Onscreen presence of instructors in video lectures affects learners' neural synchrony and visual attention during multimedia learning.

COVID-19 forced students to rely on online learning using multimedia tools, and multimedia learning continues to impact education beyond the pandemic. In this study, we combined behavioral, eye-tracking, and neuroimaging paradigms to identify multimedia learning processes and outcomes. College students viewed four video lectures including slides with either an onscreen human instructor, an animated instructor, or no onscreen instructor. Brain activity was recorded via fMRI, visual attention was recorded via eye-tracking, and learning outcome was assessed via post-tests. Onscreen presence of instructor, compared with no instructor presence, resulted in superior post-test performance, less visual attention on the slide, more synchronized eye movements during learning, and higher neural synchronization in cortical networks associated with socio-emotional processing and working memory. Individual variation in cognitive and socio-emotional abilities and intersubject neural synchronization revealed different levels of cognitive and socio-emotional processing in different learning conditions. The instructor-present condition evoked increased synchronization, likely reflecting extra processing demands in attentional control, working memory engagement, and socio-emotional processing. Although human instructors and animated instructors led to comparable learning outcomes, the effects were due to the dynamic interplay of information processing vs. attentional distraction. These findings reflect a benefit-cost trade-off where multimedia learning outcome is enhanced only when the cognitive benefits motivated by the social presence of onscreen instructor outweigh the cognitive costs brought about by concurrent attentional distraction unrelated to learning.

Evaluation of a community-informed multimedia intervention to increase PrEP awareness and intention among African American young adults.

Despite the benefits of pre-exposure prophylaxis (PrEP) in preventing HIV and its potential for reducing racial/ethnic HIV inequities, PrEP remains underutilized among African Americans who may benefit from it. Factors of PrEP uptake include awareness and acceptability of this prevention strategy among this group, yet few community-informed interventions have been developed and evaluated to address these challenges. Thus, this study evaluates the effectiveness of a community-informed, six-month multimedia campaign (print, digital media, internet radio, social media) for African American young adults (age 18-29) in Louisville, Kentucky to increase PrEP awareness and PrEP use intentions. Pretest surveys, posttest surveys, and digital analytic metrics were used to determine campaign effectiveness. Logistic regressions indicate increased PrEP awareness over time (p ≤ 0.0001) and greater PrEP intention among participants reporting greater campaign affinity (p ≤ 0.05). Campaign digital analytic performance was similar to or exceeded that of industry competitors (e.g., healthcare organizations). Findings indicate that a community-informed multimedia campaign increased PrEP use intentions among those exhibiting greater campaign affinity (the extent to which participants report a favorable view of the campaign) and demonstrated similar or greater effectiveness in digital elements as industry competitors at a cost-effective price. Future studies should incorporate community-engaged approaches in developing health communication products for greater PrEP acceptability and efficiency.Trial registration: ClinicalTrials.gov identifier: NCT0355959.

Multimedia Mercury Recovery from Coal-Fired Power Plants Utilizing N-Containing Conjugated Polymer Functionalized Fly Ash.

To recover multimedia mercury from coal-fired power plants, a novel N-containing conjugated polymer (polyaniline and polypyrrole) functionalized fly ash was prepared, which could continuously adsorb 99.2% of gaseous Hg0 at a high space velocity of 368,500 h-1 and nearly 100% of aqueous Hg2+ in the solution pH range of 2-12. The adsorption capacities of Hg0 and Hg2+ reach 1.62 and 101.36 mg/g, respectively. Such a kind of adsorbent has good environmental applicability, i.e. good resistance to coexisting O2/NO/SO2 and coexisting Na+/K+/Ca2+/Mg2+/SO42-. This adsorbent has very low specific resistances (6 × 106-5 × 109 Ω·cm) and thus can be easily collected by an electrostatic precipitator under low-voltage (0.1-0.8 kV). The Hg-saturated adsorbent can desorb almost 100% Hg under relatively low temperature (<250 °C). Characterization and theoretical calculations reveal that conjugated-N is the critical site for adsorbing both Hg0 and Hg2+ as well as activating chlorine. Gaseous Hg0 is oxidized and adsorbed in the form of HgXClX(ad), while aqueous Hg2+ is adsorbed to form a complex with conjugated-N, and parts of Hg2+ are reduced to Hg+ by conjugated-N. This adsorbent can be easily large-scale manufactured; thus, this novel solid waste functionalization method is promising to be applied in coal-fired power plants and other Hg-involving industrial scenes.

The Effects of Animations and Multimedia Messages on Public Engagement in Precision Medicine: Assessment of Moderation and Mediation.

Public participation in precision medicine (PM) research is essential to achieving effective health care but has been impeded by a lack of awareness and basic knowledge. There is a critical need for educational materials that can clearly explain PM to foster involvement. This randomized controlled trial with a posttest-only control group design aims to assess the effects of educational messages delivered through animations relative to live-action videos and leaflets on intentions of involvement in PM research. Knowledge as the moderator and four mediators (engagement, vividness, trustworthiness, and cognitive value) of the intended effects were also evaluated. A total of 326 U.S. adults were sampled from Amazon Mechanical Turk. Among participants with less knowledge about PM, animations produced stronger information-seeking intentions and willingness to participate than leaflets. The effects of three message modalities were not significantly different among average and highly knowledgeable participants. Engagement and vividness mediated the effects of animations relative to two other message modalities. Trustworthiness and cognitive value mediated the effects of animations relative to live-action videos. Overall, animations can be an effective communication strategy to motivate involvement in PM but its effectiveness could decline as knowledge increases. The explanations and implications of the findings were discussed.

Endoscopic pediatric endonasal retrieval of transorbital projectile: An illustrative multimedia report.

Air guns, particularly BB (ball-bearing or bullet ball) guns, have gained significant power and velocity over the last few decades. More than 145,000 pediatric patients suffered injuries attributed to air guns in the United States between 2001 and 2011, and approximately 22,000 pediatric emergency department visits are attributed to air gun-related injuries annually (Hyak et al., 2020 [1]). This study aims to describe an effective surgical technique in addressing maxillofacial injuries caused by BB gun projectiles in the pediatric population. We present a detailed surgical approach for endoscopic endonasal retrieval of a transorbital projectile in a 13-year-old male who sustained a maxillofacial BB gun injury, with the goal of restoring sinonasal function in a minimally invasive fashion.

Multimedia design for learner interest and achievement: a visual guide to pharmacology.

BACKGROUND: Medical education increasingly relies on digital learning materials. Despite recognition by the Association of American Medical Colleges Institute for Improving Medical Education, medical education design often fails to consider quality multimedia design principles. Further, the AAMC-IIME issued a call to study the role of design principles in medical education. Thus, the current study investigated the cognitive and affective effects of redesigning PowerPoint slides used to support pharmacology content during the preclinical years of medical school training. METHODS: Researchers implemented a quasi-experimental design, using traditionally-designed (original) slides with a Traditional group (n = 100) and slides redesigned to follow principles from the Cognitive Theory of Multimedia Learning with an Experimental group (n = 40). Participants in the Experimental group completed a post-survey incorporating the Situational Interest Survey for Multimedia to indicate motivational engagement with the media. Students in the Experimental group also responded to additional preference questions. Researchers analyzed survey responses and students' scores in pharmacology-related coursework across the preclinical Foundations Phase of training to determine the impact on achievement and motivation. RESULTS: Findings related to learner achievement showed a modest but significant increase in the Experimental group compared to the Traditional group in the Cardiac, Pulmonary, and Renal (CPR) educational block (105%, normalized to Traditional group, p = 0.013) and cumulative pharmacology grades (101%, normalized to Traditional group, p = 0.043). Additionally, participants in the Experimental group indicated a significantly higher average triggered situational interest in redesigned slides (M = 4.85, SD = 0.25) than the original slides (M = 3.23, SD = 1.40, t=-6.33, p < 0.001). Similarly, the interest rating of the redesigned slides (M = 4.87, SD = 0.24) was significantly greater than that of the original slides (M = 3.89, SD = 0.86, t=-6.824, p < 0.001). Moreover, results further indicated significant differences in the maintained-feeling and maintained-value constructs, and all participants in the Experimental group indicated a preference for the redesigned slides. CONCLUSIONS: The findings provide strong evidence in support of using the Cognitive Theory of Multimedia Learning design principles to intentionally design media in medical education. In addition to increased achievement scores, students in the Experimental group demonstrated significantly higher levels of situational interest in the redesigned slides, especially triggered interest and maintained-feeling interest. Medical education learning designers should seriously consider redesigning media to achieve similar results.

Effectiveness of multimedia education on the childbearing intention in one-child women: a field trial study.

BACKGROUND: childbearing is a key component of population movements and sustainable development in low-fertility nations. This study was conducted with the aim of determining the impact of multimedia education on the childbearing intention in One-child women of Maragheh city. METHOD: In this intervention study in Maragheh in 2023, 94 women with one child were randomly selected and placed in two intervention and control groups. Before the intervention, people were examined using demographic information and Miller's questionnaire of desire to have children. Then, For the intervention group, three 60-minute multimedia training videos were shown in person for three weeks, and the control group did not receive any training. The data were collected using the researcher's demographic questionnaire and Miller's childbearing questionnaire in three stages before the intervention, immediately after and six weeks after the intervention. Data analysis was done with SPSS version 16 software. RESULTS: There was no significant difference between the two groups in terms of the average score of desire to have children and demographic variables (p > 0.05). Before the intervention, there was no significant difference between the intervention and control groups in terms of the demographic characteristics of the subjects and the average score of women's willingness to have children in the positive and negative dimensions. While after the multimedia educational intervention, the average score of desire to have children in positive and negative dimensions, immediately after the intervention and six weeks after the intervention, had a significant difference compared to before the intervention (p < 0.001). CONCLUSION: The findings of the study showed that carrying out multimedia educational interventions to single-child women can have a positive effect on their desire to have children. It seems that the implementation of such programs is effective in the conscious decision of families to have children and ultimately increases the intention of the individual to carry out the behavior. TRIAL REGISTRATION: Iranian Registry of Clinical Trials: IRCT20230227057549N1. Date of registration: 16/04/2023. URL: https://irct.behdasht.gov.ir/ .

Effectiveness of preoperative multimedia educational sessions on the levels of anxiety and satisfaction among women undergoing cesarean: a systematic review and meta-analysis.

This systematic review and meta-analysis aimed to explore the effectiveness of preoperative multimedia educational sessions on the levels of anxiety and satisfaction among women undergoing cesarean section (CS). The Scopus, PubMed, and Cochrane databases were searched without language limitations for eligible randomized controlled trials (RCTs) published from their inception up to October 15, 2023. A random-effect meta-analysis was conducted, and the quality of this meta-analysis was evaluated using the GRADE (Grading of Recommendations Assessment, Development, and Evaluation) approach. Seven RCTs (n = 1006 women) met the inclusion criteria. Preoperative multimedia sessions were found to significantly reduce anxiety levels (n = 6 RCTs, weighted mean difference: -3.10; 95 percent confidence intervals (CI): -4.48, -1.73; I2 = 44.24 percent, moderate certainty of evidence) compared to the control group. However, there was no significant difference between the two groups regarding women's satisfaction after surgery (n = 5 RCTs, risk ratio: 1.37; 95 percent CI: 0.76, 2.50; I2 = 98.26 percent, moderate certainty of evidence). Leave-one-out sensitivity analysis showed robustness of the outcomes. The findings of this meta-analysis suggest that providing multimedia educational programs before surgery could potentially have a beneficial effect on the levels of anxiety experienced by women undergoing CS. However, it is imperative to validate these results through larger samples and multi-centered RCTs.

The effects of a multimedia intervention on help-seeking process with a Chinese college student sample.

Little is known about encouraging help-seeking in non-English speaking settings and relatively little research has been directed to facilitate help-seeking among Chinese-speaking people. This study examined the effects of a multimedia intervention on barriers, attitudes, and intentions for seeking counseling in China. The multimedia intervention was informed by prior empirical research on models of help-seeking for counseling. A total of 200 participants were randomly assigned to one of the two conditions: (1) a help-seeking media-exposed intervention group and (2) a control group, who watched a hospital advertisement that was unrelated to mental health help-seeking. Results indicated that the intervention was effective at increasing both positive attitudes toward therapy and intentions to seek therapy. The intervention also improved participants' perceptions about treatment accessibility. This intervention is available and can be a resource for Chinese language populations (both within China and other countries), especially for immigrants, rural, and persons who might benefit from mental health treatments such as psychotherapy.

[Design and evaluation options of multimedia applications to support the care of people with mild dementia]. / Gestaltungs- und Evaluationsmöglichkeiten von Multimediaanwendungen zur Unterstützung der Betreuung von Menschen mit leichter Demenz.

BACKGROUND: In order to cognitively and physically activate people with dementia (MMD) in institutional settings, there are numerous touch-based multimedia applications specifically designed for this target group that are actually being used in practice. In contrast, the use of similar applications in domestic settings has been relatively limited. AIM AND METHOD: This study is based on 11 expert interviews guided by questions and examines design options and requirements for application content as well as requirements for study designs to provide evidence of the effectiveness of touch-based multimedia applications for MMD and their caregiving relatives (PA). RESULTS: There is a high degree of consensus regarding the criteria for requirements for touch-based multimedia applications. Acceptance is highly dependent on user competence, usage practices, experiences and incentive structures; however, there are diverse opinions about their structural and content-related design. The quality of life is mentioned as an essential evaluation parameter for multimedia applications. DISCUSSION: The highly variable individual life circumstances of MMD and their PAs, along with limited access options and a lack of suitability of the multimedia applications, may be causal factors for their relatively limited use, especially in domestic settings. Daily performance capabilities and individual disease progression pose special requirements for the scientific evaluation and the demonstration of the effectiveness of touch-based multimedia applications.

Comparative study of AR infographic posters vs. offline videos for micro-video delivery in cardiology education.

Augmented reality has promised a new paradigm in medical education. Multimedia videos are the most preferred assent for augmentation. So, this study aimed to assess the effect of using an augmented reality infographic poster for delivering micro-videos on the knowledge and satisfaction of medical students in cardiology rotation. Sixty students participated in this quasi-experimental study and were allocated to three study groups; namely routine method, routine method plus offline micro-video delivery, and routine method plus micro-video delivery in an augmented reality infographic poster. The students' knowledge and satisfaction were evaluated through a multiple-choice question pre and post-test and a satisfaction questionnaire respectively. Within-group comparison of pre and post-test scores showed a significant increase in each study group (all p-values = 0.000). The highest post-test score was for the offline micro-video delivery group and pairwise comparisons of post-test scores showed a significant difference between this group and the control one (p-value = 0.013). Additionally, the augmented reality infographic poster group had the highest satisfaction score (p-value = 0.000). This experience showed the positive effect of micro-videos in clinical education. Although students were satisfied with accessing these videos through an augmented reality infographic poster, their knowledge acquisition was better when they received them offline.

Can we achieve better trial recruitment by presenting patient information through multimedia? Meta-analysis of 'studies within a trial' (SWATs).

BACKGROUND: People need high-quality information to make decisions about research participation. Providing information in written format alone is conventional but may not be the most effective and acceptable approach. We developed a structure for the presentation of information using multimedia which included generic and trial-specific content. Our aim was to embed 'Studies Within A Trial' (SWATs) across multiple ongoing trials to test whether multimedia presentation of patient information led to better rates of recruitment. METHODS: Five trials included a SWAT and randomised their participants to receive a multimedia presentation alongside standard information, or standard written information alone. We collected data on trial recruitment, acceptance and retention and analysed the pooled results using random effects meta-analysis, with the primary outcome defined as the proportion of participants randomised following an invitation to take part. RESULTS: Five SWATs provided data on the primary outcome of proportion of participants randomised. Multimedia alongside written information results in little or no difference in recruitment rates (pooled odds ratio = 0.96, 95% CI: 0.79 to 1.17, p-value = 0.671, I2 = 0%). There was no effect on any other outcomes. CONCLUSIONS: Multimedia alongside written information did not improve trial recruitment rates. TRIAL REGISTRATION: ISRCTN71952900, ISRCTN 06710391, ISRCTN 17160087, ISRCTN05926847, ISRCTN62869767.

Providing multimedia information to children and young people increases recruitment to trials: pre-planned meta-analysis of SWATs.

BACKGROUND: Randomised controlled trials are often beset by problems with poor recruitment and retention. Information to support decisions on trial participation is usually provided as printed participant information sheets (PIS), which are often long, technical, and unappealing. Multimedia information (MMI), including animations and videos, may be a valuable alternative or complement to a PIS. The Trials Engagement in Children and Adolescents (TRECA) study compared MMI to PIS to investigate the effects on participant recruitment, retention, and quality of decision-making. METHODS: We undertook six SWATs (Study Within A Trial) within a series of host trials recruiting children and young people. Potential participants in the host trials were randomly allocated to receive MMI-only, PIS-only, or combined MMI + PIS. We recorded the rates of recruitment and retention (varying between 6 and 26 weeks post-randomisation) in each host trial. Potential participants approached about each host trial were asked to complete a nine-item Decision-Making Questionnaire (DMQ) to indicate their evaluation of the information and their reasons for participation/non-participation. Odds ratios were calculated and combined in a meta-analysis. RESULTS: Data from 3/6 SWATs for which it was possible were combined in a meta-analysis (n = 1758). Potential participants allocated to MMI-only were more likely to be recruited to the host trial than those allocated to PIS-only (OR 1.54; 95% CI 1.05, 2.28; p = 0.03). Those allocated to combined MMI + PIS compared to PIS-only were no more likely to be recruited to the host trial (OR = 0.89; 95% CI 0.53, 1.50; p = 0.67). Providing MMI rather than PIS did not impact on DMQ scores. Once children and young people had been recruited to host trials, their trial retention rates did not differ according to intervention allocation. CONCLUSIONS: Providing MMI-only increased the trial recruitment rate compared to PIS-only but did not affect DMQ scores. Combined MMI + PIS instead of PIS had no effect on recruitment or retention. MMIs are a useful tool for trial recruitment in children and young people, and they could reduce trial recruitment periods.

Mercury in multimedia system of Itacaiúnas Basin, Brazilian Amazon: An integrated approach to understand its distribution, origin, and ecological risk.

This study presents the first integrated study on total Hg (THg) level in surface soil (SS), bottom soil (BS), stream sediments (SD), lake sediments (LS), stream water (SW), and lake water (LW) of Itacaiúnas River Watershed (IRW), Brazil to investigate the source and distribution of Hg in different environmental media considering contrasts of geological domains and sub-basins and its potential ecological and human risk. Hg content in most of the soils and sediments were above the upper crustal average values (56 µg/kg), however, when compared to the legal limits set by the Resolution CONAMA (Conselho Nacional de Meio Ambiente: soil 500 µg/kg; sediment 486 µg/kg), only 1 soil sample from Parauapebas sub-basin and 4 sediment samples from Violão Lake exceeded the limit. None of the SW and LW samples (<0.2 µg/L; CONAMA limit for Class II freshwater) are markedly contaminated by Hg. The SS and BS show similar contents and spatial distribution of Hg with higher contents being registered mostly in the Itacaiúnas and Parauapebas sub-basins, which are closely correlated with SD. This suggests that Hg levels are largely of geogenic origin and anthropogenic effect is highly limited. Principal Component Analysis (PCA) results show that Hg is strongly associated with total organic carbon (TOC), loss on ignition (LOI), and SO3, indicating organic matter as the main factor controlling the distribution of Hg and this is the major cause of accentuated Hg enrichment in lake sediments. The ecological risk index revealed a low pollution risk for most of the solid samples, except 11% LS and <1.5% SS and SD samples, which registered moderate risk. Health risk assessment indicated no adverse non-carcinogenic health effect on either adults and children in terms of Hg contamination. This information will be useful for Hg risk assessment in the Carajás region and future environmental research in this direction in the Amazonia.

An integrated multimedia fate modeling framework for identifying mitigation strategy of antibiotic ecological risks: A case study in a peri-urban river.

Antibiotics have been heavily used over the past decades, resulting in their frequent detections in rivers and increasing ecological risks. Recognizing characteristics of antibiotic ecological risks (AERs) and making effective strategies to mitigate the AERs are essential to ensure the safety of aquatic ecosystem and public health. In this study, an integrated technological framework has been proposed toward identifying management options for reducing AERs by jointly utilizing multimedia fugacity modelling and ecotoxicological risk assessment, and applied to characterize the AERs in a peri-urban river in Beijing. Specifically, a level III fugacity model has been successfully established to simulate the fate of antibiotics in the environment, and the manageable parameters have been screened out via sensitivity analysis of the model. Then the validated fugacity model has been used for scenario modellings to optimize mitigation strategies of AERs. Results show most of the antibiotics considered are frequently detected in the river, and pose medium or high risks to aquatic organisms. Relatively, the macrolides and fluoroquinolones present higher ecotoxicological risks than sulfonamides and tetracyclines. Furthermore, the mixture risk quotient and predictive equation of concentration addition suggest joint and synergistic/antagonistic effects of AERs for multiple or binary antibiotics in the environment. Largely, the concentrations of antibiotics in the river are determined by the source emissions into water and soil. Scenario modellings show the improvement of antibiotic removal rates would be considered preferentially to mitigate the AERs. Also, controlling human consumption is conducive to reducing the risks posed by tetracyclines, macrolides and trimethoprim, while controlling animal consumption would benefit the reduction for sulfonamides. Overall, the joint strategy presents the greatest reduction of AERs by reducing antibiotic consumption and together improving sewage treatment rate and antibiotic removal rate. The study provides us a useful guideline to make ecological risk-based mitigation strategy for reducing AERs in environment.

Exploring factors influencing young children's learning from storybooks: Interactive and multimedia features.

Electronic storybooks are increasingly popular with preschoolers. The purpose of our research was to investigate the effects of interactive and multimedia features in electronic storybooks on preschoolers' learning. We assigned 4- to 6-year-old children to different reading conditions in two experiments. Children were required to complete tests for learning outcomes and answer questions about the reading experience. In Experiment 1, children in the interactive (self-paced) group needed to turn the pages by a button on the page, whereas the pages were turned automatically in the non-interactive (system-controlled) group. We found that children in the system-controlled condition performed better in inference making than children in the self-paced condition. In Experiment 2, we used a 2 (Animation: present or non-present) × 2 (Background Music: present or non-present) between-participants design. We found that children's scores of learning and interest in groups with animations were higher than those in groups without animations. This research suggests that electronic books with animations congruent with the learning content promote learning for both adults and young children. Thus, we offer suggestions for designers of electronic books. Moreover, the study provides implications for educators and parents, and we suggest that multi-featured electronic storybooks for preschoolers should be carefully selected.

Development and validation of educational multimedia to promote public health literacy about healthy cognitive aging.

OBJECTIVES: Health literacy (HL) about healthy cognitive aging is essential in preventing cognitive decline and promoting cognitive well-being. It is important that one such HL module should be scientifically designed, delivered in a technically sound manner to the audience, and specific to the context. The present study thus aimed at developing and validating educational multimedia about cognitive health. METHODS: The study followed a methodological framework and was carried out across three phases, that is, identification of themes, development and validation of educational script and design, and validation of educational multimedia. The module was scripted based on the Integrated HL framework and the recommendations made during the modified nominal group technique among the research team. Seven speech-language pathologists (SLPs), with expertise in the field of cognitive sciences, and 15 representatives of the general public validated the module using the Educational Content Validation Instrument in Health and the Patient Education Materials Assessment Tool for Audiovisual Materials questionnaire. RESULTS: The scientific content of the educational script received satisfactory agreements among the experts (content validity index [CVI]: 0.93) and representatives of the general public (CVI: 0.86). The technical aspects of the educational multimedia were rated to have high understandability (experts: 92.8%; representatives of general public: 98.8%) and actionability (experts and representatives of general public 100%). CONCLUSION: Overall, the developed educational multimedia scored optimally with respect to the objective, structure, relevance of the content, actionability and understandability of the multimedia. The developed module holds the potential to be used at community and national level health educational programs or awareness campaigns to enhance public knowledge and beliefs pertaining to cognitive health. PATIENT OR PUBLIC CONTRIBUTION: SLPs with expertise in the field of cognitive science and representatives from the general public were included to validate and obtain feedback on the developed educational multimedia.

BabyWASH and diarrhea prevention practices following multimedia educational intervention in hard-to-reach areas of the Afar and Somali regions of Ethiopia: a mixed-method endline evaluation.

BACKGROUND: Water, sanitation, and hygiene (WASH) interventions, which are specifically targeted towards young children-known as "BabyWASH"-reduce exposure to environmental contamination and prevent microbial burden in their play and feeding environments. The purpose of this endline study was to evaluate the effectiveness and potential sustainability of a multimedia educational intervention in influencing key BabyWASH and diarrhea prevention practices in four hard-to-reach woredas (i.e. administrative districts) of the Afar and Somali regions of Ethiopia. METHODS: A mixed-method, comparative cross-sectional study was conducted, which included 457 household surveys, 16 key informant interviews, and 8 focus group discussions. The multimedia educational intervention comprised: broadcasting radio talk shows and radio spot messages, capacity-building training for community health workers and community leaders, community mobilization campaigns, and the distribution of promotional print media materials. Propensity score matching analysis was used to estimate the effect of the multimedia educational intervention on key BabyWASH and diarrhea prevention attitudes and practices, which was then triangulated with qualitative findings. RESULTS: The multimedia intervention had a significant positive impact on good BabyWASH and diarrhea prevention practices, including appropriate practices of child feces disposal (t-test = 5.17; p < 0.001), handwashing with soap or ash (t-test = 8.85; p < 0.001), maintaining separate playgrounds for young children (t-test = 2.83; p < 0.001), washing of child's body, hands, and faces (t-test = 15.78; p < 0.001), and food hygiene practices (t-test = 2.74; p < 0.05). The findings of the qualitative assessment also revealed that the multimedia intervention packages and the approaches used were successful in influencing key BabyWASH and diarrhea prevention behaviors in the intervention implementation woredas. In addition, providing capacity building training to local actors and community leaders and recording radio talk shows and sharing them with community members were recognized as effective intervention implementation strategies. CONCLUSION: The endline evaluation found that the multimedia educational intervention improved awareness, perception, and practice of BabyWASH and diarrhea prevention behaviors in intervention woredas compared to control woredas. Sanitation and hygiene promotion interventions in pastoralist settings can be effective when using locally and contextually appropriate intervention strategies. However, considerations for integrating both behavioral and structural components in WASH interventions is essential.

Investigating the effect of multimedia education based on the health belief model in preventing COVID-19 in pregnant women.

BACKGROUND: Pregnant women are considered one of the high-risk groups during the COVID-19 pandemic, so paying attention to preventive behaviors among them is highly important. This study aimed to examine the effect of multimedia education based on the Health Belief Model (HBM) in preventing COVID-19 among pregnant women. METHODS: This quasi-experimental intervention study was conducted on 120 pregnant women referring to Comprehensive Health Services Centers affiliated with East and West health centres of Ahvaz city, Iran, in 2021. Participants were divided into two control (n = 60) and intervention (n = 60) groups. A researcher-made questionnaire was used for data collection. The intervention group was given the required educational content using social networks virtually and multimedia in 12 sessions. Both groups were reinvestigated after two months. Data were analyzed using SPSS software version 24, independent t-test and paired t-test tests. RESULTS: The mean age and mean gestational age of participants were estimated at 28 years old and 18 weeks, respectively. Before the educational intervention, there was no significant difference in mean constructs of HBM. In contrast, the mean of all constructs increased significantly in the intervention group after intervention. The greatest change was related to the constructs of self-efficacy and perceived susceptibility, and the lowest change was related to the perceived barriers construct. CONCLUSION: Our findings suggest multimedia education using the HBM to COVID-19 preventive behaviors among pregnant women can benefit behavior change.

Application of the multimedia fugacity model in predicting the environmental behaviors of PCBs: Based on field measurements and level III fugacity model simulation.

The comprehensive understanding of PCBs' fate has been impeded by the lack of simultaneous monitoring of PCBs in multiple environmental media in the background areas, which were considered long-term sinks for highly chlorinated PCBs. To address this gap, this study analyzed soils, willow tree barks, water, suspended particulate matter (SPM), and sediment samples collected from the middle reach of the Huaihe River in China for 27 PCBs. The results showed that the levels of ∑27PCBs in the soils were comparable to or lower than the background values worldwide. There were no significant correlations between organic matter and ∑27PCB concentrations in the soils and sediments. Additionally, the contamination of dioxin-like PCBs in the aquatic environment of the study area deserves more attention than in the soils. Applying the level III fugacity model to PCB 52, 77, 101, and 114 revealed that the soil was the primary reservoir, and air-soil exchange was the dominant intermedia transfer process, followed by air-water exchange. Furthermore, simulated results of air-soil and air-water diffusion were compared with those calculated from the field concentrations to predict the potential environmental behaviors of PCBs. Results indicated that the studied river would be a "secondary source" for PCB 52, 77, and 101. However, PCB 52, 77, 101, and 114 would continue to transfer from the air to the soil. This study combines multimedia field measurements and the fugacity model, providing a novel approach to predicting the potential environmental behaviors of PCBs.