Gallo Maria F, Nguyen Nghia, Nguyen Chuong, Steiner Markus J
The Ohio State University, College of Public Health, Division of Epidemiology, Cunz Hall, 1841 Neil Avenue, Columbus, OH, 43210, USA.
Department of Obstetrics and Gynecology, Vinmec International Hospital, 458 Minh Khai, Hanoi, Vietnam.
Contracept X. 2019;1:100009. doi: 10.1016/j.conx.2019.100009.
To evaluate the association between contraceptive knowledge and type of method used.
We analyzed data from a cross-sectional study of sexually active women in Hanoi, Vietnam, not desiring pregnancy. We used linear and logistic regression to evaluate contraceptive knowledge of users of the intrauterine device (IUD), combination oral contraception (COC) and male condoms. We measured contraceptive knowledge with seven questions on relative effectiveness of methods, reversibility, covert use, contraindications and side effects.
Respondents used IUD ( = 128), COC ( = 126) or condoms ( = 167). Summary knowledge scores did not differ by current type of method used. Only one knowledge domain, contraceptive effectiveness, varied by method. Compared to condom users, IUD users had higher odds of correctly identifying the IUD as more effective than COC, condoms and withdrawal (adjusted odds ratio [aOR], 4.8; 95% confidence interval [CI], 2.7-8.3). Higher proportions of condom users (49.7%) mistakenly identified condoms as the most effective of listed methods compared to IUD (20.3%) and COC users (23.0%). On the other hand, IUD and COC users had lower odds (aOR, 0.5; 95% CI, 0.2-1.0 and aOR, 0.3; 95% CI, 0.1-0.6, respectively) of identifying consistent condom use as better for pregnancy prevention than other practices (e.g., withdrawal and postcoital douching).
IUD users more often recognized that the IUD is highly effective while condom users appeared to overestimate condom effectiveness. Contraceptive counseling should ensure that women understand the relative effectiveness of methods. We found no evidence that other types of contraceptive knowledge differed by type of method used.
Knowledge of contraceptive effectiveness was the sole difference detected in contraceptive knowledge between women in Hanoi, Vietnam, using the IUD, COC or male condoms.
评估避孕知识与所使用避孕方法类型之间的关联。
我们分析了越南河内有性活动且不希望怀孕的女性的横断面研究数据。我们使用线性回归和逻辑回归来评估宫内节育器（IUD）、复方口服避孕药（COC）和男用避孕套使用者的避孕知识。我们通过关于避孕方法的相对有效性、可逆性、隐蔽使用、禁忌症和副作用的七个问题来衡量避孕知识。
受访者使用IUD（n = 128）、COC（n = 126）或避孕套（n = 167）。总体知识得分不因当前使用的避孕方法类型而有所不同。只有一个知识领域，即避孕有效性，因方法而异。与避孕套使用者相比，IUD使用者更有可能正确地认识到IUD比COC、避孕套和体外射精更有效（调整后的优势比[aOR]为4.8；95%置信区间[CI]为2.7 - 8.3）。与IUD使用者（20.3%）和COC使用者（23.0%）相比，更高比例的避孕套使用者（49.7%）错误地认为避孕套是所列方法中最有效的。另一方面，IUD和COC使用者认为持续使用避孕套比其他避孕方式（如体外射精和性交后冲洗）更有利于预防怀孕的可能性较低（aOR分别为0.5；95%CI为0.2 - 1.0和aOR为0.3；95%CI为0.1 - 0.6）。
IUD使用者更常认识到IUD非常有效，而避孕套使用者似乎高估了避孕套的有效性。避孕咨询应确保女性了解各种避孕方法的相对有效性。我们没有发现证据表明其他类型的避孕知识因所使用的避孕方法类型而有所不同。
在越南河内使用IUD、COC或男用避孕套的女性中，避孕有效性知识是在避孕知识方面检测到的唯一差异。
