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Patterns of Age Mixing among American Men and Women. Julie R. Kraut-Becher University of Pennsylvania Sevgi O. Aral Centers for Disease Control and Prevention. Background. Relationship between age mixing and: Early sex initiation Inconsistent condom use Unplanned pregnancy
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Patterns of Age Mixing among American Men and Women Julie R. Kraut-Becher University of Pennsylvania Sevgi O. Aral Centers for Disease Control and Prevention
Background • Relationship between age mixing and: • Early sex initiation • Inconsistent condom use • Unplanned pregnancy • Risk of HIV and other STIs • Existing studies • Women • 1990s and earlier • Gaps in literature • Little is known about trends • Whether they exist among men
Objectives • Assess extent and correlates of age mixing among men and women • Examine trends in age mixing patterns among women
Methods • National Survey of Family Growth (NSFG) • Nationally-representative samples of reproductive-age men & women • 2002 (men and women) • 1995 (women) • NFSG Samples • N = 4,928 males (2002) • Study N = 4,109 males • N = 7,643 Females (2002) • Study N = 6,186 females • N = 10,847 Females (1995) • Study N = 9,272 females • Age difference between partners
Methods • Assess extent of age mixing • Describe patterns of age mixing • Sociodemographic and socioeconomic characteristics • STI history • Nationally representative sample • Sample weights
Limitations • Descriptive • STI reports are self-reported • Composition of questionnaires differ • Between 1995 and 2002 (Women) • Between the male and female surveys in 2002
Conclusions • Summary • Majority of men and women have partners close in age • For those who do not: • Men more likely to have younger (by 3 -5 years) female partners • Women more likely to have older (by 6 or more years) partners • Trends: Women (1995 – 2002) • Women are having older partners • Shift from having partners 3-5 years older to having partners >= 6 years older • Especially adolescent females
Contact Information • Please send any comments or suggestions to: julie6@mail.med.upenn.edu