Background Online contraception services increasingly provide information, clinical assessment and home-delivered oral contraceptives (OCs). Evidence is lacking on the effects of online contraceptive service use on short-term contraceptive continuation. Methods Cohort study comparing contraceptive continuation between new users of a free-to-access online OC service in South East London with those from other, face-to-face services in the same area. Online questionnaires collected data on participants’ sociodemographic characteristics, motivations for OC access, service ratings, OC knowledge and contraceptive use. Contraceptive use in the 4-month study period was measured using health service records. Unadjusted and multivariable logistic regression models compared outcomes between the online service group and those using other services. Results Online service-users (n=138) were more likely to experience short-term continuation of OCs compared with participants using other services (n=98) after adjusting for sociodemographic and other characteristics (adjusted OR 2.94, 95% CI 1.52 to 5.70). Online service-users rated their service more highly (mean 25.22, SD 3.77) than the other services group (mean 22.70, SD 4.35; p<0.001), valuing convenience and speed of access. Among progestogen-only pill users, knowledge scores were higher for the online group (mean 4.83, SD 1.90) than the other services group (mean 3.87, SD 1.73; p=0.007). Among combined oral contraceptive users, knowledge scores were similar between groups. Conclusions Free-to-access, online contraception has the potential to improve short-term continuation of OCs. Further research using a larger study population and analysis of longer-term outcomes are required to understand the impact of online services on unintended pregnancy. Data are available upon reasonable request. The study data are available upon reasonable request. Requests for access should be addressed to the corresponding author at emma.rezel-potts@kcl.ac.uk.

中文翻译：

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个人避孕在线 (CiP-CO) 队列研究中的避孕

背景 在线避孕服务越来越多地提供信息、临床评估和家庭提供的口服避孕药 (OC)。缺乏证据表明在线避孕服务使用对短期避孕持续的影响。方法 队列研究比较了伦敦东南部免费在线 OC 服务的新用户与同一地区其他面对面服务的新用户之间的避孕持续情况。在线问卷收集了参与者的社会人口学特征、访问 OC 的动机、服务评级、OC 知识和避孕药具使用的数据。使用健康服务记录测量 4 个月研究期间的避孕药具使用情况。未经调整的多变量逻辑回归模型比较了在线服务组和使用其他服务的结果。结果 在线服务用户（n=138）与使用其他服务的参与者（n=98）相比，在调整社会人口学和其他特征（调整后的 OR 2.94，95% CI 1.52 至 5.70）后，更有可能经历短期继续 OCs ）。在线服务用户对他们的服务的评价更高（平均 25.22，标准差 3.77）高于其他服务组（平均 22.70，标准差 4.35；p<0.001），重视访问的便利性和速度。在仅使用孕激素药丸的用户中，在线组的知识分数（平均 4.83，SD 1.90）高于其他服务组（平均 3.87，SD 1.73；p=0.007）。在联合口服避孕药使用者中，各组之间的知识分数相似。结论 免费获取的在线避孕有可能改善 OC 的短期持续使用。需要使用更大的研究人群进行进一步的研究并分析长期结果，以了解在线服务对意外怀孕的影响。可根据合理要求提供数据。研究数据可根据合理要求提供。访问请求应发送至 emma.rezel-potts@kcl.ac.uk 的通讯作者。