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OBJECTIVE: This article assesses the comparability of contraceptive use estimates for adult women obtained from the 2002 Behavioral Risk Factor Surveillance System (BRFSS), using the 2002 National Survey of Family Growth (NSFG) as a benchmark. The 2002 BRFSS uses data collection methods that are considerably different from the NSFG. METHOD: We compared demographic differences and national estimates of current contraceptive methods being used and reasons for nonuse. Variables were recoded in the BRFSS and NSFG systems to make the two samples comparable. RESULTS: Women in the NSFG and BRFSS were similar in age and race/ethnicity. Compared with the NSFG, the BRFSS sample was more educated and of higher income, less likely to be cohabiting, and more likely to be married. After adjusting for differences in the coding of hysterectomy, many BRFSS estimates for current contraceptive use were statistically similar to those from the NSFG. Small but statistically significant differences were found for vasectomy (7.7% and 6.3%), the pill (21.9% and 19.6%), rhythm (1.5% and 1.0%), the diaphragm (0.5% and 0.2%), and withdrawal (0.3% and 2.7%) for the BRFSS and NSFG, respectively. Major reasons for nonuse were similar: seeking pregnancy and currently pregnant. The percentage of women who were not currently sexually active was higher in the BRFSS (16.0%) compared with the NSFG (12.5%). CONCLUSIONS: The BRFSS is a useful source of population-based data on contraceptive use for reproductive health program planning; however, planners should be cognizant that lower-income women are not fully represented in telephone surveys. [ABSTRACT FROM AUTHOR]

Background: The United Nations' Sustainable Development Goals identify universal access to sexual and reproductive health services as a global priority. Yet barriers to abortion access remain, including legal restrictions, cost, stigma, and limited services and information. The aim was to identify barriers to and facilitators of abortion care access experienced in Australia., Methods: This qualitative phenomenological study examined abortion access in Australia, where abortion is decriminalised, from March 2020 to December 2022. We used social media and flyers in clinics to recruit adults who had sought abortion care, then interviewed them in-depth. We mapped participant experiences to five dimensions of access identified by Levesque et al.'s patient-centred access to healthcare framework: approachability, acceptability, availability and accommodation, affordability, and appropriateness., Results: The 24 participants lived across Australia and sought abortion during the COVID-19 pandemic. Approachability: Before seeking abortion, most did not know where to access information about the service and where to obtain it. Acceptability: Many were uncomfortable disclosing their abortion to family or friends; they reported that healthcare providers demonstrated varying levels of support. Availability and accommodation: Regional participants travelled far and faced long wait-times, exacerbated by pandemic restrictions. Affordability: Participants described financial stress paying for the service, travel, and related expenses. Appropriateness: Most participants expected judgemental care. Experiences varied widely: many participants experienced unempathetic, rushed, or judgemental interactions with healthcare staff, and many also reported at least one non-judgmental and supportive interaction on the same pathway to care., Discussion: Abortion seekers experienced varying obstacles when seeking care. The findings illustrate the need for population- and system-level initiatives such as: providing accurate information about and normalising abortion; implementing system-level strategies to reduce wait times, travel, and costs, especially for rural populations; and developing regulatory and quality improvement initiatives to increase the workforce and its readiness to provide high-quality, non-judgemental abortion care. Challenges seeking care during pandemic restrictions illustrate the importance of social support during care and choice between abortion modalities and service types. Consumer voices can help understand the diverse pathways to abortion care and inform solutions to overcome the multidimensional barriers to access., (© 2024. The Author(s).)

As abortion restrictions expand in the USA, pregnant people will continue to experience delays and be forced to travel for abortion. The study aims to describe later abortion travel experiences, understand structural factors influencing travel, and identify strategies to improve travel. This qualitative phenomenological study analyses data from 19 interviews with people who travelled at least 25 miles for abortion after the first trimester. Framework analysis used a structural violence lens. More than two-thirds of participants travelled interstate, and half received abortion fund support. Key considerations of travel include logistics, challenges during the journey, and physical and emotional recovery during and after travel. Restrictive laws, financial insecurity and anti-abortion infrastructure are forms of structural violence that created challenges and delays. Reliance on abortion funds facilitated access but also entailed uncertainty. Better resourced abortion funds could organise travel in advance, facilitate the travel of accompanying escorts, and tailor emotional support to reduce stress for those travelling. Clinical and practical support systems must be prepared to support people travelling for abortion, as later abortion and forced travel is increasing since the constitutional right to abortion in the USA was overturned. Findings can inform interventions to support the increasing number of people travelling for abortion.

Background: Abortion stigma involves the stereotyping of, discrimination against, and delegitimization of those who seek and provide abortion. Experiences of abortion care are shaped by stigma at the meso (e.g., lack of local providers) and macro (e.g., abortion regulations) levels. Yet abortion stigma and quality of care are often examined separately. This study sought to articulate the impact of abortion stigma on quality of care in the context of healthcare interactions. It did so by characterizing the features of stigmatizing and non-stigmatizing care in the context of macro-level stigma and other structural factors that influence abortion-seeking experiences, including the coronavirus pandemic's influence on the health system., Methods: This qualitative study comprised in-depth interviews with people who sought abortion across Australia between March 2020 and November 2022, recruited through social media and flyers in clinics. Thematic analysis drew on concepts of micro, meso, and macro stigma and person-centered care. We developed typologies of the interactions between abortion seekers and healthcare workers by analytically grouping together negative and positive experiences to characterize features of stigmatizing and and non-stigmatizing care in the context of macro-level influences., Results: We interviewed 24 abortion seekers and developed five typologies of stigmatizing care: creating barriers; judging; ignoring emotional and information needs; making assumptions; and minimizing interactions. There are five corresponding positive typologies. Macro-level factors, from abortion regulations to rural and pandemic-related health system pressures, contributed to poor experiences in care., Conclusions: The positive experiences in this study illustrate how a lack of stigma enables patient-centered care. The negative experiences reflect the interrelationship between stigmatizing beliefs among healthcare workers, macro-level (policy and regulatory) abortion stigma, and structural health service limitations exacerbated during the pandemic. Interventions are needed to reduce stigmatizing interactions between abortion seekers and healthcare workers, and should also consider macro-level factors that influence the behaviors of healthcare workers and experiences of abortion seekers. Without addressing stigma at multiple levels, equitable access to high-quality abortion care will be difficult to achieve. Efforts to integrate stigma reduction into quality improvement have relevance for maternal and reproductive health services globally., (© 2023. BioMed Central Ltd., part of Springer Nature.)

Introduction: Natural hazards are damaging environmental events, such as fires, droughts and floods, which have negative impacts on human lives, livelihoods and health. Natural hazards are increasing in intensity and severity, and may potentially have harmful effects on the health and development of children who experience them. There are few syntheses of the evidence about the effects of natural hazards on the early development of children aged from birth to 5 years old. The aim of this systematic review and meta-analysis is to determine the impact of natural hazards on the cognitive, motor, language, social and emotional development of children from birth to 5 years old., Methods and Analysis: Comprehensive searches will be conducted in five bibliographic databases: Ovid MEDLINE, Ovid PsycInfo, CINAHL Plus, Scopus and Ovid EMBASE, using predefined search terms to identify the relevant studies. The review will follow the Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) guidelines. Eligible studies will be included if they report on the association between exposure to natural hazards and at least one indicator of early childhood development (ECD). Extracted data will include: main study findings, characteristics of the study design, measures of natural hazards and ECD indicators. Observational studies with cross-sectional, case-control, prospective or retrospective cohort designs will be included in this review. Case descriptions and qualitative studies will be excluded. Study quality will be assessed using the Joanna Brigg's Institute critical appraisal tools. We will conduct a meta-analysis if the reviewed studies are sufficiently homogeneous according to research design, exposure, participants and outcome measures. The meta-analysis will include subgroup analyses (eg, length of exposure to natural hazard, type of natural hazard, ECD indicator)., Ethics and Dissemination: The findings will be disseminated through a peer-review publication, policy brief, technical report and report published on institutional stakeholder websites., Prospero Registration Number: CRD42022331621., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2023. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)

Natural hazards are increasing because of climate change, and they disproportionately affect vulnerable populations. Prior reviews of the mental health consequences of natural hazard events have not focused on the particular experiences of vulnerable groups. Based on the expected increase in fires and droughts in the coming years, the aim of this systematic review is to synthesize the global evidence about the mental health of vulnerable populations after experiencing natural hazards. We searched databases such as Ovid MEDLINE, EMBASE, CINAHL and Ovid PsycInfo using a systematic strategy, which yielded 3,401 publications. We identified 18 eligible studies conducted in five different countries with 15,959 participants. The most common vulnerabilities were living in a rural area, occupying a low socioeconomic position, being a member of an ethnic minority and having a medical condition. Common experiences reported by vulnerable individuals affected by drought included worry, hopelessness, isolation and suicidal thoughts and behaviors. Those affected by fire reported experiencing posttraumatic stress disorder (PTSD) and anger. These mental health problems exacerbated existing health and socioeconomic challenges. The evidence base about mental health in vulnerable communities affected by natural hazards can be improved by including standardized measures and comparison groups, examining the role of intersectional vulnerabilities, and disaggregating data routinely to allow for analyses of the particular experiences of vulnerable communities. Such efforts will help ensure that programs are informed by an understanding of the unique needs of these communities., Competing Interests: The authors declare none., (© The Author(s) 2023.)

Introduction: Exposure to natural hazards such as fire, drought, floods, and earthquakes can have negative impacts on physical and mental health and wellbeing. The social and structural factors contributing to individual and community vulnerability also influence responses to disaster and the resulting consequences on health and wellbeing. Experiencing disasters like bushfires amplifies the impacts of inequality, magnifying existing disparities and contributing to additional psychological burdens of grief, trauma and adaptive challenge. There is a need to understand how vulnerability can influence responses to disaster, and to identify factors that develop and foster resilience in the context of increasing disasters and vulnerability., Materials and Methods: This protocol will describe the methodology of two scoping reviews: the first will describe the mental health outcomes of vulnerable populations after droughts and bushfires; the second will identify and describe strategies that promote community resilience in vulnerable populations in the context of a disaster. A thorough search will be conducted in relevant databases. Studies will be limited to English language. The reviews will be reported using the 22-item checklist for the Preferred Reporting Items for Systematic Reviews and Meta-Analyses. Methodological quality of the included papers will be assessed using the Joanna Briggs Institute's critical appraisal tools., Results & Conclusions: The two scoping reviews described in this protocol will have broad relevance in the context of increasing and intensifying disasters, and will especially consider the compounded impact of disaster on vulnerable communities. Findings will contribute directly to the design and implementation of solutions to improve post-disaster health and wellbeing and community resilience.

Introduction: The National Institute for Health and Care Excellence, the Royal College of Obstetricians and Gynaecologists and the World Health Organization recommend that services provide a choice between medical and surgical methods of abortion. We analysed qualitative study data to examine patient perspectives on abortion method choice and barriers to meeting them., Methods: In-depth interviews with 24 clients who had an abortion at British Pregnancy Advisory Service clinics were carried out between December 2018 and July 2019 to examine perspectives of quality of abortion care. In this article we focus on client perspectives on choice of abortion method. We performed thematic analysis of data relating to choice of abortion method, refined the analysis, interpreted the findings, and organised the data into themes., Results: Participants' preferences for abortion method were shaped by prior experience of abortion, accessibility and privacy, perceptions of risk and experiences of abortion method, and information gathering and counselling. Participants' ability to obtain their preferred method was impacted by intersecting constraints such as appointment availability, service location and gestational age., Conclusions: Our findings show that many factors shape participants' preferences for abortion method. In response to the COVID-19 pandemic, some abortion services have constrained abortion method choices, with an emphasis on medical abortion and 'no-touch' care. Providers in the UK and beyond should aim to restore and expand more treatment options when the situation allows., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2022. No commercial re-use. See rights and permissions. Published by BMJ.)

Gender is an important determinant of health, but explicit attention to gender is often missing in health promotion. We build on Pederson and colleagues' gender-transformative framework for health promotion to propose four guiding principles for gender-transformative health promotion. First, health promotion must address gender norms directly if it is to improve health outcomes. Second, it should move beyond individual change to engage explicitly with structural and social determinants of health. Third, it should address underlying gender-related determinants in order to influence health outcomes. And fourth, it requires complexity-informed design, implementation, and evaluation. We provide background on key concepts that are essential for designing, implementing, and evaluating gender-transformative health promotion: gender norms, socioecological approaches, and the gender system. We give examples of the four principles in practice, using the case of postnatal mental health promotion in Australia and sexuality education in Mexico. These four principles can be applied to health promotion efforts across contexts and outcomes to address the harmful gender norms that contribute to poor health as a part of broader efforts to improve health and well-being.

Background: Quality of care (QOC) is increasingly identified as an important contributor to healthcare outcomes, however little agreement exists on what constitutes quality in abortion care or the recommended indicators from the service-user perspective. Our study aimed to explore perceptions and experiences of abortion QOC in England and Wales., Methods: We performed in-depth interviews (via phone or in-person) with participants who had an abortion at a nationwide independent sector provider in the previous 6 months. We explored their experiences of the abortion service at each point in the care pathway, their perspectives on what contributed to and detracted from the experience meeting their definitions of quality, and their reflections on different aspects of QOC. We used content analysis to generate themes., Results: From December 2018 to July 2019, we conducted 24 interviews. Ten participants had a surgical and 14 had a medical abortion. Seventeen (71%) were treated in the first 12 weeks of pregnancy and 7 (29%) beyond that, with an average gestational age of 10 weeks + 5 days (range 5-23 + 6). We identified 4 major themes that contributed to participant's perception of high quality care: (1) interpersonal interactions with staff or other patients, (2) being informed and prepared, (3) participation and choices in care and (4) accessibility. Nearly all participants identified interpersonal interactions with staff as an important contributor to quality with positive interactions often cited as the best part of their abortion experience and negative interactions as the worst. For information and preparation, participant described not only the importance of being well prepared, but how incongruencies between information and the actual experience detracted from quality. Participants said that making choices about their care, for example, method of abortion, was a positive contributor. Finally, participants identified access to care, specifically in relation to waiting times and travel, as an important aspect of QOC., Conclusions: Participants situated quality in abortion care in 4 domains: interpersonal aspects of care, information and preparation, choices, and accessibility. Indicators identified can be used to develop standard metrics to ensure care meets service-user needs., (© 2021. The Author(s).)

Quality healthcare is a key part of people's right to health and dignity, yet access to high-quality care can be limited by legal, social and economic contexts. There is limited consensus on what domains constitute quality in abortion care and the opinions of people seeking abortion have little representation in current abortion quality measures. In this qualitative study, we conducted 45 interviews with abortion clients in Mumbai, India, and in Eldoret and Thika, Kenya, to assess experiences with abortion care, definitions of quality and priorities for high-quality abortion care. Among the many aspects of care that mattered to clients, the client-provider relationships emerged as essential. Clients prioritized being treated with kindness, respect and dignity; receiving information and counselling that was personalized to their individual situation and reassurance and support from their provider throughout the entire abortion process, including follow-up after the abortion. Many clients also noted the importance of skilled providers and appropriate care. There were similarities across the two country contexts, yet there were some differences in how clients defined high-quality care; therefore, specific political and cultural influences must be considered when implementing measurement and improving person-centred quality of care. These domains, particularly interpersonal interactions, should be prioritized in India and Kenya when health systems, facilities and providers design person-centred measures for quality in abortion care., (© The Author(s) 2021. Published by Oxford University Press in association with The London School of Hygiene and Tropical Medicine.)

Evaluating social change programs requires methods that account for changes in context, implementation, and participant experience. We present a case study of a school-based partner violence prevention program with young people, where we conducted 33 repeat interviews with nine participants during and after an intervention and analyzed participant trajectories. We show how repeat interviews conducted during and after a social change program were useful in helping us understand how the intervention worked by providing rich contextual information, elucidating gradual shifts among participants, and identifying aspects of the intervention that appear to influence change. Long-term effects of social change interventions are very hard to quantify or measure directly. We argue that a qualitative longitudinal approach provides a way to measure subtle changes that can serve as proxies for longer term impacts.

Background: The Individual-Level Abortion Stigma (ILAS) scale is a tool to measure multiple dimensions of stigma among people who have abortions. Despite use of the scale globally, little is known about participant experiences completing the scale. We assessed reactions to and experiences with the scale among women who obtained abortions in Mexico, exploring how the items made them feel about themselves and their abortion. Methods: We conducted 10 in-depth interviews with women approximately 6 months after their abortion. We explored experiences answering the ILAS overall as well as each sub-scale (self-judgement; worries about judgement; isolation; community condemnation). We used thematic analysis to examine overall experiences with the ILAS and framework analysis to summarize responses by sub-scale. Results: Many respondents reported positive experiences responding to the scale or said it served a therapeutic purpose. Other participants said the scale caused strong or mixed emotions or generated doubts. Women generally described mixed and negative reactions to the "worries about judgement" and "community condemnation" sub-scales, and more neutral or positive reactions to the "isolation" and "self judgement" sub-scales. Nearly all respondents hypothesized that completing the ILAS at the time of their abortion would be more difficult than responding months after their abortion. Conclusions: People can experience both positive and negative effects when responding to abortion stigma scales. Use of the scales may cause discomfort and introduce concepts that further perpetuate stigma. This study highlights the importance of carefully considering when it is appropriate to implement the scale and exploring safeguards for participants., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2021 Wollum, Makleff and Baum.)

Despite calls for evaluation practice to take a complex systems approach, there are few examples of how to incorporate complexity into real-life evaluations. This article presents the case for using a complex systems approach to evaluate a school-based intimate partner violence-prevention intervention. We conducted a post hoc analysis of qualitative evaluation data to examine the intervention as a potential system disruptor. We analysed data in relation to complexity concepts particularly relevant to schools: 'diverse and dynamic agents', 'interaction', 'unpredictability', 'emergence' and 'context dependency'. The data-two focus groups with facilitators and 33 repeat interviews with 14-17-year-old students-came from an evaluation of a comprehensive sexuality education intervention in Mexico City, which serves as a case study for this analysis. The findings demonstrate an application of complex adaptive systems concepts to qualitative evaluation data. We provide examples of how this approach can shed light on the ways in which interpersonal interactions, group dynamics, the core messages of the course and context influenced the implementation and outcomes of this intervention. This gender-transformative intervention appeared to disrupt pervasive gender norms and reshape beliefs about how to engage in relationships. An intervention comprises multiple dynamic and interacting elements, all of which are unlikely to be consistent across implementation settings. Applying complexity concepts to our analysis added value by helping reframe implementation-related data to focus on how the 'social' aspects of complexity influenced the intervention. Without examining both individual and group processes, evaluations may miss key insights about how the intervention generates change, for whom, and how it interacts with its context. A social complex adaptive systems approach is well-suited to the evaluation of gender-transformative interventions and can help identify how such interventions disrupt the complex social systems in which they are implemented to address intractable societal problems., (© The Author(s) 2020. Published by Oxford University Press in association with The London School of Hygiene and Tropical Medicine.)

Despite liberalised abortion laws in Colombia and Mexico City, ongoing abortion-related stigma and lack of knowledge of abortion laws can impede access to care. Organisations offering abortion services may support women seeking services by providing counselling and information. We conducted 30 in-depth interviews with women in Colombia and Mexico City after their abortion to understand their feelings of stigma, fears and concerns before accessing services, and how abortion counselling addressed those concerns. Women in both regions cited concerns about abortion safety, fears of judgement from community members and some reported self-judgement or guilt. Before arriving to care, women in Colombia were unsure if they qualified for legal abortion under the current law, and many reported fearing legal or social repercussions for seeking an abortion, whereas women in Mexico knew they could access a legal abortion in Mexico City. Women in all clinics reported satisfaction with the counselling services and felt most of their concerns were addressed. However, most women said they continued to fear judgement from members of the community after their procedure. Service-delivery organisations can provide supportive services and decrease women's fears and concerns, although interventions in communities are also needed to reduce stigma and improve information.

Background: The abortion law in Uruguay changed in 2012 to allow first trimester abortion on request. Implementation of the law in Uruguay has been lauded, but barriers to care, including abortion stigma, remain. This study aimed to assess women's experiences seeking abortion services and related attitudes and knowledge following implementation of the law in Uruguay., Methods: We interviewed 207 eligible women seeking abortion services at a high-volume public hospital in Montevideo in 2014. We generated univariate frequencies to describe women's experiences in care. We conducted regression analysis to examine variations in experiences of stigma by women's age and number of abortions., Results: Most of the women felt that abortion was a right, were satisfied with the services they received, and agreed with the abortion law. However, 70% found the five-day waiting period unnecessary. Women experienced greater self-judgement than worries about being judged by others. Younger women in the sample (ages 18-21) reported being more worried about judgment than women 22 years or older (1.02 vs. 0.71 on the ILAS sub-scale). One quarter of participants reported feeling judged while obtaining services. Women with more than one abortion had nearly three times the odds of reporting feeling judged., Conclusions: These findings highlight the need to address abortion stigma even after the law is changed. Some considerations from Uruguay that may be relevant to other jurisdictions reforming abortion laws include: the need for strategies to reduce judgmental behavior from staff and clinicians towards women seeking abortions, including training in counseling skills and empathic communication; addressing stigmatizing attitudes about abortion through community outreach or communications campaigns; mitigating the potential stigma that may be perpetuated through policies to prevent "repeat" abortions; ensuring that younger women and those with more than one abortion feel welcome and are not mistreated during care; and assessing the necessity of a waiting period. The rapid implementation of legal, voluntary abortion services in Uruguay can serve in many ways as an exemplar, and these findings may inform the process of abortion law reform in other countries.

Abortion is a common and essential component of sexual and reproductive health care, yet social norms and stigma influence women's decision-making and create barriers to safe abortion care. This qualitative study in Kenya and India explores abortion-related fears, expectations and perceptions of stigma among women who have obtained abortion services. In 2017, we conducted 34 semi-structured interviews and 2 focus groups with women who had obtained abortion services in Maharashtra state in India and Thika and Eldoret in Kenya. Thematic analysis was informed by the individual-level abortion stigma framework and theory of normative conduct. We aimed to learn about the diversity of women's experiences, analysing pooled data from the two countries. Most participants reported that before seeking abortion they had little prior knowledge about the service, expected to be judged during care, and feared the service would be ineffective or have negative health consequences. Many reported that community members disapprove of abortion and that a woman's age or marital status could exacerbate judgement. Some reported limiting disclosure of their abortion to avoid judgement. Negative stories, the secrecy around abortion, perceived stigma, social norms, and fear of sanctions all contributed to women's fears and low expectations. These findings elucidate the relationship between social norms and stigma and how expectations and concerns affect women's experiences seeking care. The results have implications for practice, with potential to inform improvements to services and help organisations address stigma as a barrier to care. This may be particularly relevant for younger or unmarried women.

Background: Unintended pregnancies can result in poorer health outcomes for women, children and families. Young people in low and middle income countries are at particular risk of unintended pregnancies and could benefit from innovative contraceptive interventions. There is growing evidence that interventions delivered by mobile phone can be effective in improving a range of health behaviours. This paper describes the development of a contraceptive behavioural intervention delivered by mobile phone for young people in Tajikistan, Bolivia and Palestine, where unmet need for contraception is high among this group., Methods: Guided by Intervention Mapping, the following steps contributed to the development of the interventions: (1) needs assessment; (2) specifying behavioural change to result from the intervention; (3) selecting behaviour change methods to include in the intervention; (4) producing and refining the intervention content., Results: The results of the needs assessment produced similar interventions across the countries. The interventions consist of short daily messages delivered over 4 months (delivered by text messaging in Palestine and mobile phone application instant messages in Bolivia and Tajikistan). The messages provide information about contraception, target attitudes that are barriers to contraceptive uptake and support young people in feeling that they can influence their reproductive health. The interventions each contain the same ten behaviour change methods, adapted for delivery by mobile phone., Conclusions: The development resulted in a well-specified, theory-based intervention, tailored to each country. It is feasible to develop an intervention delivered by mobile phone for young people in resource-limited settings.

Background: Unintended pregnancy is associated with numerous poorer health outcomes for both women and their children. Fulfilling unmet need for contraception is essential in avoiding unintended pregnancies, yet millions of women in low- and middle-income countries continue to face obstacles in realizing their fertility desires. In Bolivia, family planning progress has improved in recent decades but lags behind other countries in the region. Unmet need for contraception among women aged 15 to 19 years is estimated to be 38%, with the adolescent fertility rate at 70 per 1000 women. Mobile phones are an established and popular mode in which to deliver health behavior support. The London School of Hygiene & Tropical Medicine and the Centro de Investigación, Educación y Servicios in Bolivia have partnered to develop and evaluate a contraceptive behavioral intervention for Bolivian young women delivered by mobile phone. The intervention was developed guided by behavioral science and consists of short instant messages sent through an app over 4 months., Objective: The objective of this study is to evaluate the effect of the intervention on young women's use of and attitudes toward the most effective contraceptive methods., Methods: We will allocate 1310 women aged 16 to 24 years with an unmet need for contraception in a 1:1 ratio to receive the intervention messages or the control messages about trial participation. The messages are sent through the Tú decides app, which contains standard family planning information. Coprimary outcomes are use and acceptability of at least one effective contraceptive method, both measured at 4 months., Results: Recruitment commenced on March 1, 2017 and was completed on July 29, 2017. We estimate that the follow-up period will end in January 2018., Conclusions: This trial will evaluate the effect of the intervention on young women's use of and attitudes toward the (nonpermanent) effective contraception methods available in Bolivia., Trial Registration: ClinicalTrials.gov NCT02905526; https://clinicaltrials.gov/ct2/show/NCT02905526 (Archived by WebCite at http://www.webcitation.org/6vT0yIFfN)., (©Ona L McCarthy, Veronica Osorio Calderon, Shelly Makleff, Silvia Huaynoca, Baptiste Leurent, Phil Edwards, Jhonny Lopez Gallardo, Caroline Free. Originally published in JMIR Research Protocols (http://www.researchprotocols.org), 18.12.2017.)