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. 2026 Mar 19;8:1770464. doi: 10.3389/frph.2026.1770464

Table 2.

Knowledge of adolescent on reproductive and sexual health before and after educational session.

Characteristics Frequency/Percentage of results before session Frequency/Percentage of results after session
Knowledge about contraception?
Methods to prevent pregnancy. 96 (53.3%) 180 (100%)
Exercise to improve physical fitness. 47 (26.1%)
Tools to improve academic performance. 37 (20.6%)
Knowledge about preventing sexually transmitted diseases (Select all that apply)
Using condoms. 80 (44%) 175 (97.2%)
Washing your hands after being outside. 11 (6.1%) 0
Vaccination. 29 (16.1%) 0
Abstaining from sexual intercourse. 60 (33.3%) 5 (2.8%)
Do you think it is important to have knowledge about sex education?
Yes, it's important for everyone. 110 (61.1%) 180 (100%)
I'm not sure. 70 (38.9%) 0
No, it's not that important. 0 0
Where do you get information about sex education? (Select all that apply)
Internet. 94 (52.2%) 10 (5.6%)
School. 42 (23.3%) 20 (11.1%)
Friends. 0 0
Parents. 0 0
Healthcare professionals. 44 (24.4%) 150 (83.3%)
Do you feel informed enough to make decisions about your sexual life?
Yes, I'm completely sure. 95 (52.8%) 171 (95%)
Somewhat sure. 50 (27.8%) 0
No, I consider it a lack of information. 35 (19.4%) 9 (5%)
What are secondary sexual characteristics?
Characteristics that develop during puberty and changes not directly related to reproductive regression. 122 (67.8%) 158 (87.8%)
Primary sex characteristics (e.g., presence of ovaries or testes). 42 (23.3%) 17 (9.4%)
Genetic traits passed down from parents. 16 (8.9%) 5 (2.8%)
The first development of secondary sexual characteristics in boys begins with?
Growth of facial and body hair. 52 (28.9%) 75 (41.7%)
Enlargement of the breasts. 0 0
Voice change. 73 (40.6%) 30 (16.7%)
Growth of the genitals. 32 (17.8%) 61 (33.9%)
Appearance of acne and acne fluid. 23 (12.8%) 14 (7.8%)
The first development of secondary sexual characteristics in girls begins with?
Breast development. 39 (21.7%) 148 (82.2%)
Onset of menstruation. 55 (30.6%) 1 (0.6%)
Growth of underarm and pubic hair. 31 (17.2%) 3 (1.6%)
Change in body shape (more rounded hips). 55 (30.6%) 0
Increase in height. 0 0
Do you know what is normal and what may be cause for concern when secondary sexual characteristics develop?
Yes, I understand the difference well. 51 (28.3%) 112 (62.2%)
I partially know, but sometimes I have doubts. 75 (41.7%) 68 (37.8%)
No, I don't understand. 54 (30%) 0
Where do you get information about secondary sexual characteristics?
School (biology classes, life safety). 30 (16.7%) 30 (16.7%)
The Internet. 75 (41.7%) 27 (15%)
Friends. 25 (13.9%) 2 (1.1%)
Parents. 0 0
Medical professionals. 50 (27.8%) 121 (67.2%)
Do you feel confident knowing about the changes that are constantly happening in your body?
Yes, I am completely sure. 53 (29.4%) 108 (60%)
Most of the time I am sure, but sometimes I have questions. 100 (55.6%) 71 (39.4%)
No, I think it's a lack of information. 27 (15%) 1 (0.55%)
Do you know how to properly care for yourself during puberty (for example, how to care for your skin, what hygiene products to use)?
Yes, I'm well educated. 59 (32.8%) 131 (72.8%)
I know partly, but I want to learn more. 101 (56.1%) 49 (27.2%)
No, I don't understand it. 20 (11.1%) 0
How do you feel about the onset of menstruation? (For female only)
I understand that it's a normal part of growing up. 33 (36.7%) 80 (88.9)
I'm a little worried, but I know it's normal. 47 (52.2%) 10 (11.1%)
It scares me, I don't know what to do. 10 (11.1%) 0