Dinkelman Taryn, Lam David, Leibbrandt Murray
Department of Economics and Population Studies Center, University of Michigan, Ann Arbor, Michigan, USA.
AIDS. 2007 Nov;21 Suppl 7(Suppl 7):S49-56. doi: 10.1097/01.aids.0000300535.05226.a9.
To describe recent trends in adolescent sexual behavior in Cape Town, South Africa, and to determine whether household and community poverty and negative economic shocks predict risky sexual behavior.
Matched survey data on 2993 African and coloured youth from the Cape Area Panel Study 2002 and 2005.
Sexual debut, multiple sexual partners in past year, condom use at last sex, measured in 2002 and 2005.
We tested for changes over time in reported sexual behavior and estimate multivariate probit models to measure the association between 2002 individual, household and community characteristics and 2005 sexual behavior.
There was a statistically significant increase in condom use and a decrease in the incidence of multiple sexual partners between 2002 and 2005 for young women aged 17-22 years. Young women in households with 10% higher income were 0.53% less likely to debut sexually by 2005; young men in communities with a 10% higher poverty rate were 5% less likely to report condom use at last sex. Negative economic shocks are associated with a 0.04% increase in the probability of multiple partnerships for young women. Education is positively correlated with sexual debut for young women and with multiple partnerships for both sexes.
Trends in sexual behavior between 2002 and 2005 indicate significant shifts towards safer practices. There is little evidence of a relationship between negative economic shocks, household and community poverty, and risky behavior. We hypothesize that the unexpected positive relationship between education and sexual debut may be driven by peer effects in schools with substantial age mixing.
描述南非开普敦青少年性行为的近期趋势,并确定家庭和社区贫困以及负面经济冲击是否能预测危险的性行为。
来自2002年和2005年开普地区小组研究的2993名非洲和有色人种青年的匹配调查数据。
2002年和2005年测量的首次性行为、过去一年中的多个性伴侣、最近一次性行为时使用避孕套的情况。
我们测试了报告的性行为随时间的变化,并估计多变量概率模型以衡量2002年个人、家庭和社区特征与2005年性行为之间的关联。
2002年至2005年期间,17至22岁年轻女性使用避孕套的情况有统计学显著增加,多个性伴侣的发生率有所下降。到2005年,收入高出10%的家庭中的年轻女性首次性行为的可能性降低0.53%;贫困率高出10%的社区中的年轻男性最近一次性行为时报告使用避孕套的可能性降低5%。负面经济冲击与年轻女性多个性伴侣的概率增加0.04%相关。教育与年轻女性的首次性行为以及男女双方的多个性伴侣呈正相关。
2002年至2005年期间的性行为趋势表明向更安全行为有显著转变。几乎没有证据表明负面经济冲击、家庭和社区贫困与危险行为之间存在关联。我们推测教育与首次性行为之间意外的正相关可能是由年龄混合程度较高的学校中的同伴效应驱动的。