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Conatser RL. Child passenger safety: Implementation and evaluation of a virtual educational intervention for parents and caregivers. ACCIDENT; ANALYSIS AND PREVENTION 2024; 203:107618. [PMID: 38733808 DOI: 10.1016/j.aap.2024.107618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 04/20/2024] [Accepted: 05/05/2024] [Indexed: 05/13/2024]
Abstract
OBJECTIVE The objective of this project was to determine how a virtual educational intervention on Child Passenger Safety (CPS) impacts post-intervention knowledge and self-efficacy levels. METHODS The intervention included watching a video related to CPS and completing a virtual car seat check with a certified Child Passenger Safety Technician (CPST). A quantitative pre- and post-test project design was utilized. Self-efficacy was measured using a confidence assessment and knowledge level was measured with a comprehension test. Participants were included if they had access to the internet, were English speaking, and parents or caregivers of children aged 12 years or younger. The program was active between February and April of 2021. Out of 58 individuals who expressed interest in participating in the program, the completion rate was 41 %. There were 24 participants who completed all steps of the intervention with a range in days to completion of 59 days. RESULTS A video-based education intervention combined with completing a virtual car seat check with a CPST was shown to have a statistically significant impact on the knowledge and self-efficacy levels surrounding the use and installation of Child Safety Seats (CSSs) by parents and caregivers. There were a total of 34 car seats that were assessed during the virtual car seat checks and results showed that 65.6% of the car seats that were assessed on arrival had at least 1 error present. In whole, there were 34 car seat errors identified by the CPSTs throughout this project timeline. CONCLUSIONS A video-based educational intervention combined with a virtual car seat check with a certified CPST has a positive impact on the knowledge and self-efficacy levels of participants. The data analysis shows the project was a successful and meaningful intervention to promote improvements in the field of CPS. This study design allows for the implementation of additional resources and supports for CPS within rural areas and at-risk populations and can help to address public health issues related to a lack of resources based on geographic location.
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Affiliation(s)
- Rebecca L Conatser
- School of Nursing, Ohio University, 5499 Lehman Meadows Drive, Canal Winchester, OH 43110, USA.
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Chen SY, Garcia I, Ourshalimian S, Lowery C, Chaudhari PP, Spurrier RG. Childhood opportunity and appropriate use of child safety restraints in motor vehicle collisions. WORLD JOURNAL OF PEDIATRIC SURGERY 2024; 7:e000703. [PMID: 38571719 PMCID: PMC10989117 DOI: 10.1136/wjps-2023-000703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 02/01/2024] [Indexed: 04/05/2024] Open
Abstract
Objectives Safety restraints reduce injuries from motor vehicle collisions (MVCs) but are often improperly applied or not used. The Childhood Opportunity Index (COI) reflects social determinants of health and its study in pediatric trauma is limited. We hypothesized that MVC patients from low-opportunity neighborhoods are less likely to be appropriately restrained. Methods A retrospective cross-sectional study was performed on children/adolescents ≤18 years old in MVCs between January 1, 2011 and December 31, 2021. Patients were identified from the Children's Hospital Los Angeles trauma registry. The outcome was safety restraint use (appropriately restrained, not appropriately restrained). COI levels by home zip codes were stratified as very low, low, moderate, high, and very high. Multivariable regression controlling for age identified factors associated with safety restraint use. Results Of 337 patients, 73.9% were appropriately restrained and 26.1% were not appropriately restrained. Compared with appropriately restrained patients, more not appropriately restrained patients were from low-COI (26.1% vs 20.9%), high-COI (14.8% vs 10.8%) and very high-COI (10.2% vs 3.6%) neighborhoods. Multivariable analysis demonstrated no significant associations in appropriate restraint use and COI. There was a non-significant trend that children/adolescents from moderate-COI neighborhoods were more likely than those from very low-COI neighborhoods to be appropriately restrained (OR=1.82, 95% CI 0.78, 4.28). Conclusion Injury prevention initiatives focused on safety restraints should target families of children from all neighborhood types. Level of evidence III.
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Affiliation(s)
- Stephanie Y Chen
- Pediatric Surgery, Children's Hospital Los Angeles, Los Angeles, California, USA
| | - Iris Garcia
- Injury Prevention Program, Children's Hospital Los Angeles, Los Angeles, California, USA
| | | | - Chantel Lowery
- Injury Prevention Program, Children's Hospital Los Angeles, Los Angeles, California, USA
| | - Pradip P Chaudhari
- Emergency and Transport Medicine, Children's Hospital Los Angeles, Los Angeles, California, USA
- Pediatrics, University of Southern California Keck School of Medicine, Los Angeles, California, USA
| | - Ryan G Spurrier
- Pediatric Surgery, Children's Hospital Los Angeles, Los Angeles, California, USA
- Surgery, University of Southern California Keck School of Medicine, Los Angeles, California, USA
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Lourens A, Sinclair M, Willems B, Young T. Education, incentive, and engineering-based interventions to promote the use of seat belts. Cochrane Database Syst Rev 2024; 1:CD011218. [PMID: 38197528 PMCID: PMC10777455 DOI: 10.1002/14651858.cd011218.pub2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
BACKGROUND Over 1.3 million people die each year as a result of traffic collisions and hundreds of thousands of others are permanently and seriously injured. Most of these deaths occur in low- and middle-income countries, where mortality rates can be up to 10 times higher than those of some high-income countries. Seat belts are designed to accomplish two key functions - to prevent the occupant from being ejected from the vehicle by the force of impact, and to extend the time that the decelerating force is applied to a person. Seat belts also spread the area of impact both to larger and less vulnerable parts of the body. Since the 1950s, seat belts have been factory-fitted to most vehicles, and today around 90% of high-income countries have adopted seat belt legislation that makes it mandatory for some, if not all, vehicle occupants to wear seat belts. However, the simple passing of laws is not sufficient to ensure seat belt use, and, while the enforcement of seat belt laws does increase seat belt use, other interventions have been developed to encourage voluntary - and hence sustainable - behaviour change. OBJECTIVES To evaluate the benefits of behavioural-change interventions (educational-based, incentive-based, engineering-based, or a combination, but not enforcement-based) that promote the use of seat belts, and to determine which types of interventions are most effective. SEARCH METHODS On 9 August 2022, we searched the Cochrane Central Register of Controlled Trials (CENTRAL), OvidSP Embase, OvidSP MEDLINE, 14 other databases, and clinical trials registers. We also screened reference lists and conference proceedings, searched websites of relevant organisations, and contacted road safety experts. The search was performed with no restrictions in terms of language and date of publication. SELECTION CRITERIA We included randomised controlled trials (RCTs), both individually randomised and cluster-randomised, that evaluated education, engineering, incentive-based interventions (or combinations) that promoted seat belt use. DATA COLLECTION AND ANALYSIS Two review authors independently assessed the eligibility of RCTs, evaluated the risk of bias, and extracted data. We performed a narrative synthesis based on effect direction due to the heterogeneity observed between RCTs and reported the synthesis in accordance with reporting guidelines for systematic reviews without meta-analysis, as appropriate. We assessed the certainty of the evidence using the GRADE approach. We analysed data on the primary outcome, frequency of wearing a seat belt. None of the included RCTs reported the other primary outcome, crash-related injury rate or the secondary outcome, crash-related mortality rates of interest in this review. MAIN RESULTS We included 15 completed RCTs (12 individual, parallel-group, and three cluster) that enroled 12,081 participants, published between 1990 and 2022. Four trials were published between 2019 and 2022, and the remaining trials were published 10 or more years ago. We also identified four ongoing RCTs. Thirteen RCTs were conducted in the USA. Trials recruited participants from various sites (worksites, schools, emergency departments, a residential retirement community, and primary care settings) and different age groups (adults, late adolescents, early adolescents, and dyads). Thirteen trials investigated educational interventions, one of which used education in addition to incentives (one of the intervention arms) measured through participant self-reports (12) and observation (one), and two trials investigated engineering-based interventions measured through in-vehicle data monitor systems at various follow-up periods (six weeks to 36 months). We grouped RCTs according to types of education-based interventions: behavioural education-based, health risk appraisal (HRA), and other education-based interventions. The evidence suggests that behavioural education-based (four trials) interventions may promote seat belt use and HRA interventions (one trial) likely promote seat belt use in the short term (six weeks to nine months). Four of the six trials that investigated behavioural education-based interventions found that the intervention compared to no or another intervention may promote seat belt use. These effects were measured through participant self-report and at various time points (six-week to 12-month follow-up) (low-certainty evidence). One of the three trials investigating HRA only or with additional intervention versus no or another intervention showed observed effects likely to promote seat belt use (moderate-certainty evidence). The evidence suggests that engineering-based interventions using vehicle monitoring systems (with in-vehicle alerts and with or without notifications/feedback) may promote the use of seat belts. One trial showed that engineering interventions (in-vehicle alerts and feedback) may promote seat belt use while the other showed unclear effects in two of the three intervention groups (low-certainty evidence). Both trials had small sample sizes and high baseline seat belt use. AUTHORS' CONCLUSIONS The evidence suggests that behavioural education-based interventions may promote seat belt use and HRA (including incentives) with or without additional interventions likely promote seat belt use. Likewise, for engineering-based interventions using in-vehicle data monitor systems with in-vehicle alerts, with or without notifications/feedback the evidence suggests the interventions may promote the use of seat belts. Well-designed RCTs are needed to further investigate the effectiveness of education and engineering-based interventions. High-quality trials that examine the potential benefits of incentives to promote seat belt use, either alone or in combination with other interventions, as well as trials to investigate other types of interventions (such as technology, media/publicity, enforcement, insurance schemes, employer programmes, etc.) to promote the use of seat belts, are needed. Evidence from low- and middle-income economies is required to improve the generalisability of the data. In addition, research focused on determining which interventions or types of interventions are most effective in different population groups is needed.
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Affiliation(s)
- Andrit Lourens
- Division of Emergency Medicine, Department of Family, Community and Emergency Care, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
- Department of Clinical Health Sciences, School of Health Sciences, Faculty of Health, Natural Resources and Applied Sciences, Namibia University of Science and Technology, Windhoek, Namibia
| | - Marion Sinclair
- Department of Civil Engineering, University of Stellenbosch, Matieland, South Africa
| | - Bart Willems
- Division of Health Systems and Public Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Taryn Young
- Centre for Evidence-based Health Care, Division of Epidemiology and Biostatistics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
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Teichman AL, Walls DO, Choron RL, Starace D, Mosier AS, Lissauer M, Gupta R. Improving elementary students' knowledge and behavior to prevent traumatic injury: the impact of a behavioral skills training model delivered by aspirational role models. Eur J Pediatr 2023:10.1007/s00431-023-05002-3. [PMID: 37154923 DOI: 10.1007/s00431-023-05002-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/26/2023] [Accepted: 04/22/2023] [Indexed: 05/10/2023]
Abstract
Trauma is the leading cause of childhood morbidity and mortality annually in the USA, accounting for 11% of deaths, most commonly due to car crashes, suffocation, drowning, and falls. Prevention is paramount for reducing the incidence of these injuries. As an adult level 1 and pediatric level 2 trauma center, there is a commitment to injury prevention through outreach and education. The Safety Ambassadors Program (SAP) was developed as part of this aim. Safety Ambassadors (SA) are high schoolers who teach elementary school students about safety/injury prevention. The curriculum addresses prevalent areas of injury risk: car/pedestrian safety, wheeled sports/helmets, and fall prevention. The study group hypothesized that participation in SAP leads to improved safety knowledge and behaviors and ultimately reduces childhood preventable injuries. Educational material was delivered by high school students (ages 16-18 years old). First and second-grade participants (ages 6-8 years old) completed pre- and post-course exams to assess knowledge (12 questions) and behavior (4 questions). Results were retrospectively reviewed, and pre/post training mean scores were calculated. Scores were calculated based on number of correct answers on pre/post exam. Comparisons were made using the Student t-test. All tests were 2-tailed with significance set at 0.05. Pre- and post-training results were assessed for 2016-2019. Twenty-eight high schools and 37 elementary schools were enrolled in the program with 8832 student participants in SAP. First graders demonstrated significant improvement in safety knowledge (pre 9 (95% CI 8.9-9.2) vs post 9.8 (95%CI 9.6-9.9), (p < 0.01)) and behavior modification (pre 3.2 (95%CI 3.1-3.2) vs post 3.6 (95% CI 3.5-3.6), (p < 0.01)). Similar findings were seen in 2nd graders: safety knowledge (pre 9.6 (95% CI 9.4-9.9) vs post 10.1 (95% CI 9.9-10.2), (p < 0.01)) and behavior (pre 3.3 (95% CI 3.1-3.4) vs post 3.5 (95%CI 3.4-3.6), (p < 0.01)). Conclusion: SAP is a novel evidence-based educational program delivered to elementary school students by aspirational role models. This model is impactful, relatable, and engaging when provided by participants' older peer mentors. On a local level, it has demonstrated improved safety knowledge and behavior in elementary school students. As trauma is the leading cause of pediatric death and disability, enhanced education may lead to life-saving injury prevention in this vulnerable population. What is Known: • Preventable trauma is the leading cause of pediatric death in the USA and education has contributed to improvements in both safety knowledge and behavior. • The ideal delivery method for injury prevention education in children continues to be under investigation. What is New: • Our data suggest that a peer-based injury prevention model is both an effective education delivery method and easily instituted within existing school systems. • This study supports implementation of peer-based injury prevention programs to improve safety knowledge and practices. • With more widespread institution and research, we hope to ultimately reduce preventable childhood injury.
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Affiliation(s)
- Amanda L Teichman
- Department of Surgery, Division of Acute Care Surgery, Rutgers Robert Wood Johnson Medical School, 125 Paterson Street Suite 6300, New Brunswick, NJ, 08901, USA.
| | - David O Walls
- Department of Surgery, Division of Acute Care Surgery, Rutgers Robert Wood Johnson Medical School, 125 Paterson Street Suite 6300, New Brunswick, NJ, 08901, USA
| | - Rachel L Choron
- Department of Surgery, Division of Acute Care Surgery, Rutgers Robert Wood Johnson Medical School, 125 Paterson Street Suite 6300, New Brunswick, NJ, 08901, USA
| | - Diana Starace
- Department of Surgery, Division of Acute Care Surgery, Rutgers Robert Wood Johnson Medical School, 125 Paterson Street Suite 6300, New Brunswick, NJ, 08901, USA
| | - Allison S Mosier
- Department of Surgery, Division of Acute Care Surgery, Rutgers Robert Wood Johnson Medical School, 125 Paterson Street Suite 6300, New Brunswick, NJ, 08901, USA
| | - Matthew Lissauer
- Acute Care Surgery, Hartford HealthCare Medical Group, 80 Seymour Street, Hartford, CT, 06102, USA
| | - Rajan Gupta
- Acute Care Surgery, Foundation Surgery, Solution Health, 8 Prospect Street, Nashua, NH, 03060, USA
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Qian LF, Cheng TT, Chen HX, He DH, Peng XM, Zhao QH. Evaluation of the community involvement of nursing experts in reducing unintentional injuries in children. BMC Pediatr 2023; 23:42. [PMID: 36694183 PMCID: PMC9872291 DOI: 10.1186/s12887-022-03700-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Accepted: 10/24/2022] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND Nursing experts regularly visited the community to deliver safety education on the prevention of unintentional injuries in children to the parents of children aged 0-6 years and to pregnant women in a maternity school. This was undertaken to explore the effects of the measure on preventing unintentional injuries in children in Chizhou, China. METHODS Using the convenience sampling method, the guardians(it means mother in this study)of children were investigated. The nursing experts visited communities in which the number of nursing experts is declining. Data on unintentional injuries in children in the previous year were collected retrospectively. RESULTS After the nursing experts delivered safety education to the community, the scores of the questionnaire on unintentional injury prevention knowledge completed by children's guardians increased significantly (p < 0.01). Among the children whose guardians completed the questionnaire, there were 157 cases of unintentional injury in 2020 and 103 cases in 2021 (p < 0.05). The types of unintentional injuries included scratches, falls, sharp object injuries, swallowing of foreign bodies, burns and traffic accidents; there was no statistical difference (p > 0.05). However, there were significant differences in terms of gender ratio and location (p < 0.05). CONCLUSION In conjunction with the maternity school for pregnant women and the vaccination programme, nursing experts delivered safety education regarding unintentional injuries in children; this may have promoted safety and protection awareness in the children's guardians and reduced unintentional injuries.
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Affiliation(s)
- Li-Fang Qian
- Department of Nursing, People’s Hospital of Chizhou, Chizhou, 247000 China
| | - Ting-Ting Cheng
- Department of Nursing, People’s Hospital of Chizhou, Chizhou, 247000 China
| | - Hong-Xia Chen
- Department of Nursing, People’s Hospital of Chizhou, Chizhou, 247000 China
| | - Dong-Hui He
- Department of Nursing, People’s Hospital of Chizhou, Chizhou, 247000 China
| | - Xiao-Min Peng
- Department of Nursing, People’s Hospital of Chizhou, Chizhou, 247000 China
| | - Qing-Hua Zhao
- Department of Nursing, People’s Hospital of Chizhou, Chizhou, 247000 China
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Jiang L, Zhao M, Lin H, Xu H, Chen X, Xu J. Will Smart Improvements to Child Restraints Increase Their Popularity? INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:15727. [PMID: 36497801 PMCID: PMC9739994 DOI: 10.3390/ijerph192315727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 11/22/2022] [Accepted: 11/23/2022] [Indexed: 06/17/2023]
Abstract
In developing countries, child safety seat use remains low, which contributes to the consistently high rate of child injuries and deaths in traffic accidents. In order to protect the safety of child passengers, it is necessary to improve the public acceptance of child restraints. We improved the shortcomings of the traditional child restraints by adding some new features: 1, tightening Isofix automatically; 2, using temperature sensing, a high-temperature alarm, automatic ventilation, and cooling; 3, using pressure sensing, if the child is left alone it will set off the car alarm; 4, voice control to adjust the angle of the backrest; 5, the seat can be folded into the trunk. These functions make human-computer interaction more humane. The authors collected changes in parental acceptance of child restraints using the interview method and questionnaires. We found that acceptance increased significantly after making intelligent improvements to the child restraints. The authors used the Technology Acceptance Model to identify the key caveats influencing users' use of intelligent child restraints. Performance expectations, effort expectations, social influence, convenience, and hedonic motivation positively and significantly impacted the willingness to use intelligent child restraints, so the authors suggest that these points should be emphasized when promoting the product. The current study findings have theoretical and practical implications for smart child restraint designers, manufacturers, sellers, and government agencies. To better understand and promote child restraint, researchers and marketers can analyze how people accept child restraint based on our research model.
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Affiliation(s)
- Li Jiang
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing 100101, China
- Department of Psychology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Mei Zhao
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing 100101, China
- Department of Psychology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hao Lin
- Shanghai Woyoo Electronic Technology Co., Ltd., Shanghai 201112, China
| | - Haiyuan Xu
- Shanghai Woyoo Electronic Technology Co., Ltd., Shanghai 201112, China
| | - Xiaojiao Chen
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing 100101, China
- Department of Psychology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jing Xu
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing 100101, China
- Department of Psychology, University of Chinese Academy of Sciences, Beijing 100049, China
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Morikawa M, Yamada T, Kogo H, Sugawara M, Nishikawa A, Fukushi Y, Kato-Hirayama E, Ishioka SI, Watari H. Infant car seat use in Japan after the antepartum distribution of an educational leaflet: A prospective, nonrandomized controlled trial with a questionnaire survey. TRAFFIC INJURY PREVENTION 2020; 21:169-174. [PMID: 32154734 DOI: 10.1080/15389588.2020.1733540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Revised: 02/16/2020] [Accepted: 02/18/2020] [Indexed: 06/10/2023]
Abstract
Objective: To determine whether an antepartum educational leaflet distributed to parents before infant delivery affected the rate of infant car-seat (ICS) use 1 month after delivery, because to the best of our knowledge, only few reports have evaluated systematic attempts to improve the rate of always ICS use by mothers driving infantsMethods: A multicenter questionnaire survey targeting pregnant Japanese women seeking antenatal care at the outpatient clinics of eight hospitals was designed. Women enrolled during the first half of the study period did not receive leaflets describing ICS safety guidelines (control group). Women enrolled during the latter half of the study period received the leaflet between gestational week 35 and 37 (intervention group). All women were requested to anonymously respond to the questionnaires within 1 month postpartum. The rates of ICS use, position, and direction after delivery were compared between both groups.Results: Of the 3534 women who responded to the questionnaire survey (response rate, 81.9%), 1772 women (50.1%) were assigned to the intervention group and 1762 (49.9%) women to the control group. The rates of ICS attachments (86.8% vs. 82.4% in the intervention and control groups, respectively, p = 0.0003), always ICS use (80.5% vs. 76.2%, respectively, p = 0.0019), ICS placement on the rear seat (78.6% vs. 74.1%, respectively, p = 0.0020), and ICS placement in a rear-facing position (62.2% vs. 56.7%, respectively, p = 0.0008) were significantly higher in the intervention group than those in the control group. The motor vehicle accident (MVA) rates within 1 month postpartum were similar between the intervention and control groups (0.51% vs. 0.57%, respectively, p = 0.8229).Conclusions: Antepartum minimal intervention via the distribution of an educational leaflet recommending ICS safety guidelines was associated with increased rates of ICS attachments, always ICS use, and ICS placement on the rear seat and in rear-facing positions; however, it did not contribute to reduced MVA rates after delivery.
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Affiliation(s)
- Mamoru Morikawa
- Department of Obstetrics and Gynecology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Takashi Yamada
- Department of Obstetrics and Gynecology, JCHO Hokkaido Hospital, Sapporo, Japan
| | - Hiromasa Kogo
- Department of Obstetrics and Gynecology, Sapporo Maternity Women's Hospital, Sapporo, Japan
| | - Masaki Sugawara
- Department of Obstetrics and Gynecology, Sapporo Toho Hospital, Sapporo, Japan
| | - Akira Nishikawa
- Department of Obstetrics and Gynecology, NTT East Japan Sapporo General Hospital, Sapporo, Japan
| | - Yoshiyuki Fukushi
- Department of Obstetrics and Gynecology, Teine Keijinkai Hospital, Sapporo, Japan
| | - Emi Kato-Hirayama
- Department of Obstetrics and Gynecology, Sapporo City General Hospital, Sapporo, Japan
| | - Shin-Ichi Ishioka
- Department of Obstetrics and Gynecology, School of Medicine, Sapporo Medical University, Sapporo, Japan
| | - Hidemichi Watari
- Department of Obstetrics and Gynecology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
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