An interactive website for informed contraception choice: randomised evaluation of

objectiveImproving use of effective contraception to prevent unintended pregnancy is a global priority, but misperceptions and concerns about contraception are common. Our objective was to evaluate an interactive website to aid informed choice of contraception.

methodsThe

findingsThere was no significant difference between intervention and control groups in the proportion of women using LARC [30.4% intervention

interpretationThe RESEARCH IN CONTEXT: Preventing unintended pregnancy through effective use of contraception is essential for women's health, but choosing between different contraceptive methods can be challenging, and the opportunity for adequate discussion during routine consultations is often constrained. EVIDENCE BEFORE THIS STUDY: We conducted two systematic literature reviews: 1) Factors influencing contraception choice, uptake and use: a meta-synthesis of systematic reviews; and 2) Effectiveness of interactive digital interventions (IDI) for contraception choice, uptake and use. For the first review we searched PubMed, CDSR, Epistemonikos, DoPHER, DARE, NHS Economic Evaluation Database, Campbell Library, NIHR Health Technology Assessment, and Health Evidence Canada databases for systematic reviews which addressed contraceptive choice, uptake or use, from 2000 to 2017. PROSPERO registration number: CRD42017081521 https://www.crd.york.ac.uk/PROSPERO/display_record.php?RecordID=81521. We synthesised the findings of 18 systematic reviews of mostly moderate or high quality. They highlighted the importance of women's knowledge, beliefs, perceptions of side effects and health risks, as well as relationship status, social network, economic and healthcare factors on contraception choice and use. For the second review, we searched 23 electronic databases, trials registers and reference lists for randomised controlled trials of IDI for contraception, including CENTRAL, MEDLINE, EMBASE, CINAHL, ERIC, ASSIA and PsycINFO, from start date to June 2017. PROSPERO registration number: CRD42017081636. We found only five randomised trials of IDI, all from the USA. Risk of bias prevented synthesis of results. www.crd.york.ac.uk/PROSPERO/display_record.php?RecordID=81636. ADDED VALUE OF THIS STUDY: Women's common concerns about contraception - fear of hormones, weight gain, cancer, infertility, mood changes, breaks from contraception and changes in bleeding patterns - underpinned development of a new interactive website (www.contraceptionchoices.org). IMPLICATIONS OF ALL THE AVAILABLE EVIDENCE: Interactive digital interventions (websites) can aid contraception choice, but other intervention research is needed to address wider influences on unintended pregnancy, including partner views, friends, family, the media, wider society and experiences with healthcare professionals. Future research could examine the impact of the website in different settings, e.g. schools or different countries. We hypothesise that use of the website during contraceptive consultations might improve the efficiency or quality of consultation, for both patients and healthcare providers. Appropriate methodology and time-scale for evaluating digital health interventions remains a key question.