(maternal nativity us/non-us) relative risk (rr) for teen ... · teen pregnancy in the united...

Teen pregnancy in the United States is higher

when the nativity of the mother is inside the US Jagjit Singh Teji MD

Division of Neonatology, Department of Pediatrics, Ann and Robert H. Lurie Children’s Hospital, Chicago, IL

Abstract

Teen pregnancy in the United States is higher when the nativity of the mother

is inside the US

Background:

As the latest vital statistics have shown that teen pregnancy is dropping in the US

while there are sporadic studies implicating that teen pregnancy in the US is less

likely when the nativity of the mother is outside the 50 states of the US.

Purpose:

To test the hypothesis that teen pregnancy is lower in the mothers whose nativity is

outside the 50 states of the US.

Methods:

VSS data from the NCHS was analyzed for the years 1995 thru 2002. Logistic

regression analysis was performed with the dependent variable teen pregnancy, TP,

with maternal place of birth, MPB as independent variable. The confounding

variables were maternal race, gestational age, GA, birth weight, BWT, maternal

conditions such as diabetes, hypertension, pregnancy induced hypertension,

maternal exposure to alcohol and tobacco. Also considered variables were prenatal

care , plurality, and gender. Stata 12.0 was utilized for statistical analysis.

Results:

Out of over 31 million records for births during the period 1995 thru 2002 over 25

million births had usable data. Over all, births to teen mothers were significantly

more likely if their nativity was within the 50 states of the US , OR 2.49 cf (95%)

2.48-2.50 while controlling for other confounders. Every ethnicity and race was

affected by the maternal nativity.

Conclusion:

We accept the hypothesis that teen pregnancy is lower when the maternal nativity is

outside the US.

Reason for higher teen pregnancy rates when mother’s nativity is from the US is

concerning and needs to be decreased.

Objectives

Teenage motherhood is burdensome both at a personal and

community level in any population. Recently a report from

CDC, Birth Rates for U.S. Teenagers Reach Historic Lows

for All Age and Ethnic Groups, indicated a success in our

efforts. However an area of interest , along the lines of whether

the nativity of the mother mattered. Various articles with

respect to nativity of the pregnant mothers implied that

mothers with nativity in the US tend to have poorer outcomes

than those with nativity elsewhere.

Why ? United States is the most resourceful country in the

world.

We wanted the see the trend in pregnancies to the teenage

mothers who delivered in the US with respect to their nativity.

Purpose:

To test the hypothesis that teen pregnancy is lower in the

mothers whose nativity is outside the 50 states of the US.

Methods Results

Conclusion

References

Birth Rates for U.S. Teenagers Reach Historic Lows

for All Age and Ethnic Groups

Brady E. Hamilton, Ph.D., and Stephanie J. Ventura, M.A.

NCHS Data Brief No. 89, April 2012

jteji@LurieChildrens.org

Total births

1995 – 2002: Over 31 million

Usable data: Almost 25 million

Teen birth: 3 million (12.3%)

VSS data from the NCHS were used in the analysis.

Years studied: 1995 to 2002

Variables used: Maternal Age

Maternal place of birth

Race

Gestational age

Birth weight

Maternal condition during pregnancy

(Diabetes, hypertension, pregnancy

induced

hypertension)

Maternal exposure to Alcohol and

tobacco.

Other variables :

Prenatal care, plurality, and gender.

Logistical regression was performed with the dependent

variable

birth to teen age mother, TP, with maternal place of birth as

the

independent variable, while rest of variable were tested for

confounding.

Analysis and plots were done using Stata 12.0 and Excel

2010.

1. We accept the hypothesis that teen

pregnancy is lower when the

maternal nativity is outside the US.

2. Reason for higher teen pregnancy

rates when mother’s nativity is from

the US is concerning and needs to

be decreased.

0

2

4

6

8

10

12

14

16

1995 1996 1997 1998 1999 2000 2001 2002 2002

%

Teen births from 1995-2002 for Nativity (US or Non-US)

US

Not US

0.00

2.00

4.00

6.00

8.00

10.00

Relative Risk (RR) for Teen Pregnancy (Maternal Nativity US/Non-US)

RR

Results

0

5

10

15

20

25

30

35

40

45

%

Teen births and Race (1995-2002)

15 years

16 years

17 years

18 years

19 years

0

5

10

15

20

25

30

35

40

45

50

%

Teen Births and Race (1995-2002)

15 years

16 years

17 years

18 years

19 years

0.00

4.00

8.00

12.00

16.00

20.00

Relative Risk (RR) for Teen Pregnancy (Maternal Nativity US/Non-US)

RR