Effect of Information-motivation-behavioral Skill Model-based Safer Sexual Dual Protection Intervention on Knowledge, Motivation, Behavioral Skills and Practice of Abstinence and Dual Protection Use Among Female University Students in Ethiopia: A Quasi-experimental Study

Introduction The dual burden of HIV/AIDS and unwanted pregnancy continues to be a major public health concern worldwide, with young women disproportionately affected. In 2020, of the estimated 1.5 of people newly infected with HIV worldwide, approximately 260,000 were adolescent girls and young women aged 15--24 years, 83% of whom were in sub-Saharan Africa. In Ethiopia, although the adult HIV prevalence rate declined from 1.5% in 2011 to 0.93% in 2019, women remained disproportionately affected compared with men (1.22% vs. 0.64%), and the highest prevalence was observed among unmarried young women (9%). In addition, the rates of unwanted pregnancies among young women in Ethiopia remain high, with approximately 37% of unwanted pregnancies occurring among young women aged 20--24 years.

In response to the HIV epidemic, many HIV/AIDS prevention programs have emphasized safer sexual practices, such as abstinence, mutual monogamy, and condom use, as effective strategies for reducing the risk of HIV infection among youth. In addition, because young women are at increased risk and vulnerable to STI/HIV and unwanted pregnancy from unsafe premarital sex, and both can be prevented simultaneously be the same safer sexual practices as dual protection, the recent WHO/UNAIDS recommendation on HIV prevention for young women emphasizes the need for dual protection: defined as safer sexual behaviors that provide simultaneous protection against both HIV/STI and unwanted pregnancy through abstinence, consistent condom use, or dual-method use as complementary strategies for youth in settings with high HIV burden.

To achieve the maximum preventive effects, condoms are the only barrier method available to reduce the risk of STI/HIV infections and prevent pregnancy when used correctly and consistently, either alone or with other contraceptive methods as a dual protection among sexually active young women. Abstinence is the only sure way and most effective (100%) to avoid the risks of both HIV/STIs and unwanted pregnancy among unmarried youth who choose to remain abstinent. However, although trends in the use of contraceptive methods among unmarried sexually active young women in Ethiopia increased to 55% in 2016, only 4% used condoms, indicating that they were not dually protected and thus remained at an increased risk of HIV infection. Despite dual protection options for youth, there is limited evidence of effective interventions and strategies for promoting dual protection for youth in Ethiopia.

To date, school-based comprehensive sexuality education (CSE) has been considered the most effective strategy for protecting youth from the risk of HIV/STI and unwanted pregnancy by improving knowledge, attitudes, skills, and behaviors, such as delay of sexual debut, condom use, and contraceptive use. However, while young women may also need dual protection options to simultaneously prevent both risks of HIV/STIs and unwanted pregnancy, most of the existing sexual health education curriculum makes no explicit reference to dual protection messages for youth and thus remains unknown and not practiced. In addition, it is clear from research that for sexual health education intervention to be more effective in promoting sexual health behavior change, it must be guided by appropriate theoretical models for the development, implementation, and evaluation of the programs. Evidence from intervention studies indicates that theoretically derived and empirically based interventions can successfully promote the adoption of protective sexual behaviors among youth.

Theoretical perspectives Various behavioral theories have been applied to understand HIV risk behaviors and to promote safer sexual behaviors. Information-motivation-behavioral skills model is one that has been widely used in the areas of HIV prevention and received considerable attention and support for its comprehensiveness, specification of relationships, and ease of translating into targeted interventions to promote HIV prevention behaviors. The IMB model asserts that information, motivation, and behavioral skills are fundamental determinants of HIV-preventive behaviors. The model specifies that information and motivation work through behavioral skills to indirectly affect HIV-preventive behaviors. The model also assumes that information and motivation may have a direct effect on preventive behavior when complicated behavioral skills are not necessary for practice, such as abstinence, as opposed to using condoms by sexually active young women.