Temporal Trends in Chorioamnionitis by Maternal Race/Ethnicity and Gestational Age (1995–2010)
Table 3
Chorioamnionitis rate per 100 singleton births by race/ethnicity at term gestation in KPSC Hospitals, 1995–2010.
Chorioamnionitis rate at preterm (<37 wks) and term (37–42 wks) gestations
Period
White
Black
Hispanic
Asian/PI
<37 wks
37–42 wks
<37 wks
37–42 wks
<37 wks
37–42 wks
<37 wks
37–42 wks
1995-96
5.02
1.87
7.29
2.29
5.93
2.54
5.87
3.84
1997-98
5.18
2.12
7.36
2.43
6.11
2.84
6.07
4.41
1999-00
5.38
2.39
7.68
2.60
6.36
3.12
6.68
5.02
2001-02
5.47
2.66
7.87
2.78
6.62
3.49
6.81
5.75
2003-04
5.74
3.11
8.35
2.98
7.13
4.09
7.21
6.58
2005-06
6.21
3.48
8.83
3.21
7.50
4.57
7.70
7.30
2007-08
5.99
3.89
8.88
3.55
7.53
5.08
7.74
8.22
2009-10
6.00
4.45
8.90
3.69
7.73
5.98
8.39
9.41
for trend
<.001
<.001
.049
<.001
<.001
<.001
<.001
<.001
Relative increase % (95% CI), 2009-10 versus 1995-96
21 (9, 78)
138 (108, 173)
24 (9, 81)
62 (30, 101)
31 (3, 66)
135 (114, 159)
44 (9, 127)
145 (109, 188)
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.
