Temporal Trends in Chorioamnionitis by Maternal Race/Ethnicity and Gestational Age (1995–2010)
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
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.
