Background/Objectives: Comprehensive sexual education and access to contraceptives play a vital role in alleviating the economic, health, and social challenges associated with unplanned pregnancies in adolescents. According to the World Health Organization (WHO), adolescence refers to the transitional stage from childhood to adulthood, encompassing individuals aged 10 to 19. This period is critical for reproductive decision making, making it essential to closely observe patterns of sexual activity and contraceptive use among young people. Despite advancements, many adolescents still encounter significant barriers to accessing and effectively utilizing contraceptive methods. Methods: A bibliographic search was performed across three major biomedical databases: PubMed, Embase, and CINAHL. The research question was developed utilizing the PIO (Population, Intervention, Outcome) framework to guide the investigation. Results: Long-acting reversible contraceptives (LARCs), including the etonogestrel (ENG) implant, have been recognized for their ability to significantly reduce maternal and neonatal mortality and morbidity as well as decrease the incidence of unsafe abortions. Conclusions: Access to adequate counseling and effective contraceptive services can profoundly impact young people's lives, preventing unplanned pregnancies and promoting optimal sexual and reproductive health.

Despite youth's shift from Facebook to Instagram, the literature on how to use Instagram to recruit youth for clinical trials is scant. This paper reports procedures and comparative metrics on the use of Facebook and Instagram to recruit a nationwide sample (N = 1216) of LGBQ youth, aged 15 and 16 years, for an online drug abuse prevention trial.

Our recruitment campaign used ads on Facebook and promoted posts on Instagram. Ads and posts shared common images, headlines, and captions. Ads and posts directed youth to a study recruitment website for informed consent and enrollment procedures.

Our campaign ran for 48 non-consecutive days, yielded N = 1216 participants, had a total cost of $25,400.31, and an average cost per participant of $20.89. Facebook ads and Instagram promoted posts ran for a similar number of days. However, compared to Instagram, Facebook ads cost more than twice as much (115 %), had 51 % fewer clicks, and had an average cost-per-click that was 338 % higher. Furthermore, despite being shown to users more than 4 times as often and garnering more than twice as many unique views, Facebook ads had a click-through-rate that was 90 % lower than Instagram promoted posts.

Instagram promoted posts outperformed ads on Facebook by driving more potential participants to the study recruitment website and for less money.

It may be challenging for researchers to recruit enough participants to have a diverse and representative sample for their studies. Usual recruitment methods that were historically effective can be difficult to use because of high costs, time constraints and geographical limitations. Social media is a low-cost, time-saving alternative.

To summarise the benefits and challenges of using social media for recruitment.

This article provides an overview of social media. It considers the advantages of social media for recruitment, including its cost-effectiveness, accessibility, speed and potential exposure for researchers. It also discusses the challenges of using social media for recruitment, including ethical ambiguity, homogenous sampling and questionable validity of information gathered.

Using social media for research saves time and reduces costs, increasing access to hard-to-reach populations and the reach of recruitment efforts.

Options for researchers wishing to use social media for study recruitment are outlined, as are strategies for managing some of the challenges involved in this recruitment method.

Objective This study aimed to quantify the effect of social media posts on study enrollment among children with mild coronavirus disease 2019 (COVID-19). Methods The primary outcome was weekly study enrollments analyzed using a run chart. A secondary analysis used linear regression to assess study enrollments two days before and after a social media post, adjusted for the statewide pediatric seven-day-average severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) case rate, social media posting day, and the interaction of these two variables. Results In seven months before social media posting, only eight patients were enrolled. One week after social media posting began, the median weekly enrollment increased (0 to 3). In the regression model, neither social media post day nor the pediatric SARS-CoV-2 case rate was significantly associated with enrollment rate. However, the interaction of a post day and the pediatric case rate was significant. Conclusion Social media posts significantly increased enrollment among children with mild COVID-19 in a prospective study. This effect was amplified by the presence of high community case rates during the Omicron wave.

Online surveys can align with youth's increased use of the internet and can be a mechanism for expanding youth participation in research. This is particularly important during the coronavirus disease 2019 (COVID-19) pandemic, when in-person interactions are limited. However, the advantages and drawbacks of online systems used for research need to be carefully considered before utilizing such methodologies.

To describe and discuss the strengths and limitations of an online system developed to recruit adolescent girls for a sexual health research study and conduct a three-month follow up survey.

This methodology paper examines the use of an online system to recruit and follow participants three months after their medical visit to evaluate a mobile sexual and reproductive health application, Health-E You/Salud iTuTM, for adolescent girls attending school-based health centers (SBHCs) across the United States. SBHC staff gave adolescent girls a web link to an online eligibility and consent survey. Participants were then asked to complete two online surveys (baseline and 3-month follow-up). Surveys, reminders, and incentives to complete them were distributed through short message service (SMS) text messages. Upon completing each survey, participants were also sent an email with a link to an electronic gift card as a thank-you for their participation. Barriers to implementing this system were discussed with clinicians and staff at each participating SBHC.

This online recruitment and retention system enabled participant recruitment at 26 different SBHCs in seven states across the United States. Between September 2021 and June 2022, 415 adolescent girls were screened using the Qualtrics online survey platform, and 182 were eligible to participate. Of those eligible, 78.0% (n = 142) completed the baseline survey. Participants were racially, geographically, and linguistically diverse. Most of the participants (89.4%) were non-White, and 40.8% spoke Spanish. A total of 62.0% (n = 88) completed the 3-month follow-up survey. Limitations of this system included reliance on internet access (via Wi-Fi or cell service), which was not universally available or reliable. In addition, an individual unrelated to the study obtained the survey link, filled out multiple surveys, and received multiple gift cards before the research team discovered and stopped this activity. As a result, additional security protocols were instituted.

Online systems for health research can increase the reach and diversity of study participants, reduce costs for research personnel time and travel, allow for continued study operation when in-person visits are limited (such as during the COVID-19 pandemic), and connect youth with research using technology. However, there are challenges and limitations to online systems, which include limited internet access, intermittent internet connection, data security concerns, and the potential for fraudulent users. These challenges should be considered prior to using online systems for research.

Recruitment of study participants is challenging and can incur significant costs. Social media advertising is a promising method for recruiting clinical studies and may improve cost efficiency by targeting populations likely to match a study's qualifications. Prior systematic reviews of social media as a recruitment tool have been favourable, however, there are no meta-analyses of its cost-effectiveness.

Studies evaluating recruitment costs through social media and non-social media methods were identified on MEDLINE and EMBASE. Articles were screened through a two-step process in accordance with PRISMA guidelines. Cost data were extracted from selected articles and meta-analyzed using the Mantel-Haenszel method. The primary outcome was the relative cost-effectiveness of social media compared to non-social media recruitment, defined as the odds ratio of recruiting a participant per US dollar spent. The secondary outcome was the cost-effectiveness of social media recruitment compared to other online recruitment methods only.

In total, 23 studies were included in the meta-analysis. The odds ratio of recruiting a participant through social media advertising compared to non-social media methods per dollar spent was 1.97 [95% CI 1.24-3.00, P = 0.004]. The odds ratio of recruiting a participant through social media compared to other online methods only was 1.66 [95% CI 1.02-2.72, P = 0.04].

Social media advertising may be more cost-effective than other methods of recruitment, however, the magnitude of cost-effectiveness is highly variable between studies. There are limited data on newer social media platforms and on difficult-to-reach populations such as non-English speakers or older individuals.

Social media tools have provided health researchers with the opportunity to engage with communities and groups in a nonconventional manner to recruit participants for health research. Using social media to advertise research opportunities and recruit participants facilitates accessibility to participants from broad geographical areas and diverse populations. However, little guidance is provided by ethics review boards for researchers to effectively use this recruitment method in their research.

This study sought to explore the literature on the use of social media for participant recruitment for research studies and identify the best practices for recruiting participants using this method.

An integrative review approach was used to synthesize the literature. A total of 5 health sciences databases, namely, EMBASE (Ovid), MEDLINE (Ovid and EBSCOhost), PsycINFO (Ovid), Scopus (Elsevier), and CINAHL Plus with Full Text (EBSCOhost), were searched using predefined keywords and inclusion and exclusion criteria. The initial search was conducted in October 2020 and was updated in February 2022. Descriptive and content analyses were applied to synthesize the results, and the findings are presented in a narrative and tabular format.

A total of 96 records were included in this review, 83 (86%) from the initial search and 13 (14%) from the updated search. The publication year ranged between 2011 and 2022, with most publications (63/96, 66%) being from the United States. Regarding recruitment strategy, 45% (43/96) of the studies exclusively used social media, whereas 51% (49/96) used social media in conjunction with other strategies. The remaining 4% (4/96) provided guidelines and recommendations for social media recruitment. Notably, 38% (36/96) of these studies involved hard-to-reach populations. The findings also revealed that the use of social media is a cost-effective and efficient strategy for recruiting research participants. Despite the expanded use across different populations, there is limited participation of older adults in social media recruitment.

This review provides important insights into the current use of social media for health research participant recruitment. Ethics boards and research support services in academic institutions are encouraged to explicitly provide researchers with guidelines on the use of social media for health research participant recruitment. A preliminary guideline prepared based on the findings of this review is proposed to spark further development in this area.

To improve teen contraceptive use, the SpeakOut intervention combines structured counseling, online resources, and text reminders to encourage teens to share their experiences using intrauterine contraception (IUC) or an implant with peers.

To evaluate the effectiveness of remote delivery of the SpeakOut intervention in increasing teen contraceptive use, we conducted a cluster randomized trial involving female adolescents who were recruited online. Primary participants (n = 520) were randomly assigned to receive SpeakOut or an attention control; each primary participant recruited a cluster of up to 5 female peers as secondary participants (n = 581). We assessed contraceptive communication, knowledge, and use, at baseline, 3 and 9 months after participants enrolled. We examined differences between study groups, controlling for clustering by primary participant and baseline characteristics.

The trial's primary outcome, contraceptive use by secondary participants, was similar between groups at both 3 and 9 months postintervention. Compared to controls, primary participants receiving SpeakOut tended to be less likely to discontinue contraception within 9 months (4.8% vs 7.8%, p = 0.11 for IUC; 7.8% vs 9.8%, p = 0.45 for implants), but this did not reach statistical significance. SpeakOut failed to increase contraceptive communication; regardless of study group, most secondary participants reported peer communication about contraception (86% vs 88%, p = 0.57). Most secondary participants were aware of the hormonal IUC (91.4% vs 90.4%, p = 0.72), copper IUC (92.9% vs 88.6%, p = 0.13), and implant (96.5% vs 96.1%, p = 0.83) 3 months after enrolling, regardless of the intervention their primary participant received. However, contraceptive knowledge remained incomplete in all study groups.

Remote delivery of the SpeakOutintervention did not improve contraceptive communication, knowledge or use among participating teens or their peers.

Efforts to support teen-to-teen contraceptive communication and ensure that teens have accurate information about the full range of contraceptive methods, including highly effective reversible contraceptives, require refinement.