Reece M, Herbenick D, Sanders S A, Monahan P, Temkit M, Yarber W L
Center for Sexual Health Promotion, HPER 116, 1025 East Seventh Street, Indiana University, Bloomington, IN 47405, USA.
Sex Transm Infect. 2008 Apr;84(2):143-9. doi: 10.1136/sti.2007.028316. Epub 2007 Oct 30.
This study compared failure rates of a standard-sized condom and a condom fitted to a man's penile length and circumference and assessed users' perceptions of condom acceptability and confidence in the efficacy of both condoms.
Using an experimental crossover design with Internet-based daily diaries, 820 men who wore at least one of each condom type reported outcomes and perceptions of condoms used during vaginal and anal intercourse events for which they were the insertive partner.
Breakage for fitted condoms (0.7%) was significantly less than for standard-sized condoms (1.4%). When assessed by penile dimensions, significantly less breakage of fitted condoms than standard-sized condoms was observed among men in the middle circumference category (12-13 cm) during anal intercourse (1.2% versus 5.6%), men in the larger circumference category (> or =14 cm) during vaginal intercourse (0.6% versus 2.6%), and men in the longer length category (> or =16 cm) for both vaginal (0.5% versus 2.5%) and anal (3.0% versus 9.8%) intercourse. More slippage upon withdrawal after vaginal intercourse occurred with fitted condoms among men in the middle penile length (1.9% versus 0.9%) and circumference (2.2% versus 0.7%) categories.
Fitted condoms may be valuable to sexually transmitted infection prevention efforts, particularly for men with larger penile dimensions. That fitted condoms slipped more for some men provides insights into the need for unique educational materials to accompany such products. Findings also highlight the need for participatory approaches between public health, condom manufacturers, and the retail industry to integrate fitted products into our work successfully.
本研究比较了标准尺寸避孕套与根据男性阴茎长度和周长定制的避孕套的失败率,并评估了使用者对两种避孕套可接受性的看法以及对其有效性的信心。
采用基于互联网的每日日记的实验性交叉设计,820名至少使用过每种类型避孕套各一个的男性报告了他们作为插入方在阴道性交和肛交过程中使用避孕套的结果和看法。
定制避孕套的破损率(0.7%)显著低于标准尺寸避孕套(1.4%)。按阴茎尺寸评估,在肛交过程中,中等周长类别(12 - 13厘米)的男性中,定制避孕套的破损率显著低于标准尺寸避孕套(1.2%对5.6%);在阴道性交过程中,大周长类别(≥14厘米)的男性中,定制避孕套的破损率显著低于标准尺寸避孕套(0.6%对2.6%);在阴道性交和肛交过程中,长阴茎长度类别(≥16厘米)的男性中,定制避孕套的破损率也显著低于标准尺寸避孕套(阴道性交为0.5%对2.5%,肛交为3.0%对9.8%)。在中等阴茎长度(1.9%对0.9%)和周长(2.2%对0.7%)类别的男性中,阴道性交后取出时,定制避孕套发生滑落的情况更多。
定制避孕套对于性传播感染的预防工作可能具有重要价值,特别是对于阴茎尺寸较大的男性。定制避孕套在一些男性中滑落情况更多,这表明需要为这类产品提供独特的教育材料。研究结果还强调了公共卫生、避孕套制造商和零售业之间采用参与式方法,以便成功地将定制产品纳入我们工作的必要性。