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Bill Mosher and Gladys Martinez National Center for Health Statistics Presented August 9, 2007

2. Purposes of the National Survey of Family Growth (NSFG):. Sec 306 of the PHS Act:

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Bill Mosher and Gladys Martinez National Center for Health Statistics Presented August 9, 2007

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    2. 2 Purposes of the National Survey of Family Growth (NSFG): Sec 306 of the PHS Act: “NCHS shall collect statistics on…family formation, growth, & dissolution.” Explaining Birth rates: contraception, sexual activity, infertility Risk of HIV and Sexually Transmitted Diseases: # of sexual partners, condom use, drug use, same-sex contact. Families: Marriage, divorce, cohabitation Roles of fathers in raising children. Attitudes about sex, marriage, parenthood.

    3. 3 Overview Purposes & impact of NSFG Improved website Some findings from Cycle 6: Contraception Unwanted births HIV risk Continuous interviewing

    4. 4 NSFG history: The NSFG has retained its core mission but expanded its coverage over time

    5. 5 The NSFG is a source of data for: 550 published journal articles and NCHS reports (see web site for list) More than 1,000 copies of NSFG data files requested by academic and other researchers. HP 2010 Family Planning Chapter & HIV & STD chapters Title X clinic data Health, United States (annual report to Congress) Statistical Abstract of the United States (annual) National Campaign: Teen pregnancy—and young adult unwanted pregnancy.

    6. 6 Some key points we will present today The NSFG expanded to include men in 2002 and dramatically modernized its content. The survey has an improved web site. More improvements later this year. The 2002 NSFG is the data source for more than 50 published reports so far. We will show you some important findings on contraceptive choice, reasons for non-use of contraception, unintended pregnancy, teen pregnancy, & HIV risk behaviors. Findings: progress, and continued disparities. The NSFG has a new design, which is working well.

    8. 8 New on the NSFG web site: PDF files of all 11 NCHS reports on Cycle 6 (2002) Codebooks for all 6 cycles Questionnaires for all 6 cycles Updated lists of more than 550 publications using NSFG Icon to subscribe to our new listserv. Short Description of continuous interviewing Summary of NSFG’s impact Cycle 6 also has: Downloadable ascii data files Program statements for SAS, STATA, & SPSS Coming soon on the web site: a list of findings, alphabetized by topic.

    9. 9 Example from forthcoming alphabetical list of findings Pill (Oral Contraceptive Pill) Percent of women who have ever used the oral contraceptive pill, 2002: 82.3% (44.6 million) Percent of women who are currently using the pill, 2002: 19.2% (11.8 million). Source: Advance Data No. 350, tables 1 & 11. Current draft includes 83 entries Topics range from “Adoption” to “Wanted Pregnancy.”

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    13. 13 Current contraceptive users by method: US, 1995 and 2002

    14. 14 Women who were not using a birth control method the last time they had an unintended pregnancy: percent giving specified reasons for non-use: US, 2002.

    15. 15 29% of women had ever used the pill and had stopped using it due to dissatisfaction. Reasons for stopping among those who stopped: Other reasons were listed. Women could give more than one reason. Source: Series 23, No. 35, table 66.

    16. 16 Percent of women 22-44 who have ever had an unintended birth, by education: 2002

    17. 17 Wantedness of Births in the last 5 years by education: How much mistimed I changed the title to emphasize the new question on how much mistimed. Can mention that this carries forward the “stratification” findings and showcases the usefulness of the how much mistimed questions.I changed the title to emphasize the new question on how much mistimed. Can mention that this carries forward the “stratification” findings and showcases the usefulness of the how much mistimed questions.

    18. 18 Percent of women 15 to 44 years of age ever treated for PID by whether ever douched in last 12 months, according to Hispanic origin and race, US 2002.

    19. 19 Percentage of women 22-44 who douched at all in the last year, by Hispanic origin and race and education: US, 2002

    20. 20 Is it possible to show total here?Is it possible to show total here?

    21. 21 Cycle 6 collected expanded data on HIV and STD risk These data are continued in Cycle 7. They are collected in the ACASI part of the interview. In 2002, we found that 12%, or more than 14 million men & women 15-44, were at elevated risk of HIV because of their behavior in the last 12 months. Here are the percents at risk for each specific reason, from the report, “Measuring HIV Risk in the US Population aged 15-44: Results from Cycle 6 of the NSFG”:

    22. 22 Percent with selected HIV risk behaviors in the last 12 months: US, 2002

    23. 23 Source of test for HIV for men and women tested in the 12 months before interview, by HIV risk status: US, 2002.

    24. 24 Percent of males 15-44 reporting HIV risk behaviors in the last 12 months: US, 2002

    25. 25 Percent reporting selected HIV risk behaviors in the last 12 months (because of their sexual behavior or drug use): US, 2002

    26. 26 Percentage of women reporting any HIV risk behaviors in the last 12 months by Title X clinic usage and Hispanic origin and race: US, 2002

    27. 27 Update on continuous interviewing: Fieldwork from Year 1

    28. 28 An Update on Continuous interviewing Goals: Collect data more frequently. Reduce cost per case. (Get 20,000 interviews for the price of 12,500) Get data out faster with no compromise in quality. Be more responsive to emerging data needs (e.g. HPV vaccine, new methods of birth control, etc.) Year 1 41 interviewers were trained in June 2006. Began interviewing about July 1, 2006. Target: At least 4,400 interviews. Content similar to Cycle 6.

    29. 29 Results of Year 1 of interviewing 5,500 interviews (3,000 females, 2,500 males) Response rates so far about 75%. (Considered very good these days) Hours of interviewer labor per completed interview: Cycle 6: 11.3 hours per interview Cycle 7: 8.5 hours (25% better!)

    30. 30 Changes in Cycle 7 of interest to OPA - 1 Revised HIV questions was it a rapid test? how soon after the test did you get results? kind of test: swab from mouth, blood from finger, or blood from arm? Source of HIV testing in last 12 months (Title X clinic or not) Revised response choices for post-test counseling New contraceptive methods Added Nuva-Ring & added “Implanon” to brands of implant Fine-tuning to Use of family planning services. Aug 06Aug 06

    31. 31 Changes in Cycle 7 of interest to OPA - 2 Expanded sex education questions: Asked of age 15-24; was it before or after first sex? Questions on HPV vaccine (Gardasil) knowledge, experience* Where obtained Emergency Contraception* ACASI: timing of first oral vs. first vaginal sex.* *=YEAR 2

    32. 32 Year 2 of Continuous interviewing 20 interviewers were trained in Ann Arbor, Michigan June 24-29, 2007. Content of training session similar to Cycle 6 and Year 1. They have already done over 500 more interviews since late June. Exact number of interviews as of aug 10th?Exact number of interviews as of aug 10th?

    33. 33 Changes in how we conduct the NSFG Cycles 1-6 Field period: 12 months Staff size: 250 temporary interviewers Cycle 6 sample size:12,571 1st data release: 20 months after the last interviews (March 2003-Dec 2004) Datasets every 7 years Cycle 7 Field period: continuous (4 yrs) Staff size: 40 interviewers at a time Expected sample in 4 yrs: 17,000 - 20,000 1st data release: 9 months after the last interviews in Dec Datasets every 2-3 years

    34. 34 Delivers: a much larger sample size for the same total cost Data is released more often Over time, continuous trend data This is made possible only with continuous financial support. Somewhere we should add something about the PSU balance only achievable if we interview until [month/year]. This could be made understandable to them by talking about STANDARD ERRORS, the robustness of the statistics and how generalizable the sample is. These things are maximized if the PSU design originally laid out is completely fulfilled.Somewhere we should add something about the PSU balance only achievable if we interview until [month/year]. This could be made understandable to them by talking about STANDARD ERRORS, the robustness of the statistics and how generalizable the sample is. These things are maximized if the PSU design originally laid out is completely fulfilled.

    35. 35 How to contact us Mail: NSFG Team, NCHS, 3311 Toledo Rd, Rm 7318, Hyattsville, MD 20782 E-mail: nsfg@cdc.gov Voice mail: 301-458-4222 NSFG Web site: www.cdc.gov/nchs/nsfg.htm NSFG staff: Joyce Abma, Anjani Chandra, Jo Jones, Gladys Martinez, Brittany McGill, Bill Mosher, Raymond Eldridge, Paula Goodwin

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