School of Medicine, College of Medicine, Chang Gung University, Taoyuan City, Taiwan.
Department of Public Health, College of Medicine, Chang Gung University, Taoyuan City, Taiwan.
BMJ Open. 2021 Aug 17;11(8):e047727. doi: 10.1136/bmjopen-2020-047727.
Adolescents' sexual behaviours are associated with sexually transmitted infections and unwanted pregnancies. This study aimed to estimate the sexual intercourse and condom use rates at first and last sex among Taiwanese adolescents in grades 7-12.
A secondary data analysis of the Taiwan Global School-Based Student Health Survey's 2012-2016 data. The survey was anonymous, cross-sectional and nationwide.
Taiwan high school students (grades 7-12).
The sample comprised 27 525 students from junior high schools (grades 7-9), and senior high schools, comprehensive schools, vocational high schools and night schools (grades 10-12).
The rate of ever having had sexual intercourse; the rates and factors of condom use at first and last sex.
The sexual intercourse rate in each school type (in ascending order) was junior high school (1.62%), senior high school (4.14%), comprehensive school (9.08%), vocational high school (14.03%) and night school (41.09%). Condom use rate decreased from 57.07% (95% CI=54.31% to 59.83%) at first sex to 25.72% (95% CI=23.34% to 28.10%) at last sex (p<0.0001). The condom use rate (in ascending order) was junior high school (first sex: 37.67%, last sex: 19.76%), night school (55.83%, 22.62%), vocational high school (61.13%, 25.78%), comprehensive school (62.83%, 28.61%) and senior high school (68.38%, 34.96%). Older age at sexual debut was associated with condom use at first and last sex, and having one sexual partner was associated with condom use at last sex, as revealed by logistic regression analysis.
This study highlights an urgent need to instil a proper understanding of protected sex while adolescents are still in their formative years. Despite the low sexual intercourse rate (4.95%), there is lower condom use at last sex than at first sex, which indicates that many sexually active adolescents are not practising protected sex, especially among junior high school students.
青少年的性行为与性传播感染和意外怀孕有关。本研究旨在估计台湾 7-12 年级青少年首次和末次性行为的性交和 condom 使用率。
对 2012-2016 年台湾全球学校学生健康调查的二次数据分析。该调查是匿名的、横断面的和全国性的。
台湾高中学生（7-12 年级）。
样本包括来自初中（7-9 年级）和高中、综合学校、职业高中和夜校（10-12 年级）的 27525 名学生。
曾经有过性行为的比率；首次和末次性行为时 condom 使用的比率和因素。
各学校类型的性交率（递增顺序）为初中（1.62%）、高中（4.14%）、综合学校（9.08%）、职业高中（14.03%）和夜校（41.09%）。 condom 使用率从首次性行为的 57.07%（95%CI=54.31%至 59.83%）下降到末次性行为的 25.72%（95%CI=23.34%至 28.10%）（p<0.0001）。 condom 使用率（递增顺序）为初中（首次性行为：37.67%，末次性行为：19.76%）、夜校（55.83%，22.62%）、职业高中（61.13%，25.78%）、综合学校（62.83%，28.61%）和高中（68.38%，34.96%）。首次性行为时年龄较大与首次和末次性行为时 condom 使用有关，而首次性行为时只有一个性伴侣与末次性行为时 condom 使用有关，这是通过逻辑回归分析揭示的。
本研究强调了在青少年成长过程中，迫切需要灌输正确的安全性行为观念。尽管性行为率较低（4.95%），但末次性行为时 condom 使用率低于首次性行为时，这表明许多活跃的青少年没有进行安全性行为，尤其是在初中生中。
