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This investigation examines the sociocultural influences on risk of first sex among a representative sample of Hispanic (primarily of Mexican origin) teens living in Los Angeles County. Teen acculturation (measured as language of interview) moderates the effects of gender on risk of sex, with less acculturated teens exhibiting the greatest gender difference. Teens living with both biological parents have significantly lower risk of sex and the effect of family acculturation (measured as generational status) operates through teens' language of interview. Neither measure of parent‐youth relationship (socioemotional support, parental control) is significant. Hispanic teens living in low‐density Hispanic neighborhoods have significantly higher risk of sex than do teens living in neighborhoods with higher levels of ambient hazards. The results highlight the importance of characterizing sociocultural influences at multiple levels of aggregation.  相似文献   
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In this article, we examine the association between the legalization of abortion with the 1973 Roe v. Wade decision and youth homicide in the 1980s and 1990s. An interrupted time series design was used to examine the deaths of all U.S. 15- to 24-year-olds that were classified as homicides according to the International Classification of Diseases (codes E960-969) from 1970 to 1998. The legalization of abortion is associated over a decade later with a gradual reduction in the homicides of White and non-White young men. The effect on the homicides of young women is minimal. We conclude that the 1990s decline in the homicide of young men is statistically associated with the legalization of abortion. Findings are not consistent with several alternative explanations, such as changes in the crack cocaine drug market. It is almost inconceivable that in the United States of today, policies affecting the choice to have children would be justified as a means to control crime. Yet, if the legalization of abortion had this unintended effect, the full range of policy implications needs to be discussed.  相似文献   
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Kusunoki Y  Upchurch DM 《Demography》2011,48(4):1451-1472
We examine the relationship characteristics associated with contraceptive method choice within young people’s nonmarital sexual relationships, using data from retrospective relationship histories available in the third wave (2001–2002) of the National Longitudinal Study of Adolescent Health. Data-reduction techniques produce a detailed multidimensional characterization of relationship commitment for nonmarital sexual relationships. We then use multilevel analysis to estimate associations between two key relationship characteristics—relationship commitment and couple heterogamy—and the type of contraceptive method used at last sexual intercourse within each relationship. Results indicate that for a given individual, contraceptive method choice varies across relationships as a function of these characteristics, even after we account for important individual and family characteristics and prior relationship experiences.  相似文献   
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We examined the effect of negative peer experiences (NPEs; peer victimization and exclusion) on mood (depressed, angry, positive). Seventy‐seven (43 female) fifth graders from elementary schools located in a small town in the Midwest completed a friendship quality measure, in addition to daily reports (seven school days) of mood and peer experiences. Multilevel modeling showed that children who had NPEs in which no one intervened had more negative and less positive mood. For negative mood, this result was attenuated if the child had a friend who was generally helpful. The results demonstrate the positive role of bystanders during NPEs and highlight the protective role of high‐quality friendships.  相似文献   
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Introduction The Aging Male Symptoms' (AMS) scale was designed as a health-related quality of life (QoL) scale and standardized as a self-administered scale, first, to assess symptoms of aging (independent from those which are disease-related) between groups of males under different conditions, second, to evaluate the severity of symptoms/QoL over time, and, third, to measure changes pre- and post-androgen replacement therapy. The scale is in widespread use (17 languages currently available) and a recent review of methodological data documented good psychometric characteristics and ability as a clinical utility. This paper describes test characteristics of the AMS (positive and negative predictive values), taking two internationally established and published screening scales for androgen deficiency as the available standard.

Method A sample of 150 German males aged 40–69 years completed the AMS scale and two screening scales for androgen deficiency: the ADAM scale of Morley and colleagues and the screener of Smith and colleagues. The technique of a computer-assisted telephone interview was applied.

Result The comparison of the AMS with the two screening instruments for androgen deficiency showed sufficiently good compatibility despite conceptual differences. The AMS scale sufficiently predicted the results of the two screening instruments. A positive predictive value of 92% and a negative predictive value of 50% were found regarding the ADAM scale. The respective figures regarding Smith's screener were 65% and 49% for positive and negative predictive values, respectively.

Conclusion The AMS scale obviously measures a similar phenomenon as the two established and widely used screeners for androgen deficiency, although it was not developed as a screening instrument.  相似文献   
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Two types of reporting inconsistency for sexual initiation were analyzed—event occurrence and its timing—using data from two waves of the National Longitudinal Study of Adolescent Health (Add Health). Overall, 11.1% of those who reported they were sexually active at the time of first interview denied this at the subsequent one. Males of each race/ethnic group had higher percentages of inconsistency than their female counterparts. Being older, not living with parents, or having a highly educated mother was negatively associated with rescinding. Among those reporting sexual experience at both interviews, only 22.2% reported the same date of first sex. On average, teens revised their age at first sex to older ages, and boys, especially African American boys, had large variability in reporting dates, as did teens with lower verbal ability. Seven strategies for resolving inconsistent reports are presented and implications for substantive findings are discussed.  相似文献   
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