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PubMed2005

Why lightning strikes twice: postpartum resumption of sexual activity during adolescence.

PURPOSE: To describe the circumstances surrounding the postpartum resumption of sexual activity in a cohort of teenage mothers. The goal was to shed new light on the reasons why teenagers who have just given birth put themselves at risk for conception. METHODS: A racially and ethnically diverse group of 267 poor, predominantly unmarried, primiparous, 13-21 year olds was enrolled consecutively at delivery and followed through the third postpartum month. The primary outcome measure was weeks postpartum at resumption of sexual activity, further categorized as protected or unprotected. The analysis controlled for factors thought to influence the postpartum resumption of sexual activity among adult couples and the use of contraception during adolescence. The Kaplan-Meier method was used to estimate the time to end point and Cox proportional-hazards regression analysis to compute relevant relative risks (RR). RESULTS: By the end of the third postpartum month, 58% of the teenagers had had sexual intercourse and the majority (80%) used contraception when they did so. The median time to first coitus, 10.7 weeks, was unrelated to contraceptive use but was significantly shorter among teenagers who lived with their boyfriends (RR: 2.4; 95%CI: 1.7-3.4) and those who delivered prior to term (RR: 2.1; 95%CI: 1.3-3.6). The analysis revealed that the teenagers who did not use contraception at first postpartum sexual intercourse exhibited more theorized risk factors for conception than those who did and those who remained sexually abstinent. CONCLUSIONS: This new empirical evidence that coital activity resumes soon after delivery should dispel the normative belief that contraception is unnecessary during the puerperium. Early contraceptive vigilence may also decrease the frequency and rapidity with which teen mothers conceive, as the differences in the prevalence of teen pregnancy risk factors we uncovered suggest that decisions about using contraception (not sexual intercourse) determine the risk of rapid repeat conception. Teens with live-in boyfriends and premature babies are especially apt to benefit from the new information in this report as they resume sexual activity sooner than their peers and are less apt to use contraception when they do so.

Adolescent↗
PubMedDate not supplied

When and why do young people in the United Kingdom first use sexual health services?

CONTEXT: Many young people think about and take steps to obtain adequate protection only after having sexual intercourse for the first time. Consequently, they are at increased risk of unintended pregnancy and sexually transmitted infections. METHODS: Between June and August 1999, a self-administered questionnaire was distributed to attendees at UK youth-targeted sexual health services to investigate when and why they first use a sexual health service, reasons for delaying use, and sexual behavior and contraceptive practice before first use. RESULTS: Of the 747 respondents, 29% had used a sexual health service before ever having sex, most commonly "to be prepared." In contrast, 61% of respondents had used a service after sexual debut; some of these had obtained condoms elsewhere (25% of women and 33% of men who gave a reason for delay) or had not known about services or their location (11-19%). Among the women, 20-24% had been embarrassed or scared, or concerned about confidentiality or age; 32% had visited a provider because they had had unprotected sex. Sixty-three percent of men who had delayed using a service reported that the ability to obtain free condoms had prompted their first visit. Only 43% of respondents who postponed service use had practiced contraception consistently before visiting a provider. CONCLUSIONS: Young people need to be realistic about the possibility of having sex. Service use could be increased by providing more youth-specific services and by improving publicity and links between the youth, education and health sectors to dispel fears and myths about services.

Adolescent↗
PubMed2004

The sexual habits of British men and women over 40 years old.

OBJECTIVE: To obtain a greater understanding of sexual behaviour and habits among men with and without erectile dysfunction (ED), and their female partners, to improve the management of ED in heterosexual men. SUBJECTS AND METHODS: A population-based study was conducted amongst men and women aged > 40 years. None of the subjects were partners in the same sexual relationship. Interviews were conducted on the Internet via a panel-based questionnaire. RESULTS: In all, 225 (32%) men had self-reported ED and 88 (26%) women reported that their partner had ED. For all men (with or without ED) the mean time from first thinking of intercourse to beginning intercourse was just under 1 h. During their most recent period of sexual activity, 87% of men with and 78% of men without ED had intercourse with ejaculation at most once within 24 h; 81% of men and 89% of women felt that it was neither very nor extremely important to have intercourse with ejaculation more than once in a 24-h period. CONCLUSIONS: This study reports for the first time the frequency of sexual activity in British men and women in heterosexual relationships, and describes the usual timings of sexual events. Few significant differences were identified between men with or with no ED.

Adult↗
PubMed1991

Swedish adolescents' knowledge of sexually transmitted diseases and their attitudes to the condom.

In an attempt to assess the risk of AIDS infection in teenagers in Sweden a survey of adolescent sexual behaviour was conducted in Uppsala. Two hundred and nine students in the first form of an upper secondary school completed a questionnaire at the beginning of a lesson on family life. Half the female and 45% of the male students reported having had sexual intercourse. Forty per cent had not used contraception at their first intercourse and 23% reported no use of contraceptive at their most recent intercourse. The students considered that they had only a low risk of contracting a sexually transmitted disease. The use of condoms was relatively low and this has implications for the students' potential to contract a sexually transmitted disease.

Acquired Immunodeficiency Syndrome↗
PubMed1998

Fertility problems and breast cancer risk in young women: a case-control study in the United States.

OBJECTIVES: Late age at first birth and nulliparity are established risk factors for breast cancer, yet the extent to which fertility problems contribute to these associations remains largely unexplored. Here, we examine self-reported fertility problems as a risk factor for breast cancer in young women. METHODS: We used a population-based case-control study of 2,173 cases and 1,990 controls aged 20 to 54 years in the United States. Structured in-person interviews were used to elicit detailed information on established and potential breast cancer risk factors. Information was collected on pregnancy details, including difficulties becoming pregnant or maintaining a pregnancy. RESULTS: Self-reported difficulty in becoming pregnant or maintaining a pregnancy was reported by 450 cases and 377 controls. Overall, there was little association between these fertility problems and risk of breast cancer (odds ratio [OR] = 1.05). Parity was associated with a decreased risk of breast cancer in women both with (OR = 0.71) and without (OR = 0.79) fertility problems. There was little evidence of an increased risk of breast cancer with later age at first full-term birth among women without fertility problems (ORage 35+ :age <20 = 1.13, 95 percent confidence interval [CI] = 0.7-1.9), but a relatively strong association among women with fertility problems (ORage 35+ :age <20 = 2.96, CI = 1.3-7.0). Among women with a first full-term birth at age 35 or older, fertility problems were associated with a twofold risk of breast cancer. Analyses of duration of unprotected sexual intercourse prior to first pregnancy as an alternative estimate of infertility produced similar results. CONCLUSIONS: Our study suggests that the association between late age at first birth and breast cancer is stronger among women with self-reported fertility problems than among women with no fertility problems.

Adult↗
PubMed2005

Timing of pubertal maturation and the onset of sexual behavior among Zimbabwe school boys.

The relationship between reproductive maturation and the onset of sexual behavior in boys across cultures is unclear. To explore the relative timing of pubertal events and their relationship to the onset of sexual behavior, we used data collected from 442 Zimbabwe school boys aged 12-18 years. Measures of reproductive maturation included self-reported spontaneous nocturnal emission, secondary sexual characteristics, and salivary testosterone. Behavioral measures included age at first sexual fantasies, non-coital sexual behavior, and coitus. Sigmoid interpolation curve techniques indicated a median age of first erection at 10.75 +/- 0.11 years, first sexual fantasy at 12.66 +/- 0.03 years, first spontaneous nocturnal emission at 13.02 +/- 0.03 years, and adult levels of blood testosterone at 17.2 +/- 0.7 years. First reported spontaneous nocturnal emission was significantly related to all measures of sexual behavior. Multiple regression models indicated that first reported spontaneous nocturnal emission was a stronger predictor of sexual behavior than variation in secondary sexual characteristics. In addition, testosterone was a significant predictor of sexual fantasies and intercourse, independent of first reported spontaneous nocturnal emission. These results confirm earlier findings in other populations that self-reported spontaneous nocturnal emissions can be used as a marker of pubertal timing among adolescent boys. They also suggest that variation in testosterone plays a role in the onset of sexual behavior among boys, beyond its relationship to developmental timing. The behavioral mechanisms represented by the significant effects of testosterone reported here remain to be investigated.

Adolescent↗
PubMed1991

Premarital sexual experience among adolescent women--United States, 1970-1988.

The initiation of sexual intercourse early in life is associated with an increased number of sex partners and a greater risk for sexually transmitted diseases (STDs). This report describes trends in age at first premarital sexual intercourse for adolescent women (15-19 years of age) in the United States during 1970-1988 and indicates an accelerated increase in the proportion having had premarital sex from 1986 to 1988.

Adolescent↗
PubMedDate not supplied

Repeat abortion: is it a problem?

As the number of Canadian women who have had induced abortions increases with each succeeding year, the number at risk--and the actual incidence--of repeat abortion also increases. Some researchers have argued that women who have more than one induced abortion are less well adjusted, others that they are less willing to use contraceptives, perhaps because of anxiety about sexuality. Still others have suggested that repeat abortion is unrelated to the psychology or attitudes of individual women, but rather is an inevitable result of imperfect contraceptives, imperfect contraceptive practice and the availability of legal abortion for the termination of unwanted pregnancies. A group of 580 women seeking abortions were interviewed at the Montreal General Hospital and given a number of psychological tests. About one in five of these women were having repeat abortions. The women having repeat abortions were older, less likely to be married and more tolerant of legal abortion than were women having their first abortions. They also had intercourse more frequently than the first-abortion patients. Women obtaining a repeat abortion were slightly more likely to have been using contraceptives at the time they became pregnant, but they did not differ from first-abortion patients in the types of methods that they used. On no other social or demographic characteristics, measures of psychological adjustment or attitudes about sexuality were there any important differences between the groups. A more complex statistical analysis reveals that the two most important factors differentiating first-abortion and repeat-abortion patients are age and coital frequency--both of which are variables that reflect added exposure to the risk of unintended pregnancy.(ABSTRACT TRUNCATED AT 250 WORDS)

Abortion, Induced↗
PubMed1993

[Does prostaglandin El (PGE1) help restoration of spontaneous erections?].

The effectiveness of intracavernous PGE1 injections for spontaneous erections has been assessed in this study. Patients with disorders of erection were treated with 6 intracavernous PGE1 injections (10 to 25 micrograms) at 15-day intervals. An exploration was undertaken in these patients to establish the cause of the disorders of erection. Spontaneous erections were compared before and after the six PGE1 injections. Thirty-five patients were studied. Their average age was 58.8 years. The cause of the disorders of erection was organic [22] or psychogenic [13]. Thirty-one patients (88%) had an erection allowing sexual intercourse after the first PGE1 injection, two had a weak erection and two had no erection. After more than one year, 24 (73%) of the 33 patients treated reported improvement of spontaneous erections, allowing intercourse; 11 (33%) occasionally received a PGE1 injection. Nine (27%) were not improved, including two psychogenic cases. The number of patients who occasionally resorted to PGE1 injections raised from 6 to 11 (33%). This study shows the effectiveness--at least temporarily--of repeated PGE1 on spontaneous erections, owing to an action on the psychogenic component of disorders of erection, but maybe also to a local, long-lasting action of PGE1 on the cavernous tissue.

Erectile Dysfunction↗
PubMed2006

On orgasm, sexual techniques, and erotic perceptions in 18- to 74-year-old Swedish women.

OBJECTIVES: To explore, in an age perspective, women's lifetime sexual techniques and the extent to which they had led to orgasm. To relate these techniques and current erotic perceptions to orgasmic function in women sexually active during the last 12 months and to describe the relative impact of orgasmic function/dysfunction on their sexual well-being. METHODS: A nationally representative sample of 18- to 74-year-old women (N = 1,335) participated. Nearly all were heterosexual. Current orgasmic capacity was broadly and subjectively classified into: no, mild, or manifest dysfunction. Sexual techniques and erotic perceptions were recorded together with level of sexual satisfaction. RESULTS: Generational differences characterized age at first orgasm and intercourse, types and width of sexual repertoire, and also current erotic perceptions, while orgasmic dysfunction and distress caused by it were less age dependent. Likely protectors of good orgasmic function, mainly against manifest dysfunction, were: a relatively early age at first orgasm, a relatively greater repertoire of techniques used--in particular having been caressed manually or orally by partner(s), achievement of orgasm by penile intravaginal movements, attaching importance to sexuality and being relatively easily sexually aroused. In turn, among other aspects of female sexual function women who did not have orgasmic dysfunction or distress were particularly likely to be satisfied with their sexual life. CONCLUSION: Besides providing data on matters frequently said to be sensitive this investigation shows that women's generation and with it several long-ranging aspects of women's sexual history and their feelings of being sexual are important indicators of their orgasmic and thereby their overall sexual well-being. When (in clinical practice) establishing treatment strategy for women with orgasmic dysfunction due respect should be given to these factors.

Adult↗
PubMed2005

Brief report: the effects of condom insistence on the perceptions of adolescents in first time and repeated occasions of sexual intercourse.

The research reported here replicated Hocking et al. (Journal of Adolescence 22 (1999) 355) and further examined the effects of insisting on condom usage, by expanding the experimental conditions under which condom use occurs to include repeated sexual encounters in ongoing relationships. In Study 1, Hocking et al. (Journal of Adolescence 22 (1999) 355) results were replicated. In Study 2, using identical procedures, participants imagined engaging in sexual intercourse in which their partner of 3 months either insisted on the continued use of a condom or requested that no condom be used. Results for Study 2 were such that participants in the condom insistence conditions reported greater feelings of positivity about themselves, their partners, and the sexual experience, than participants whose partners did not insist on condom use during sex.

Adult↗
PubMedDate not supplied

The dynamics of young men's condom use during and across relationships.

According to data from the 1991 National Survey of Adolescent Males, condom use is likely to be highest at the beginning of relationships and to decline as the relationship continues. The proportion of sexually active men aged 17-22 who used a condom with their most recent partner declined from 53% the first time they had intercourse with that partner to 44% at the most recent episode. Condom use also decreases with age; 59% of 17-18-year-olds used a condom the first time they had intercourse with their most recent partner, compared with 56% of 19-20-year-olds and 46% of 21-22-year-olds. However, the probability that the female partner used the pill the first time that the couple had sex increased with the man's age--from 21% among 17-18-year-olds to 35% among 21-22-year-olds. Young men were more likely to have used a condom if they thought their partner was sexually inexperienced, and less likely to have done so if they suspected their partner was at high risk for an STD.

Adolescent↗
PubMed2003

Long-term influence of sexual norms and attitudes on timing of sexual initiation among urban minority youth.

This study assessed whether sexual norms and attitudes expressed during early adolescence by minority youth from economically disadvantaged urban areas produce a sustained influence on the timing of sexual initiation. African American and Latino youth attending three middle schools were enrolled in the Reach for Health study in seventh grade and followed from an average age of 12.2 to 16.1 years. Some 849 respondents answered the question, "Have you ever had sexual intercourse" at four time points: fall seventh, spring seventh, spring eighth, and spring 10th grade. Culturally tailored scales assessed sex norms and outcome expectancies, sexual responsibility, and refusal attitudes at fall seventh grade. Influence of these norms and attitudes in early adolescence on timing of first reported sexual intercourse was examined using ANOVA controlling for gender. At fall seventh grade, 30.7% of boys and 7.7% of girls reported sexual intercourse; by spring 10th grade, the figures were 74.8% and 56.4%, respectively. Those reporting greater peer involvement in sex and more positive sex outcome expectancies were more likely to have initiated sex by fall seventh grade. Through 10th grade, the higher the scores on peer norms (f = 41.08, p < .0001) and outcome expectancies (f = 5.87, p = .002) at entry into seventh grade, the earlier the timing of initiation. Higher scores on sex responsibility at baseline were associated with delayed sexual intercourse (f = 7.36, p < .001), as are refusal attitudes (f = 15.62, p < .0001). Despite significant gender differences in timing of initiation and mean scale scores, these relationships were similar for males and females. Findings suggest the importance of addressing sexual norms and attitudes of minority youth in interventions to delay early sexual initiation in urban environments where this risk is high. Given their sustained influence on timing of sexual initiation, such interventions must begin prior to middle school and continue through mid-adolescence, years when early sexual experience can lead to negative health and social outcomes.

Adolescent↗
PubMed1997

Caffeine intake and delayed conception: a European multicenter study on infertility and subfecundity. European Study Group on Infertility Subfecundity.

The effects of caffeine consumption on delayed conception were evaluated in a European multicenter study on risk factors of infertility. Information was collected retrospectively on time of unprotected intercourse for the first pregnancy and the most recent waiting time episode in a randomly selected sample of 3,187 women aged 25-44 years from five European countries (Denmark, Germany, Italy, Poland, and Spain) between August 1991 and February 1993. The consumption of caffeinated beverages at the beginning of the waiting time was used to estimate daily caffeine intake, which was categorized as 0-100, 101-300, 301-500, and > or = 501 mg. Risk of subfecundity (> or = 9.5 months) and the fecundability ratio, respectively, were assessed by logistic regression and Cox proportional hazard analyses, adjusting for age, parity, smoking, alcohol consumption, frequency of intercourse, educational level, working status, use of oral contraceptives, and country. A significantly increased odds ratio (OR) of 1.45 (95% confidence interval (CI) 1.03-2.04) for subfecundity in the first pregnancy was observed for women drinking more than 500 mg of caffeine per day, the effect being relatively stronger in smokers (OR = 1.56, 95% CI 0.92-2.63) than in nonsmokers (OR = 1.38, 95% CI 0.85-2.23). Women in the highest level of consumption had an increase in the time leading to the first pregnancy of 11% (hazard ratio = 0.90, 95% CI 0.78-1.03). These associations were observed consistently in all countries as well as for the most recent waiting time episode. The authors conclude that high levels of caffeine intake may delay conception among fertile women.

Adult↗
PubMed1999

Preimplantation urinary hormone profiles and the probability of conception in healthy women.

OBJECTIVE: To examine hormonal predictors of conception in menstrual cycles from normal women. DESIGN: Longitudinal study. SETTING: Community. PATIENT(S): Two hundred fifteen healthy female volunteers with no known fertility problems who were trying to conceive. INTERVENTION(S): Participants recorded menstrual bleeding, sexual intercourse, and collected first morning urine specimens daily from when they stopped contraception until they became pregnant or for 6 months if no clinical pregnancy was achieved. Measurements were made of urinary LH and urinary metabolites of estrogen and progesterone. MAIN OUTCOME MEASURE(S): Conception was identified by a sensitive and specific immunoradiometric assay for urinary hCG. RESULT(S): Statistical analyses of 189 conception and 409 nonconception cycles controlled for sexual intercourse and interdependence of cycles from the same woman. Conception was more likely in cycles with lower baseline progesterone metabolite levels, higher ovulatory LH, and higher midluteal progesterone. Midluteal estrogen also was elevated in conception cycles when examined without adjusting for other hormone levels, but this finding did not persist after multivariate adjustment. CONCLUSIONS: Menstrual cycles in normal women vary in their hormonal quality in ways that are predictive of cycle fertility.

Adult↗
PubMed2002

Timing of pubertal maturation and heterosexual behavior among Hong Kong Chinese adolescents.

This study presents a cross-sectional examination of the independent contribution of pubertal maturation timing to heterosexual activity among Chinese adolescents. A standardized self-administered questionnaire was designed to obtain information on a spectrum of physical heterosexual behaviors from dating to sexual intercourse, age at first nocturnal ejaculation in boys, age at menarche in girls, and several psychosocial variables that might be associated with sexual behavior in adolescents. A total of 4,116 students aged from 14 to 18 years (2,175 boys and 1,941 girls) were recruited in the Youth Sexuality Survey of the Hong Kong Family Planning Association in 1996-97. When groups were defined as "early," "average," and "late maturers," among boys, early maturers were youngest to report dating and to have sexual intercourse, followed by average and late maturers. Among girls, late maturers were slower to date and have sexual intercourse, but early maturers showed no difference from average maturers. Age of maturation was significantly lower for those reporting all heterosexual behaviors for both sexes. Our findings illustrate culture's moderation of the expression of biological differences.

Adolescent↗
PubMedDate not supplied

Measuring contraceptive use patterns among teenage and adult women.

CONTEXT: Measures of contraceptive use at one point in time do not account for its changing nature. A measure that addresses the pattern of method use over time may better predict the cumulative risk of unintended pregnancy. METHODS: Women at risk of unintended pregnancy were selected from the 1995 National Survey of Family Growth, and their contraceptive use patterns were compared across age-groups. Survival analysis was used to validate women's long-term use pattern as an indicator of pregnancy risk, and multivariate regression analyses were used to explore potential covariates of current patterns of contraceptive use. RESULTS: More than two-thirds of women aged 15-19 report long-term uninterrupted contraceptive use, but they are more likely to report sporadic use and less likely to report uninterrupted use of a very effective method than are women aged 25-34. Compared with women aged 25-34, women aged 20-24 have higher rates of sporadic use and lower rates of effective uninterrupted use. Among teenagers, nonusers are 12 times as likely as uninterrupted effective users to experience an unintended pregnancy within 12 months at risk. Women in less stable relationships, those having more infrequent intercourse and women who have recently experienced nonvoluntary intercourse for the first time are more likely than others to have a high-risk contraceptive pattern. Women aged 17 and younger whose current partner is more than three years older are significantly less likely to practice contraception than are their peers whose partner is closer in age. CONCLUSIONS: Long-term contraceptive use pattern is a valid predictor of unintended pregnancy risk. Policies aimed at reducing unintended pregnancies should target women who do not practice contraception and those who are sporadic users. Women in unstable relationships, those having infrequent sex and women who experience sexual coercion need access to methods, such as emergency contraception, that can be used sporadically or after unprotected intercourse.

Adolescent↗
PubMed1987

Cytomegalovirus infection in homosexual men. Relationship to sexual practices, antibody to human immunodeficiency virus, and cell-mediated immunity.

To investigate the relationships among cytomegalovirus infection, sexual behavior, human immunodeficiency virus (HIV) seropositivity, and indexes of cellular immunity, 180 homosexual men and 26 heterosexual men were studied. Among the homosexual men, cytomegalovirus seropositivity was associated with increased T8 lymphocyte counts (p less than 0.001) and reduced T4/T8 ratios (p = 0.006); these results were independent of HIV infection. Cytomegalovirus seropositivity was also associated with increasing age, numbers of sexual partners, and the practice of anal-receptive intercourse. At the first visit, cytomegalovirus was isolated from none of 13 cytomegalovirus-seropositive heterosexual subjects, compared with 62 (36 percent) of 171 seropositive homosexual men (p less than 0.005). Viral isolation was most common from semen. Among 32 cytomegalovirus-seropositive homosexual subjects from whom culture specimens were obtained more than four times over 10 to 30 months, 72 percent of the specimens were culture-positive. The mean duration of cytomegalovirus excretion in semen was 22 months, and in urine, the duration was nine months. Cytomegalovirus excretion was associated with younger age and reduced lymphocyte proliferation in response to cytomegalovirus, but not with antibody to HIV. Cytomegalovirus infection is sexually transmitted among homosexual men, perhaps by rectal intercourse, and is associated with alterations in T lymphocyte subsets. Most seropositive homosexual men excrete cytomegalovirus intermittently, primarily in the semen.

Adult↗