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Updated: Feb 5, 2026

Assessment of Sexual Behavior of Male Mice
Published on: March 5, 2020
Sexual behaviors: study in the youth
Patrícia Sofia Ferreira Miranda1, Joana Margarida Gonçalves Aquino1, Ricardo Miguel Patrício de Carvalho Monteiro1
1Centro Hospitalar de Leiria, Leiria, Portugal.
Contraceptive use during first sexual intercourse is high among adolescents and youth. However, concerns remain regarding inconsistent use in subsequent encounters and unprotected sexual activity, particularly among younger individuals, highlighting a need for improved sexual education.
Area of Science:
- Public Health
- Adolescent Health
- Sexual Health
Background:
- Adolescent sexual behavior is a critical area of public health research.
- Understanding patterns of sexual activity and contraceptive use is essential for targeted interventions.
Purpose of the Study:
- To characterize sexual behaviors in a sample of adolescents and youth aged 14-24 years.
- To identify trends in contraceptive use and unprotected sexual intercourse.
Main Methods:
- An analytical descriptive study was conducted using a World Health Organization-adapted questionnaire.
- The study surveyed 2,369 students in a Portuguese city, divided into two age groups: 14-19 years (G1) and 20-24 years (G2).
Main Results:
- The mean age of first sexual intercourse was 16.4 years, with 93% using contraception.
- Emergency contraception use was reported by 54% of participants.
- Unprotected sexual intercourse occurred in 21% of cases, with higher rates among females and younger participants, and was sometimes associated with alcohol influence.
Conclusions:
- While contraception use during first sexual intercourse is common, inconsistent use in subsequent encounters is a concern.
- A significant percentage of young individuals consider contraception unnecessary for subsequent sexual acts.
- The prevalence of unprotected, unplanned, and alcohol-influenced sexual intercourse necessitates enhanced sexual education programs for adolescents.
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