Birth risks and outcomes among American
Indian and Alaska Native women in Oregon
Data from Improving Data & Enhancing Access – Northwest (IDEA-NW) Project
(Northwest Tribal EpiCenter) and OR Center for Health Statistics (CHS)
Notes
The data presented come from linked birth certificates from years 2008-2010. Race information on birth certificates may not be
correctly recorded if the mother or father isn’t asked directly. The IDEA-NW Project compared parents’ information on state birth
certificates to the Northwest Tribal Registry to more completely represent Native mothers and infants. This results in more
complete and accurate data for Northwest AI/AN. Please contact us if you are interested in additional data for your community.
Characteristics of Mothers
• AI/AN: American Indian/Alaska Native
• NHW: Non-Hispanic White
NHW
Married/Domestic Partnership
45.1%
69.1%
Unmarried
54.9%
30.9%
Marital Status
Education
Diploma/GED or Higher
Medicaid/other state payment
assistance
WIC use (Special Supplemental
Nutrition Program for Women,
Infants, and Children)
21.6%
78.4%
31.5%
30%
22.5%
20%
10.5%
10%
89.5%
56.5%
34.5%
Birth Rate per 1,000 females
0.1%
4.6%
0.0%
<15 yrs
9.2%
5.2%
1.6%
15-17 yrs
18-19 yrs
20-24 yrs
25-34 yrs
>35 yrs
Age Group
58.2%
35.0%
Average Maternal Age By Race:
• AI/AN: 26 yrs
• NHW: 28 yrs
Physical Characteristics of Mothers
AI/AN
NHW
Normal or Underweight (<25)
45.4%
54.1%
Overweight or Obese (≥25)
54.6%
45.9%
Pre-Pregnancy Diabetes
1.1%
0.7%
Pre-Pregnancy Hypertension
1.5%
1.5%
93.9
Pre-Pregnancy Body Mass Index (BMI)
79.6
55.3
24.1
0.2
10-14 years old*
14.9%
9.9%
0%
AI/AN
0.8
44.6%
40%
Birth Rates by Age Group
NHW
AI/AN
NHW
Percent of Births
AI/AN
55.8%
50%
Demographic Characteristics of Mothers
≤12th grade, no Diploma/GED
Maternal Age at Birth
60%
15-19 years old†
15-44 years old
(General Fertility
Rate)‡
*Birth Rate (10-14 years old):
# births to females ages 10-14 per 1,000 females ages 10-14 per year
†Birth Rate (15-19 years old):
# births to females ages 15-19 per 1,000 females ages 15-19 per year
‡General Fertility Rate (GFR) (15-44 years old):
# live births to females ages 15-44 per 1,000 females ages 15-44 per
year
Northwest Portland Area Indian Health Board
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Characteristics of Pregnancies & Births
Characteristics of Pregnancies
Trimester Entered Prenatal Care
AI/AN
NHW
Gestational Diabetes
5.5%
4.5%
Gestational Hypertension
6.4%
5.3%
Any Smoking During
Pregnancy
25.5%
16.4%
Mothers With STIs (includes
chlamydia, syphilis, gonorrhea,
hepatitis B, hepatitis C, and HSV)
7.3%
5.0%
Yes
94.9%
92.7%
No
5.1%
7.4%
First
Trimester
AI/AN
Second
Trimester
76.0%
19.4%
Mother Tested for HIV
83.4%
Third
Trimester
13.5%
No
Prenatal
Care
0.7%
2.5%
Smoking¥ by Trimester
Characteristics of Births
AI/AN
NHW
AI/AN
30%
24.3%
Gestational Age
9.5%
7.9%
Term (≥37 wks)
90.5%
92.1%
Method of Delivery
Vaginal
69.6%
70.9%
Cesarean
30.4%
29.1%
Low (<2500 g)
7.2%
6.1%
Normal (2500 to <4000 g)
81.9%
82.6%
High (≥4000 g)
10.9%
11.3%
8.5%
6.9%
Birth Weight
Yes
88.7%
91.9%
No
11.3%
8.1%
Percent of Births
25%
Preterm (<37 wks)
Neonatal Care (NICU Admission)
Breastfeeding when leave
hospital
3.6%
1.0%
NHW
NHW
20.3%
17.5%
20%
16.7%
15%
10%
15.7%
13.3%
11.5%
11.1%
5%
0%
3 mos. PrePregnancy
¥Smoking
First
Trimester
Second
Trimester
Third
Trimester
means at least one cigarette per day.
For more information please contact:
Suzanne Zane, DVM
Maternal and Child Health Epidemiologist
Phone: 503-416-3293
E-mail: szane@npaihb.org
Website: http://www.npaihb.org/epicenter/project/
improving_data_enhancing_access_northwest_idea_nw/
Northwest Portland Area Indian Health Board
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