未婚流产少女男伴首次性行为的年龄及其影响因素

目的:了解北京和济南两地未婚流产少女男伴首次性行为的年龄及其影响因素。方法:采用自编结构式问卷对北京和济南两地共467名未婚流产少女的男性伴侣进行调查。结果:未婚流产少女的男性伴侣首次发生性行为的平均年龄为(20.25±2.72)岁,首次性行为的前两位原因依次为"好奇,想知道性交感受"(43.0%),"生理需要"(32.3%)。单因素分析结果表明,首次性行为年龄(≤18岁组和>18岁组)与性态度、首次接触描写性行为的书刊/录像/网站的年龄、被迫性行为、紧急避孕、吸烟、饮酒、暴力冲突等13个因素有关(P<0.05)。多元因素分析结果提示,接触描写性行为书刊/录像/网站的年龄过早和过去1年与家人发生冲突的次数多是过早发生性行为的危险因素。结论:未婚流产少女男伴首次性行为的年龄较早,过早发生性行为的男伴健康危险行为和不安全性行为的发生率较高。     

Childhood precursors of age at first intercourse for females

Age at first intercourse for a sample of adult white women using variables measured during childhood is predicted. Childhood predictors were measured at birth, and ages 5 and 9–11, using existing public-use data on the women. Median age at first intercourse for the sample was 17.5 years. Early family predictors, early developmental characteristics, and temperamental characteristics during childhood together could predict about a fourth of the variance in age at first intercourse. The strongest predictors were motor skills and nightmares at age 5, church attendance with family at age 9, and domineering and mature personality at age 9.This research was supported by grants R01-HD23454 and P30-HD05798 from the National Institute of Child Health and Human Development. An earlier version of this paper was presented at the annual meetings of the Population Association of America, Denver, Colorado, April 30–May 2, 1992.     

Differences between males and females in motives for engaging in sexual intercourse

In a test of the hypothesis that a difference exists between males and females in motives for participating in sexual intercourse, a random sample of 249 college students was given a questionnaire containing questions about sexual behavior and attitudes, focusing on motives for having intercourse. There were significant differences between males and females in approval of casual sexual intercourse, number of premarital sexual partners, most important part of sexual behavior, and whether an emotional involvement was a prerequisite for participating in sexual intercourse. Effect-size analyses indicated that these differences are large, with a median ² = 0.24. Both males and females approved of premarital sexual intercourse in a serious relationship and stressed the importance of feeling loved and needed. However, males found it easier to participate in sexual intercourse without an emotional commitment, whereas females were unlikely to want intercourse for physical pleasure in the absence of psychological involvement.     

The experience of pain during women's first sexual intercourse: Cultural mythology about female sexual initiation

A sample of coitally experienced college females was utilized to explore the adequacy of several related beliefs that constitute the cultural mythology of female sexual initiation in American society and to identify possible correlates of the subjective experience of pain during women's first intercourse. The results were that a sizeable minority of the women reported experiencing no pain during their first intercourse, that other subjective reactions (pleasure, guilt, anxiety) were experienced at least as commonly as pain, and that many women acquired considerable noncoital sexual experience prior to their first intercourse. The experience of pain during first intercourse was found to be related directly to young age, conservative sexual values, an expectation of no pain, and negative affect. The report closes with a consideration of future research needs and the presentation of a tentative model of first coital pain in which noncoital sexual experience and qualities attributed to the male partner are projected as indirect influences on first coital pain.     

Positive and negative perceived consequences of first intercourse among middle and high school students in Puebla,Mexico

Relatively little is known about young people’s interpretations of sexual behaviour in Latin America. In this study, we examine the most commonly perceived consequences of first sexual intercourse among Mexican middle and high school students, how perceived consequences differ by gender, and factors that may predict experiencing more positive or negative consequences. Sexually active Mexican students aged 12–19 years (n = 268) reported whether they had experienced each of 19 consequences following first intercourse. Both positive consequences, such as physical satisfaction and closeness to partner, and negative consequences, such as worry about STDs and pregnancy, were common. Sex with a non-relationship partner was associated with fewer positive and more negative consequences, with the effect for positive consequences being stronger for young women. Pressure to have sex was associated with fewer positive consequences of first intercourse, and pressure to remain a virgin was associated with more positive and negative consequences. These findings suggest that young people often report mixed feelings about their first sexual intercourse and that relationship context and sexual socialisation influence their perceptions of the event.     

Determinants for non-use of contraception at first intercourse; a study of 10841 young Danish women from the general population

Based on interview data from 10841 Danish women aged 20 to 29 years, determinants for non-use of contraception at first intercourse (NU) were studied. One-fourth of the women (n = 2704) reported NU, whereas condoms and oral contraceptives were used by, respectively, 59% and 15%. NU decreased with the birth year of the first male partner (OR = 3.6; 95% CI: 2.8-4.8 for or=17 years) at the expense of both oral contraception and condom use. Finally, NU was found to predict high-risk sexual behavior in terms of subsequent multiple sex partners, non-use of condoms, and induced abortion.     

Personal and Social Factors Influencing Age at First Sexual Intercourse

Early initiation of sexual activity is aconcern, in part because of increased risk of sexuallytransmitted diseases, including HIV, and unwantedpregnancies among young people. In this study, 241 high schoolers were administered a questionnaire toestablish the relationships between age at first sexualintercourse and personal qualities (sexual style,attractiveness, physical maturity, restraint, autonomy expectations, and attitudes to gender roles),smoking and drug use, and aspects of the social context(social activities, media impact, peer norms). Therewere few effects of sex of respondent and none in which respondents' sex impacted on age ofinitiation. Overall (and among the male sample),perceptions of greater physical maturity, greater use ofuncommon (mostly illicit) drugs, and expectations of earlier autonomy significantly differentiatedbetween early and later initiators. This group offactors tends to confirm the view that early experienceof sexual intercourse is correlated with problembehaviors and a press toward adultbehaviors. For girls, this pattern was even clearer,with use of uncommon drugs being replaced as asignificant contributor to early sexual experience byrelative lack of restraint. We conclude that the desire to achieve thetransition to adulthood at an earlier age than theirpeers constitutes a powerful incentive for young peopleto become sexually active.     

A Statewide Survey of Age at First Intercourse for Adolescent Females and Age of Their Male Partners: Relation to Other Risk Behaviors and Statutory Rape Implications

In a statewide survey of a representative sample of adolescent girls in 8th–12th grades (N = 4201), information was obtained on age at first intercourse and age of their male partners. Excluding intercourse experiences where physical force was threatened or used, 31% had intercourse by age 15 and 45% by age 16. Contrary to the impression left by studies of teenage mothers, girls who first had sex between age 13 and age 15 or between age 16 and age 18 did not have a large percentage of much older partners (5 or more years older; 12 and 7%, respectively). The percentage of much older partners was higher, however, for girls who had sex in very early adolescence, ages 11–12 (34%). Much older male partners were associated with greater problem behaviors for girls who first had intercourse in very early adolescence (11–12), but less so for those who first had intercourse between age 13 and age 15 (truancy only) and not at all for those who first had intercourse at between 16 and 18. Regardless of partner's age disparity, earlier age at first intercourse during adolescence was associated with a greater number of other problem behaviors. The implications of these findings for recent calls to enforce statutory rape laws more stringently to reduce teenage pregnancy were discussed.     

广东省高中和大学生强迫性交经历与健康危险行为的关系研究

目的分析广东省高中及大学生强迫性交的发生情况以及其与健康危险行为发生的关系,为制订干预计划和措施提供依据。方法采用多阶段整群抽样的方法随机抽取广东3个大城市、5个中小城市、13个县／区共21个监测点,每个监测点随机抽取重点高中、普通高中、中专／职业技术学校各1所;另外,城市监测点增加l所大学,每所学校各年级随机抽取1～2个班整群参加调查。调查采用统一设计的问卷,收集被调查者个人及家庭基本情况、个人性行为情况以及其他健康危险行为情况。采用PearsonХ^2检验及多因素logistic回归分析强迫性交与健康危险行为发生的关系。结果该次调查共回收有效问卷15173份,调查对象中男生7375人、女生7798人,强迫性交发生总人数为314人,强迫性交总发生率为2．1％,男、女生强迫性交发生率分别为2．9％、1．3％,男生高于女生（P〈0．01）;按学习阶段分析,高中生、大学生的强迫性交的发生率分别为2．1％、1．9％（P〉0．05）。多因素logistic回归分析结果显示,无论男、女,与未发生过强迫性交者相比,发生过强迫性交者更有可能发生以下行为：过去30d吸烟日子里每天吸烟超过5支（OR男=2．59,OR女=3．42）、过去7d网络成瘾（OR男=1．60,OR女=2．04）以及过去12个月曾自杀（OR男=2．08,OR女=3．42）。另外,分析结果发现男生发生过强迫性交者更有可能发生过去30d曾经重度饮酒（OR男=1．75）、过去12个月参与过打架及曾做过自杀计划（OR男分别为1．83、4．18）以及过去7d玩游戏机成瘾（OR男=1．67）;而女生发生过强迫性交者更有可能发生过去12个月内至少曾经1次醉酒（OR＋=2．18）以及物质滥用行为（OR女=3．13）。结论强迫性交经历与伤害、物质及精神成瘾行为的发生有关。发生过强迫性交的青少年是这些健康危险行为发生的高危人群,应该及早开展行为和心理干预,防止健康危险行为发生。     

Changes in the frequency of marital intercourse from panel data

Three waves of panel data from a sample of urban U.S. couples in which the wife was under 30 years of age at the first interview show that frequency of intercourse declined about 25% in a 4-year period. Declines were greatest among those with the shortest length of marriage.The data for the analysis were collected under a grant from the Center for Population Research, NICHD, Grant N01-HD-42804.     

Age at first experience of intercourse among Norwegian adolescents: a lifestyle perspective

Age at first intercourse among Norwegian adolescents was studied by means of survival analysis. The data stemmed from a nation-wide survey of 3000 Norwegian adolescents aged 17-19, yielding a response rate of 61.8%. Median age at first intercourse was 17.3 years among girls and 18.0 years among boys. By means of Cox regression analysis associations between age at onset of intercourse and some correlates were estimated. Age at first intercourse was significantly associated with educational aspirations, smoking behaviour, alcohol consumption, peer affiliation, and frequency of visiting a discotheque. These inter-relationships confirm that age at onset of intercourse comprise an important indicator of the lifestyle of an individual. In order to influence sexual behaviour of adolescents it may thus be appropriate to employ health promotion activities focusing upon environmental and structural factors, as a supplement to traditional methods of sex education.     

Age and sexual culture among homosexually oriented males

It is here argued that the thesis has been overgeneralized that the culture of homosexually oriented males is heavily youth oriented. It is suggested that any youth orientedness is due to their largely single marital status rather than to sexual orientation. Utilizing data from 243 males from the Detroit area, several qualifications to the thesis of youth orientedness are indicated. It was found that a majority of males aged 18–24 prefer a male partner who is older, a majority of those aged 25–34 years prefer a same-age person, and 50% of those over 35 prefer a younger partner. These relationships were found to be especially strong among those segments of the sample who attend gay bars infrequently or who are of lower occupational levels. Also, higher occupational status was found to be associated with preference for the younger, independent of age. It is suggested that, because of the heterogeneity of the male homosexual community, the degree of emphasis of youth will be found to vary with social setting.This is a revision of a paper presented at the meetings of the Society for the Study of Social Problems, New York, New York, 1976.     

女大学生首次性行为非意愿性分析

目的了解女大学生首次性行为非意愿性状况及影响因素。方法采用分层整群抽样方法抽取湖北省武汉市在校女大学生5 076人,以匿名自填方式进行问卷调查。结果女大学生有性行为(性交)者占18.10%;19.81%的女大学生首次性行为是迫于感情压力,4.29%是迫于暴力;首次性行为年龄≤18岁的学生中24.72%由于迫于感情压力,而首次性行为年龄18岁的学生中迫于感情压力的占18.43%,二者差异有统计学意义(2χ=4.402,P=0.036);医科或艺术专业(OR=2.381,OR=1.633)、父亲是农民或科技人员及教师(OR=2.577,OR=2.087)、读大学感到迷茫或抑郁(OR=1.565,OR=1.516)、反对婚前性行为(OR=1.886)的学生首次性行为非意愿性均较高;有宗教信仰(OR=0.628)、父母对恋爱和性的态度既不保守也不开放(OR=0.629)的学生非意愿性相对较低。结论女大学生首次性行为有非意愿性情况存在,并受多种因素影响。     

Reported heterosexual intercourse and related behaviours among primary school pupils in Kinondoni district,Dar es Salaam,Tanzania

A cross-sectional questionnaire survey was conducted among 2820 pupils in 22 randomly selected primary schools in Kinondoni district, Tanzania. The objective was to identify the proportion of pupils who reported ever having had sexual intercourse, as well as sociodemographic and psychosocial factors and other sexual-related behaviours associated with heterosexual intercourse among pupils. About 13% (376) of participating pupils reported having had heterosexual intercourse. The proportion of pupils who reported doing so varied significantly by age, sex, school grade and parents' education. Regarding psychosocial factors, pupils who agreed that having sexual intercourse implies love for a partner and that sexual intercourse creates peer approval were significantly more likely to report having had heterosexual intercourse. Pupils who reported having a girl/boy friend, kissed a boy/girl, engaged in light petting, engaged in heavy petting or practised oral sex and anal sex were more likely to report ever having heterosexual intercourse. The implications for programme and intervention development are discussed.     

重庆地区男男性行为人群多性伴行为特征及影响因素

目的  了解重庆地区艾滋病病毒(human immunodeficiency virus, HIV)阴性多性伴肛交(≥5人)男男性行为者(men who have sex with men, MSM)的人口学和性行为特征及其影响因素。 方法  从2018年6月至2019年6月, 招募重庆地区319名HIV阴性MSM, 收集其人口学特征、近半年内安全套使用率、是否感染性病、性角色、药物滥用史、是否服用过暴露后预防(post-exposure prophylaxis, PEP)药物、是否关注HIV知识和是否服用过暴露前预防(pre-exposure prophylaxis, PrEP)药物等信息。采用单因素和多因素Logistic回归分析模型分析MSM人群多性伴肛交的影响因素。 结果  319名HIV阴性MSM中, 34.5%(110/319)近6个月内性伴人数≥5人; 110名多性伴MSM中, 63.6%(70/110)年龄≤28岁, 75.4%(83/110)学历为大学本科或大专; 50名报告情感状况的MSM中, 72.0%(36/50)为单身。多因素Logistic回归分析模型分析显示, 服用过PEP药物和经常关注HIV知识是MSM多性伴肛交的主要影响因素。 结论  重庆地区HIV阴性MSM人群普遍存在多性伴肛交现象。应加大对MSM人群, 尤其是低龄MSM人群, HIV防治知识的宣教力度。在推广PrEP和PEP在MSM人群中的使用时, 应警惕其相关风险补偿。     

Alexithymia is inversely associated with women's frequency of vaginal intercourse

The study examined the relation between frequency of penile–vaginal intercourse (FSI; contrasted with other sexual behavior) and alexithymia (difficulty recognizing, identifying, and communicating emotions, reduced fantasy capacity, and an externally oriented cognitive style). To minimize response bias, persons scoring above the 86th percentile on the Eysenck Personality Inventory Lie scale were excluded. Participants (54 female and 39 male healthy young adults) completed the German version of the Toronto Alexithymia Scale (TAS-20), and provided both recall and diary measures of FSI, partner sex without vaginal intercourse, and masturbation. For women, TAS-20 scores were inversely associated with both recall and diary measures of FSI but not other sexual behavior. For men, TAS-20 scores were unrelated to all sexual behavior measures. Thus, for normal women but not men, alexithymia was specifically associated with lower FSI. Results are discussed in terms of the unique nature of penile–vaginal intercourse, emotional integration and sexuality, and both less alexithymia and greater FSI being associated with indices of better physical and psychological health.