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IMPROVING SURVEYS of SEXUAL BEHAVIOR USA National STD and Behavior Measurement Experiment (NSBME)

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Presentation on theme: "IMPROVING SURVEYS of SEXUAL BEHAVIOR USA National STD and Behavior Measurement Experiment (NSBME)"— Presentation transcript:

1 IMPROVING SURVEYS of SEXUAL BEHAVIOR USA National STD and Behavior Measurement Experiment (NSBME)

2 Charles Turner Alia Al-Tayyib Susan Rogers Maria Villarroel Anthony Roman James Chromy Phillip Cooley Funded by NIMH and NICHD (R01-MH56319 & R01-HD31067)

3 OBJECTIVE Importance of Self-Report Importance of Self-Report Final Installment of NSBME Final Installment of NSBME “PIs know best” “PIs know best”

4 SELF-REPORT Almost everything we know about sexual behaviors Almost everything we know about sexual behaviors Population SurveysPopulation Surveys Evaluation of InterventionsEvaluation of Interventions Clinical MedicineClinical Medicine Privacy, SAQs, and, Audio-CASIPrivacy, SAQs, and, Audio-CASI

5 Developed by Phil Cooley in Developed by Phil Cooley in Human interviewers recruit respondents and introduce survey Human interviewers recruit respondents and introduce survey Computer-recorded questions played and respondents used telephone keypad to respond Computer-recorded questions played and respondents used telephone keypad to respond First demonstration of impact of T-ACASI: First demonstration of impact of T-ACASI: 1996 ASC meetings 1996 ASC meetings

6 T-ACASI Advantages Entirely private administration Entirely private administration Completely standardized – everyone hears exactly same question wording, intonation Completely standardized – everyone hears exactly same question wording, intonation Eases multilingual interviewing Eases multilingual interviewing

7 NSBME: National STD and Behavior Measurement Experiment Two probability samples of English speaking adults ages living in households with telephones –National stratum, N=1,543 –Baltimore stratum, N=744 Telephone numbers randomly assigned to T-IAQ or T-ACASI condition

8 NSBME FINDINGS TO DATE Increased illicit but not licit drug use Addictions, 2004 Increased same-gender sex --- particularly in gay-unfriendly regions Public Opinion Quarterly, 2006 Increased reporting of STD history STDs, 2008 Increased reporting of unpopular social attitudes Public Opinion Quarterly, 2009

9 Heterosexual Sex Forthcoming International Journal of Epidemiology Summer / Fall, 2009

10 No Sexual Experience OR= 2.1, P = 0.001

11 No Main Sex Partner in Past Year OR= 1.9, P = 0.001

12 New Sex Partners, 12 months p < 0.001

13 Extra-Relationship Sex during Committed Relationship OR= 1.6, p =.001

14 Never Oral Sex OR= 0.5, p < 0.001

15 Ever Heterosexual Anal Sex OR= 1.7, p < 0.001

16 Never Sex while Menstruating OR= 0.7, p < 0.001

17 Used Condom Every Time Past Year OR = 0.5, p < 0.001

18 Difficulty having Satisfying Sex OR = 1.4, p = 0.011OR = 1.3, p = 0.097

19 “PIs Know Best”

20 “Very Easy” to become Sexually Aroused OR = 1.8 p < OR = 2.8 p < OR = 1.5 p = 0.003

21 Always Asked or Told about Past Sex Partners OR = 1.4, p = 0.058OR = 1.5, p = 0.028

22 CONCLUSION T-ACASI Reduces Self-Report Bias What People Do vs. What People Say They Do Lessons in Fallibility of PI Assumptions


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