | |||
| 1995-96 | 51495 | 2.67 | 1.79 | 2.20 | 2.38 | 3.59 |
| 1997-98 | 62432 | 2.98 | 2.01 | 2.27 | 2.63 | 4.08 |
| 1999-00 | 63971 | 3.32 | 2.28 | 2.51 | 2.93 | 4.66 |
| 2001-02 | 60007 | 3.69 | 2.59 | 2.78 | 3.37 | 5.45 |
| 2003-04 | 57511 | 4.30 | 3.15 | 3.07 | 4.07 | 6.39 |
| 2005-06 | 57062 | 4.78 | 3.51 | 3.36 | 4.56 | 7.13 |
| 2007-08 | 60682 | 5.23 | 3.84 | 3.58 | 5.04 | 7.93 |
| 2009-10 | 58661 | 5.96 | 4.32 | 3.65 | 5.82 | 9.02 |
|
| ||||||
| P for trend from 1995 to 2010 | <.001 | <.001 | .001 | <.001 | <.001 | |
|
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| Relative increase % (95% CI), 2009-10 versus 1995-96 | 126 (113, 149) | 141 (109, 178) | 66 (33, 108) | 145 (122, 171) | 151 (113, 197) | |
Rates are expressed in percent; Adjustments were made for maternal age, education, median household income, parity, prenatal care, and smoking during pregnancy; Asian/PI: Asian and Pacific Islanders; CI: confidence interval.