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PubMed2000

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.

Adolescent↗
PubMedDate not supplied

The effects of contraceptive education on method use at first intercourse.

Despite long-standing public support for sex education in the schools, it has been difficult to show concrete effects of sex education on sexual and contraceptive behavior. Data from the 1988 National Survey of Family Growth indicate that exposure to a formal contraceptive education program increases the likelihood that a teenage woman will use a contraceptive method at first intercourse. According to the results of a multivariate analysis, the odds that a young woman will use any method and the odds that she will use a condom increase by about one-third following instruction about birth control; the effect on the likelihood of pill use, however, is nonsignificant. If contraceptive education occurs in the same year that a teenager becomes sexually active, the odds of any method use and of condom use are increased by 70-80%, and the odds of pill use are more than doubled. The results also suggest that with greater educational efforts, the proportion of teenagers who use condoms at first intercourse could increase from 52% to 59%, while the proportion using no method might decrease from 41% to 33%.

Adolescent↗
PubMed1989

Age of partners at first intercourse among Danish males and females.

In 1984-1985 a representative sample of 286 Danish women (response rate = 75.3%) and 336 Danish men (response rate = 77.8%), ages 16-20 years, was interviewed about their first sexual intercourse. A cumulative frequency function was constructed and the median age at sexual debut was estimated at 16.8 years for both male and female. Generally the age difference between the partners at first intercourse was only a few years. However, the young women almost never reported their first sexual partner as younger than themselves. A cross-check was made of the information given by two homogeneous subsamples of the 47 young women and 80 young men who had their first sexual intercourse with a partner who was also a debutant. Self-reported age among the males differed significantly from the age of the first sexual partner as stated by the females in these subsamples. Therefore, there is bias in the reporting of age of partner at first intercourse. As the self-reported age at first sexual intercourse by young women agrees with the age of first partner as stated by young men, the bias seems to manifest itself predominantly as a systematic misreporting in the age of male partners of debutant females.

Adolescent↗
PubMed2005

Factors influencing boys' age at first intercourse and condom use in the Shantytowns of Recife, Brazil.

Despite the general recognition that the sexual practices of adolescent boys place them at high risk of acquiring sexually transmitted infections (STIs), including HIV, and of causing unwanted pregnancies, advances in mapping their sexual behaviors have been slow. This study uses data recently collected from low-income areas of the city of Recife, Brazil, to study boys' age at first sexual intercourse and factors that hinder their use of condoms. These boys become sexually active at early ages, and despite their general awareness of HIV, they rarely use condoms, especially at ages younger than 15. Sustained family involvement in guiding boys is associated with later first intercourse and an increased use of condoms. Boys who describe themselves as shy with girls have later first intercourse, although the probability of their using condoms does not differ from that of other boys of their age. Higher socioeconomic status leads to earlier sexual activity for boys (in contrast with girls), but also to a greater likelihood of using condoms during first intercourse.

Adolescent↗
PubMed1982

Age at time of first intercourse v. chronologic age as a basis for Pap smear screening.

The Walton Report on cervical cancer screening programs recently recommended a new program for screening for cervical cancer based on chronologic age, calling for 3- and 5-year intervals between examinations. It recommended that such examinations be discontinued after 60 years of age. In a group of 232 routinely examined women (aged 18 to 47 years) in whom cervical intraepithelial neoplasia developed the timing of onset of the disease and the implications for screening were studied. The average age at the time of diagnosis was 30 years; in 20% of the patients the diagnosis had been made after age 35. The screening program recommended in the Walton Report would have been effective in diagnosing most cases (80%) in this sample by age 35 and all by age 60. However, when the patients were grouped according to age at the time of first intercourse, the diagnosis had been made after age 35 in only 13% of those who started having intercourse at age 15 to 17 years, 20% of those who started at age 18 to 19 years and 33% of those who started at age 20 years of later. When the times of diagnosis were expressed by number of years of intercourse the distributions became uniform in the same three groups; in 72% of all the patients the diagnosis had been made within the first 15 years of intercourse, in 88% it had been made within 20 years and in 100% it had been made by 30 years. These data suggest that a program based on number of years of intercourse may be more uniform and more efficient than one based on chronologic age, and that cytologic examinations should be concentrated during the time when most cases develop -- 6 to 20 years after the time of first intercourse.

Adolescent↗
PubMed2006

Moderating effects of gender on alcohol use: implications for condom use at first intercourse.

This study examined whether the effects of level of alcohol consumption on condom use at first sex depend on adolescents' gender, utilizing data from Wave I of the National Longitudinal Study of Adolescent Health (Add Health). Compared to girls who did not consume any alcohol, inebriated girls were significantly less likely to use a condom at first intercourse (odds ratio = 0.41, p <or= .001). There was no difference for girls with some alcohol use or for boys, regardless of alcohol use level. Other sociodemographic variables negatively associated with condom use were having a young age at first sex, being Asian American, and living in a stepfamily with one's biological father; mother's education was positively associated with condom use. Adjusted predicted probabilities showed that girls who had first sex younger than 14 years and who were inebriated had the lowest probability of using a condom (p = .384). The results support the hypothesis that alcohol use during sex has a negative effect on condom use at first sex, moderated by gender. Adolescent reproductive health programs that also include alcohol education may prove useful.

Adolescent↗
PubMed2002

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.

Adolescent↗
PubMed2006

Condom use at first intercourse with a new partner in female adolescents and young adults: the role of cognitive planning and motives for having sex.

This study examined the extent to which cognitive planning and motives for sex can explain condom use at first intercourse with young females' most recent partner. A total of 133 female adolescents completed a questionnaire on cognitive planning (i.e., mentally preparing oneself for discussing condom use and for managing condoms), motives for having sex (i.e., having sex to express love, to experience pleasure, to enhance mood, and to please others), and condom use at this particular occasion. Logistic regression analyses showed that condom use was positively related to cognitive planning with respect to discussing condom use and negatively related to the motive for having sex to enhance mood. Cognitive planning for the management of condoms did not have a significant overall effect on condom use, but it did appear to be very effective for those adolescents who had a low score on the motive for having sex to express love. It thus appears useful to strengthen the skills of adolescents to discuss the use of condoms. Furthermore, stressing the negative affective consequences of unsafe sex may be particularly effective for those who are inclined to have sex to enhance mood, while encouraging adolescents to make plans for the management of condoms is likely to positively affect the use of condoms among those who are not primarily motivated to express love by having sex.

Adolescent↗
PubMedDate not supplied

Immaculate conceptions in sub-saharan Africa: exploratory analysis of inconsistencies in the timing of first sexual intercourse and first birth.

Survey data from a number of developing countries show that a considerable proportion of parous women report that they had their first birth one or more years before they first had sexual intercourse. In this paper, I use data from eight African Demographic and Health Surveys to explore factors that contribute to cross-national differentials in the prevalence of these "immaculate conceptions." The results suggest that this data problem results not only from recall errors, but also from the fact that some respondents misinterpret the question on first sexual intercourse and report their age at the onset of intercourse with either their first or current husband rather than their age at sexual initiation.

Adolescent↗
PubMed1989

Age at first intercourse.

In 1984-85 a representative sample of 286 Danish women and 336 men aged 16-20 years were interviewed about their sexual debut. Seventy-four females (25.9%) and 101 males (30.1%) had not yet experienced sexual intercourse. A maximum likelihood estimation method was used to establish the age distribution at sexual debut. This takes into account knowledge of age at interview among the non-experienced respondents and of the few who did not report age at sexual debut. The median age at first sexual intercourse was close to 16.8 years for both females and males. This appeared to be a consequence of age at debut declining among women and remaining unchanged among males during the preceding 20 years.

Adolescent↗
PubMed2002

Inconsistencies in reporting the occurence and timing of first intercourse among adolescents.

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.

Adolescent↗
PubMed2001

Relationship between adolescent-parental communication and initiation of first intercourse by adolescents.

OBJECTIVE: To examine the level of communication between parents and adolescents and correlate the findings with onset of sexual intercourse. METHODS: This was a 10-year longitudinal study. Subjects filled out questionnaires at the time of each health supervision visit. The data in this article were harvested at enrollment and at the 5-year point. Comparisons of adolescent-parental communication were first compared between the virginal and nonvirginal groups at the initiation of the study. The results were then confirmed by adding data from patients in the virginal group who converted over the first 5 years of the study to the nonvirginal group. Two hundred and three patients, aged 12-21 years, were studied from a pediatrician's practice panel in Middleton, Wisconsin. The questionnaires inquired about grades and activities school, relationship with siblings and parents at home, and risk-taking behaviors involving alcohol, drugs, and sex with peers. Statistical analysis included the Student's t-test to determine the mean difference between groups. Fisher's exact test was used to evaluate the association of variables to the status of patients' sexual activity at enrollment. Multiple logistic regression was conducted on the initial enrollment data to examine the association between the initial covariates and patients' sexual status. RESULTS: During the initial survey, 172 enrolled patients were in the virginal group and 31 in the nonvirginal group. The virginal group had a higher rating of communication with their parents after adjusting for age (p <.001). To verify these findings, we examined an additional 29 patients in the virginal group who converted to nonvirginal status during the first 5 years of the study. We then compared the level of adolescent-parental communication between the subgroup who converted to nonvirginal status with the level of communication of the subgroup who remained virgins. Even after correcting for age, communication with the mother was significantly better in patients who maintained their virginal status (p <.01). CONCLUSIONS: Teenagers who perceive that they have a better level of communication with their parents are less likely to engage in sexual intercourse.

Adolescent↗
PubMedDate not supplied

Factors affecting British teenagers' contraceptive use at first intercourse: the importance of partner communication.

CONTEXT: Despite the growing body of knowledge about teenager's sexual and contraceptive behavior in the United Kingdom, much quantitative work has failed to consider the broader social contexts in which this behavior occurs. METHODS: A 1999 survey of 963 full-time students aged 16-18 gathered information on individual, contextual and background factors. Logistic regression analyses were conducted to investigate how these factors determine use of a modern method at first sex and whether such use is discussed beforehand. RESULTS: Three factors were significantly associated with the odds of contraceptive use at first sex among young men-discussing contraception beforehand (odds ratios, 5.7-13.8), giving an intimate reason for having sex the first time (6.4) and having parents who portrayed sexuality positively during childhood and the early teenage years (1.2). For young women, five factors significantly predicted use-communication (odds ratios, 6.2-15.0), age at first sex (1.8), not having visited a service provider (5.0), feeling comfortable interacting with teenage males (1.2) and "sort of" or not expecting to have sex (0.2 and 0.4, respectively). Among young men, the factors significantly associated with the odds of having discussed contraception were the level of social deprivation, the length of the relationship and parents' openness to talking about sex; among young women, the factors were the number of intimate reasons given for having sex and the warmth and availability of parents. CONCLUSIONS: Efforts to increase young people's ability to negotiate sexual and contraceptive decision-making should be multifaceted. It is essential that parents provide a supportive climate throughout childhood and adolescence, where discussions of sexual issues are acceptable and where families feel comfortable talking openly.

Adolescent↗
PubMed2006

African-American and Hispanic adolescents' intentions to delay first intercourse: parental communication as a buffer for sexually active peers.

PURPOSE: Parents and peers often create conflicting influences on adolescent sexual delay. This study examines the moderating effects of mothers' responsiveness during sex discussions on the negative relationship between sexually active peers and sexual delay among African-American and Hispanic adolescents. METHODS: Interview data from 530 African-American and Hispanic non-sexually active high school students were used to examine the effects of mother-adolescent sex discussions and peer norms on intentions to delay or initiate intercourse within the next year. Logistic regression was performed to test the moderating effects of adolescents' reports of mothers' responsiveness (openness, comfort, and understanding during sex discussions) on the relationship between perceived peer sexual activity and adolescent sexual delay. RESULTS: The relationship between mothers' responsiveness during sex discussions, peer sexual activity, and their effects on adolescent sexual delay is complex. Mother's responsiveness had a buffering effect on the negative effects of sexually active peers. Among adolescents who perceived a high percentage of their peers to be sexually active, those who reported that their mothers had above-average responsiveness were 1.6 times more likely to plan to delay intercourse than were adolescents who reported that their mothers had average responsiveness. CONCLUSIONS: Parents and peers are mutually contingent influences in the dynamic social context of adolescents' lives. Although sexually active peers have a negative effect on adolescent sexual delay, responsive parent-adolescent sex discussions can buffer these effects. Intervention efforts can help parents develop the knowledge and communication skills they need to discuss sexual topics with their children effectively.

Adolescent↗