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The National Survey of Family Growth. Stephanie J. Ventura, M.A. National Center for Health Statistics Presented at the 134th Annual Meeting & Exposition of the American Public Health Association Continuing Education Institutes November 4, 2006 Boston, MA. The NSFG’s Role.

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slide1

The National Survey of Family Growth

Stephanie J. Ventura, M.A.

National Center for Health Statistics

Presented at the 134th Annual Meeting & Exposition of the American Public Health AssociationContinuing Education Institutes

November 4, 2006Boston, MA

the nsfg s role
The NSFG’s Role
  • Responds to Sec 306 of the PHS Act:
    • “NCHS...shall collect statistics on family formation, growth, and dissolution.”
  • Extends the birth registration system by providing data on behaviors that explain birth and pregnancy rates---

e.g. sexual activity, contraception, infertility, & breastfeeding.

  • Serves the needs of other DHHS programs
    • NICHD, OPA, OASPE, ACF’s OPRE & Children’s Bureau
    • CDC’s DRH; HIV Prevention Program (DHAP); & OWH.
slide3

Fertility

Intermediate variables

Social factors

Intercourse variables:

Timing of first intercourse

Percent of women who ever had

intercourse

Time spent in marriage

(separation, divorce, cohabitation)

Frequency of intercourse

Race/ethnicity

Religion

Labor force participation

Education

Income

Access to health care

Family background

Community environment

(economic, social, etc)

Conception variables:

Contraceptive use

Sterilization

Infertility

Pregnancy outcome (gestational) variables:

Miscarriage and stillbirth

Induced abortion

Live births

2002 nsfg data collection
2002 NSFG data collection
  • Contractor: Institute for Social Research (ISR), University of Michigan
  • National sample in 121 areas
  • Blacks, Hispanics, teens over-sampled
  • In-person interviews using laptop computers
  • Interviews in both English and Spanish (929 in Spanish)
selected nsfg 2002 content
Selected NSFG 2002 Content

Interviewer-Administered:

  • Pregnancy history (women); fatherhood history (men);
  • Marriage & cohabitation history,* sexual partner history
  • Contraceptive history;* Wanted & unwanted births*
  • Attitudes about marriage, parenthood, children

Self-administered:

  • Sexual behavior, sexual orientation and attraction,

drug use, forced sex, income.

*more detailed for women than for men.

first example contraceptive use measures in the nsfg
First example: Contraceptive use Measures in the NSFG
  • Females
    • “Have you ever used...?” (19 methods).
    • Method used at first and last sex
    • Current contraceptive use (up to 4 methods)
    • What methods she and her partner(s) used in each month over the past 3 years (including use in the month of interview)
  • Males
    • Contraceptive use asked about within relationships and marriages
    • Contraceptive use asked about for first & last intercourse with each of up to 3 “most recent partners”
    • Consistency of condom use past 4 weeks & last 12 months
women s contraceptive use at interview by method us 1995 2002
Women’s contraceptive use at interview by method: US, 1995 & 2002

Percent

2002

1995

Implant, Patch, Lunelle

Calendar Rhythm & NFP

Female

Sterilization

Male

Sterilization

Pill

Injectable

(Depo)

Male

Condom

With-drawal

Other

IUD/

Diaphram

SOURCE: Mosher WD, Martinez GM, Chandra A, Abma JC, Willson SJ. Use of Contraception and Use of Family Planning Services in the United State: 1982-2002. Dec 2004. National Center for Health Statistics. Advance Data 350.

slide9
Percent of women contraceptors 22-44 who were currently using female sterilization or the pill, by education: US, 2002

Female Sterilization

Pill

SOURCE: Mosher WD, Martinez GM, Chandra A, Abma JC, Willson SJ. Use of Contraception and Use of Family Planning Services in the United State: 1982-2002. Dec 2004. National Center for Health Statistics. Advance Data 350.

second example wantedness of pregnancies the traditional concepts
Second example: Wantedness of pregnancies The traditional concepts
  • Intended/wanted:Respondent wanted to get pregnant/ Respondent wanted his spouse or partner to get pregnant at about or before the time it happened
  • Unintended: Unwanted + Mistimed
    • Unwanted:Respondent did not want to have a baby of that birth order, ever.
    • Mistimed:Respondent wanted a baby, but not when it happened.
slide11
Percentage of births in the five years before the interview that were unintended at conception by respondent’s education1

1Limited to births to respondents 22-44 years of age

SOURCES: Chandra A, Martinez GM, Mosher WD, Abma JC, Jones J. Fertility, Family Planning, and Reproductive Health of U.S. Women: Data from the 2002 National Survey of Family Growth. Vital and Health Statistics. Series 23, No. 25. Hyattsville, MD: National Center for Health Statistics. 2005. Martinez GM, Chandra A, Abma JC, Jones J, and Mosher WD. Fertility, Contraception, and Fatherhood: Data on Men and Women from Cycle 6 (2002) of the National Survey of Family Growth. Vital and Health Statistics. Series 23, No. 26. Hyattsville, MD: National Center for Health Statistics. 2006.

percent of women who smoked during their most recent pregnancy ending in 1997 2002 us 2002
Percent of women who smoked during their most recent pregnancy ending in 1997-2002: US, 2002

Public assistance in last 12 months

Wantedness at time of conception

SOURCE: Chandra A, Martinez GM, Mosher WD, Abma JC, Jones J. Fertility, Family Planning, and Reproductive Health of U.S. Women: Data from the 2002 National Survey of Family Growth. Vital and Health Statistics. Series 23, No. 25. Hyattsville, MD: National Center for Health Statistics. 2005.

more examples of data analysis
More examples of data analysis
  • Timing of first intercourse and marriage
  • Mother’s marital and cohabiting status at birth of child
  • Tobacco use
  • Breastfeeding, initiation and after select durations
  • Use of family planning services
  • Number of children fathered & total number expected
  • Attitude towards nonmarital childbearing
slide14

Percentage of men and women 15-44 years of age who agree or strongly agree with the statement, “It is all right for unmarried 18 year olds / 16 year olds to have sexual relations if they have strong affection for each other”: US, 2002

SOURCE: Martinez GM, Chandra A, Abma JC, Jones J, and Mosher WD. Fertility, Contraception, and Fatherhood:

Data on Men and Women from Cycle 6 (2002) of the National Survey of Family Growth. Vital and Health Statistics.

Series 23, No. 26. Hyattsville, MD: National Center for Health Statistics. 2006.

percentage of never married 15 19 year olds who were sexually experienced by age us 1995 and 2002
Percentage of never married 15-19 year olds who were sexually experienced, by age: US, 1995 and 2002

Females

Males

SOURCE: Abma JC, Martinez GM, Mosher WD, and Dawson BS. Teenagers in the United States: SexualActivity, Contraceptive Use, and Childbearing, 2002. Vital and Health Statistics. Series 23, No. 24. Hyattsville, MD: National Center for Health Statistics. 2004.

slide16

Percent distribution of parents' marital or cohabiting status at the time their first child was born, by Hispanic origin and race: United States, 2002

Note: Based on independent samples of men and women 15-44 years of age.

Source: Martinez, GM, Chandra, A, Abma, JC, Jones, J, and Mosher WD Fertility, Contraception, and Fatherhood: Data on Men and Women from the 2002 National Survey of Family Growth. National Center for Health Statistics. Vital Health Stat 23(26). 2006.

percent of babies breastfed at all single births 1990 93 and 1997 2000
Percent of babies breastfed at all: single births 1990-93 and 1997-2000

SOURCE: Chandra A. New Data on Breastfeeding. DataSpeak Web Conference, May 11, 2005.

Data from NSFG Cycles 5 and 6.

slide18

Use of Family Planning or Medical Services by Women 15-44 in Past Year: US, 2002

Percent

SOURCE: Chandra A, Martinez GM,Mosher, WD Abma JC, Jones, J. Fertility, Family Planning, and Reproductive Health of U.S. Women: Data from the 2002 National Survey of Family Growth. Vital & Health Statistics. Series 23, Number 25. Dec 2005. Hyattsville, MD: National Center for Health Statistics.

slide19

Percentage of men 15-44 years of age whose first child was born before they were 20 years old, by Hispanic origin and race: United States, 2002

SOURCE: Martinez GM, Chandra A, Abma JC, Jones J, Mosher WD. Fertility, Contraception, and Fatherhood: Data on Men and Women from Cycle 6 (2002) of the 2002 National Survey of Family Growth. Vital and Health Statistics. Series 23, Number 26. Hyattsville, MD: National Center for Health Statistics. 2006.

slide20

Percentage of fathers 15-44 years of age who did the specified activity several times a week or more in the last 4 weeks with their children under 5 years old, by whether or not they lived with their children: US, 2002

SOURCE: Martinez GM, Chandra A, Abma JC, Jones J, Mosher WD. Fertility, Contraception, and Fatherhood:

Data on Men and Women from Cycle 6 (2002) of the National Survey of Family Growth. Vital and Health Statistics.

Series 23, Number 26. Hyattsville, MD: National Center for Health Statistics. 2006.

selected nsfg 2002 content data collected in self administered section acasi
Selected NSFG 2002 content:Data collected in self-administered section (ACASI)
  • Height and weight
  • Alcohol, tobacco & drug use in last 12 months
  • Non-voluntary sex (18-44 only)
  • Sexual orientation and attraction
  • STIs – ever diagnosed or treated in the last 12 months
  • Pregnancies had (women) or fathered (men)
  • Types of sexual contact
slide22
Percent of males and females 25-44 years of age reporting each type of sexual contact, as reported in ACASI: US, 2002

SOURCE: Mosher, WD, A Chandra, & J Jones.Sexual Behavior and Selected Health Measures: Men and Women 15-44 Years of Age: United States, 2002. Sep 2005. Hyattsville, MD: National Center for Health Statistics Advance Data Number 362.

percent of sexually experienced women 18 44 years of age whose first intercourse was not voluntary
Percent of sexually experienced women 18-44 years of age whose first intercourse was not voluntary

20

10

9

6

5

4

3

SOURCE: Chandra A, Martinez GM,Mosher, WD Abma JC, Jones, J. Fertility, Family Planning, and Reproductive Health of U.S. Women: Data from the 2002 National Survey of Family Growth. Vital & Health Statistics Series 23, Number 25. Dec 2005. Hyattsville, MD: National Center for Health Statistics.

selected nsfg 2002 content self administered section hiv std risk
Selected NSFG 2002 content:Self-administered section - HIV & STDrisk

Focus on behaviors in last year

  • Drug-related risk:
    • Injection of non-prescription drugs
    • Use of illicit drugs
  • Sex-related risk:
    • If male: sexual contact with other males;If female: sex with men who have had sex with men
    • Sex with an HIV-positive partner
    • Sex with an IV drug user
    • Number of sexual partners in last year
    • Exchange of sex for drugs or money
    • Testing or treatment for sexually transmitted infection
percent tested for hiv in last year by number of opposite sex partners in the last year us 2002
Percent tested for HIV in last year by number of opposite-sex partners in the last year: US, 2002

SOURCE: Anderson JE, A Chandra, & WD Mosher. HIV Testing in the United States. Nov 2005. Hyattsville, MD: National Center for Health Statistics, Advance Data Number 363.

slide26

Percent of men and women 20-44 years of age who are at increased risk of HIV due to their recent sexual or drug use behavior or as indicated by recent STD treatment, by poverty status: United States, 2002

Source: Anderson JE, Mosher WM, and Chandra A. (2006) Measuring HIV Risk in the US Population aged 15-44: Results from Cycle 6 of the National Survey of Family Growth. Advance Data from Vital and Health Statistics, No. 377, October 2006. Hyattsville, MD: National Center for Health Statistics.

available nsfg data files
Available NSFG data files
  • Public use files for Cycles 1 thru 6 are available free on CD-ROM: NSFG@cdc.gov
  • ACASI data files—which contain the sexual behavior data—are available on request. Application is on the web site. The file is free.
  • Contextual data file can be used thru NCHS Research Data Center. 1,000 variables at state, county, tract, block group are available. For a complete listing, see the NSFG web page.
    • You can also add your own variables.
cycle 7 start of continuous interviewing for nsfg
Cycle 7 – start of continuous interviewing for NSFG
  • Interviewing began June 2006
  • Expected 4400 interviews per year
  • Why continuous interviewing?
    • More timely and cost effective ability to

supply data on:

      • HPV vaccine
      • New contraceptive methods on the market
      • Emergency contraception (ever, last 12 months, provider)
      • Assessing populations at risk for HIV/STD and Unintended pregnancy
how to contact us
How to contact us …

nsfg@cdc.gov

301-458-4222 (leave message)

National Survey of Family Growth

National Center for Health Statistics

3311 Toledo Road, Room 7318

Hyattsville, MD. 20782

NSFG team

Joyce Abma, PhD Anjani Chandra, PhD

Jo Jones, PhD Gladys Martinez, PhD

Brittany McGill, MPP Bill Mosher, PhD