Stephanie J. Ventura, M. A


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  • 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 National Survey of Family Growth

Responds to Sec 306 of the PHS Act:

  • 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.
  • Live births
  • 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
  • Intermediate variables
  • Race/ethnicity
  • Religion
  • Labor force participation
  • Education
  • Income
  • Access to health care
  • Family background
  • Community environment
  • (economic, social, etc)
  • Pregnancy outcome (gestational) variables:
  • Miscarriage and stillbirth
  • Induced abortion
  • Conception variables:
  • Contraceptive use
  • Sterilization
  • Infertility
  • Fertility

NSFG history in brief

  • Cycle
  • Year
  • Scope
  • Number of Interviews
  • Over-Samples
  • Average Length
  • Incentive Payment
  • 1
  • 1973
  • Ever-Married Women 15-44
  • 9,797
  • Black Women
  • 60 Minutes
  • No
  • 2
  • 1976
  • Ever-Married Women 15-44
  • 8,611
  • Black Women
  • 60 Minutes
  • No
  • 3
  • 1982
  • Women 15-44
  • 7,969
  • Black Women Teens
  • 60 Minutes
  • No
  • 4
  • 1988
  • Women 15-44
  • 8,450
  • Black Women
  • 70 Minutes
  • No
  • 5
  • 1995
  • Women 15-44
  • 10,847
  • Black Women Hispanic Women
  • 100 Minutes
  • $20
  • 6
  • 2002
  • Women 15-44
  • Men 15-44 (First time)
  • 12,571
  • W = 7,643
  • M = 4,928
  • Blacks
  • Hispanics
  • Ages 15-24
  • W, 85 Min
  • M, 60 Min
  • $40

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)

Interviewer-Administered:

  • 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.
  • Selected NSFG 2002 Content

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
  • Percent
  • Female
  • Sterilization
  • Pill
  • Injectable
  • (Depo)
  • Calendar Rhythm & NFP
  • 1995
  • 2002
  • Male
  • Condom
  • Male
  • Sterilization
  • Implant, Patch, Lunelle
  • IUD/
  • Diaphram
  • With-drawal
  • Other
  • Women’s contraceptive use at interview by method: US, 1995 & 2002
  • 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.
  • Female Sterilization
  • Pill
  • Percent of women contraceptors 22-44 who were currently using female sterilization or the pill, by education: US, 2002
  • 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

  • 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.

Percentage of births in the five years before the interview that were unintended at conception by respondent’s education1

  • 1 Limited 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.
  • Public assistance in last 12 months
  • Wantedness at time of conception
  • Percent of women who smoked during their most recent pregnancy ending in 1997-2002: US, 2002
  • 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.

Timing of first intercourse and marriage

  • 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

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

  • 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.

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

  • SOURCE: Chandra A. New Data on Breastfeeding. DataSpeak Web Conference, May 11, 2005.
  • Data from NSFG Cycles 5 and 6.
  • Percent
  • Use of Family Planning or Medical Services by Women 15-44 in Past Year: US, 2002
  • 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.

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.

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)

  • 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
  • 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
  • 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.
  • 20
  • 10
  • 9
  • 5
  • 6
  • 3
  • 4

Focus on behaviors in last year

  • Selected NSFG 2002 content: Self-administered section - HIV & STD risk
  • 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
  • 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.
  • 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.
  • Webdoc

Public use files for Cycles 1 thru 6 are available free on CD-ROM: NSFG@cdc.gov

  • 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.

Interviewing began June 2006

  • 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 …
    • 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


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