Middle School Adolescents Research Articles

Characteristics of fat-free mass among middle and high school adolescents in Yinchuan City

Objective To elucidate age-and sex-specific characteristics in fat-free mass (FFM) among middle and high school adolescents in Yinchuan City, China, and to provide a scientific basis for healthy development, chronic disease prevention and intervention in children and adolescents. Methods Using a convenient cluster sampling method, 1 175 middle and high school adolescents, aged 10 to 20 years old, from Yinchuan, China, were selected to participate in a questionnaire survey and physical examination, which involved body composition by bioelectrical impedance analysis (BIA). Results For adolescents aged 12 to 18 years, FFM and the fat-free mass percentage (FFMP) of boys increased with age (from 39.78 to 52.63 kg; 77.51% to 83.80%, respectively), the age trends of the FFM and FFMP of body parts were in the similar pattern, and were significantly higher than those of girls (all P<0.05). In girls, the FFM reached a peak of 40.96 kg at 15 years old, and decreased slightly between the ages of 15 and 18 years, the age trends of the FFM of body parts were in the similar pattern, and the FFMP decreased with age (from 75.63% to 71.91%). In addition, in girls, the age trends of the FFMP of left and right legs were the same as the general trend, while the FFMP of left and right arms increased with age. The FFMP of the trunk reached a minimum of 29.93% at 15 years old and increased from 15 to 18 years old (all P<0.05). Conclusion For middle and high school adolescents aged 12 to 18 years old in Yinchuan City, China, the distribution of FFM changed in accordance with age and gender differences, in accordance with the characteristics of the adolescents’ growth and development. 【摘要】 目的 了解银川市中学生瘦体重分布的年龄变化趋势和性别差异, 为儿童青少年健康发育、预防慢性疾病和制 定干预措施提供科学依据。 方法 于 2017—2019 年 9—12 月使用方便整群抽样的方法, 随机抽取银川市 1 175 名 12~18 岁中学生进行问卷调査、体格检査, 米用生物电阻抗分析法 (bioelectrical impedance analysis, BIA) 测量其体成分。 结果 男生总瘦体重 (fat free mass, FFM) 和总瘦体重率 (fat free mass percentage, FFMP) 随年龄增加而增加 (39.78 ~ 52.63 kg, 77.51%~83.80%), 身体各部分 FFM、FFMP 年龄趋势同总趋势, 且均髙于女生 ( P 值均<0.05); 女生 FFM 15 岁达峰值 40.96 kg, 15~18 岁略有下降, 身体各部分 FFM 年龄趋势同总 FFM 趋势, FFMP 随年龄增加呈下降趋势 (由 75.63% 下降至 71.91%)、左右下肢 FFMP 的年龄趋势同 FFMP, 左右上肢 FFMP 随年龄增加而增加, 躯干 FFMP 在 15 岁达最低值 29.93%, 15~18 岁上升 ( P 值均<0.05)。 结论 银川市 12~18 岁中学生瘦体重随年龄变化特点及性别差异, 符合其生长发育特征。

Investigating the role of family travel and family functioning in promoting Chinese adolescents’ subjective wellbeing

The present study investigated the role of family travel and perceived family functioning (i.e., cohesion and adaptability) on changes in Chinese adolescents’ subjective wellbeing (i.e., global life satisfaction, positive affect, negative affect). A pre and post-holiday repeated measures research design was employed. Middle school adolescents aged 12–15 years old from Mainland China (n = 675) were surveyed before and after the 2016 Labor holiday. Our results suggested that adolescent travelers experienced a significant increase in subjective wellbeing (SWB) from before to after the holiday. Additionally, travelers had significantly higher post-holiday SWB than adolescents who did not travel with their family during the holiday. Moreover, results of hierarchical regression analyses suggested that perceived family cohesion significantly influenced changes to adolescents’ SWB from before to after the holiday; and travel moderated the relationship between perceived family cohesion and changes in negative affect. Implications of this study, limitations, and recommendations for future research are discussed.

Alcohol Consumption among Middle School Adolescents in Rural and Urban Areas

Alcohol consumption is a global health problem. It can affect all people regardless of gender, cultural level, or age. Adolescents are in a vulnerable stage, since adolescence is characterized by the desire to experience new sensations and risks. Therefore, adolescents are the most vulnerable part of the population with respect to alcohol consumption. Formerly, rural areas have shown higher risk for alcohol consumption.

Centering Race to Move Towards an Intersectional Ecological Framework for Defining School Safety for Black Students

Across time, frameworks for assessing school safety have failed to acknowledge the harm that institutional racism in school inflicts upon Black students. Such frameworks coupled with disparate outcomes resulting from policies meant to increase safety in schools have long begged the questions, “What does school safety look like for Black youth?” and “How do we promote it?” This manuscript calls for an intersectional ecological framework that considers racial–cultural, gender and queer identity, academic, social–emotional, interpersonal, and physical safety as critical dimensions of school safety for Black adolescents in middle and high school. This paper centers race—specifically Blackness—to offer a heuristic theoretical model for moving beyond colorblind paradigms of school safety. Implications for research and practice are also discussed. Impact Statement By highlighting the impact of institutional racism on Black students’ safety, this manuscript offers important theoretical contributions to help inform how researchers define and assess school safety. This manuscript also highlights common, day-to-day systems and practices in schools that threaten the safety of Black students, and offers school leaders, teachers, and staff a vision of what school safety could look like for Black students in middle and high school.

Depressive symptom trajectories and their gender differences in adolescents from multicultural families in South Korea: an ecological perspective

ABSTRACT This study examines the depressive symptom trajectories in middle-school adolescents from multicultural families in South Korea and explores their predictors from the ecological systems perspective. Using the latent growth model, we analysed a sample from the Multicultural Adolescents Panel Survey (2014–2016). Our findings revealed that depressive symptoms increased persistently with age. Girls presented a systematically higher risk of depressive symptoms than boys. Family support, two-parent families, parental monitoring, learning, friendships, positive perceptions about the residential area, and good health reduced depressive symptoms. Parental neglect, bullying, parental involvement in children’s grade, and acculturative stress increased depressive symptoms.

부와 모의 자녀에 대한 관심감독 및 청소년의 성에 따른 청소년 자녀의 행복감

The purpose of this study was to examine the influences of fathers and mothers’ monitoring on adolescents’ happiness, and to explore the interactive effect that parents’ monitoring and the adolescent’s gender has on their happiness. A total of 2,240 adolescents in middle school responded to the study’s questionnaires, answering questions on their father’s monitoring, their mother’s monitoring, and their levels of happiness. The data were analyzed using correlation and regression analysis. The results of this study are as follows. Firstly, the father’s monitoring and the adolescent’s gender had an interactive effect on adolescent happiness. The results revealed that the effect of fathers’ monitoring on adolescent happiness was statistically significant, and particularly among boys. Secondly, mother’s monitoring and adolescent gender had an interactive effect on adolescent happiness. Similarly, the effect of mother’s monitoring on adolescent happiness was statistically significant, especially among girls. The results from this study suggest that fathers and mothers’ monitoring behaviors, as well as adolescent gender, need to be taken into consideration together in order to explain the effect that parental monitoring has on adolescent happiness. In addition, this study discusses different concepts and measurements of parental monitoring in past and current literature.

Association between depressive symptoms and subsequent injuries in early adolescents: a population-based study

Objectives Depressive symptoms (DSs) may be frequent and highly increase the risk of injuries in early adolescents (10–16 years). This study assessed the association between DSs and subsequent school and out-of-school injuries in early adolescents. Methods The study population included 1219 middle-school adolescents from north-eastern France (mean age =12.7 ± 1.3) who completed at the end of school-year a questionnaire gathering socioeconomic features (nationality, family structure, parents’ occupation, parents’ education, and family income), obesity, alcohol use, tobacco use, health status, DSs (Kandel scale higher than the median value, hence including moderate levels), and school and out-of-school injuries during the present school-year. Were only considered the DSs and confounders that had started before the school-year. Data was analyzed using multinomial logistic regression models. Results DSs were strongly associated with one or more school-physical/sports-training injuries (sex-age-adjusted odds ratio ORsa 2.08, p < 0.001), other-school-training injuries (ORsa 2.13, p < 0.01), school-free-time injuries (ORsa 2.84, p < 0.001), out-of-school-sports injuries (ORsa 1.95, p < 0.001), and traffic injuries (ORsa 3.78, p < 0.001). The risk was higher for having two or more injury categories (ORsa 4.03, p < 0.001) than for only one injury category (ORsa 1.80, p < 0.001). These results were robust and remained after further adjustment for socioeconomic features, obesity, alcohol use, tobacco use, and health status. Conclusions DSs strongly increase the injury risk in early adolescents. Injury prevention should include DSs screening and monitoring and help adolescents and their neighborhood be aware of the risk. Highlights Injuries and depressive symptoms (DSs) are frequent in early adolescents. DSs highly predict subsequent school and out-of-school injuries and cumulating several injury types. These results are robust after adjustment for socioeconomic features, being obese, alcohol use, tobacco use and poor health status. Injury prevention should include early DSs screening and monitoring and help adolescents and their neighborhood be aware of the risk.

Primary Headache Disorder Among School Students in Kuwait.

Background: Primary headaches are remarkably prevalent worldwide and are increasingly reported among children. However, the exact trend in this age group, particularly in the Gulf region, remains largely unknown.Aims and Objectives: To examine the prevalence of primary headache disorders among primary and middle school students in Kuwait.Methods: We conducted a cross-sectional study that included Kuwaiti primary and middle school children and adolescents of both genders in randomly selected schools located in two governorates in Kuwait in the 2018/2019 academic year. Prevalence and attributable burden of headaches, definite and probable migraines, definite and probable tension-type headaches, chronic headaches (≥15 days/month), and probable medication-overuse headaches were assessed using the Headache-Attributed Restriction, Disability, Social Handicap, and Impaired Participation (HARDSHIP) questionnaire for children and adolescents.Results: Of 1,485 questionnaires that were distributed, 1,089 students completed the questionnaire with a respondent rate of 73.4%. The study population consisted of 420 boys (38.56%) and 669 girls (61.43%) students with a mean age of 11.5 ± 2.11 years. The 1-year prevalence of primary headache disorders was 42.78%, with more middle schoolers reporting headaches than primary schoolers (50.37 vs. 30.48%; p < 0.02). The mean age of students with primary headaches was 11.98 ± 2.03 years in both genders. When stratified according to diagnostic criteria, migraine headaches were the most frequently reported (20.75%), followed by tension type headaches (18.8%), chronic headaches (2.75%), and probable medication-overuse headaches (0.46%). Primary headaches were significantly higher in girls compared to boys among middle schoolers (66.46 vs. 38.49%; p < 0.001); however, no significant difference between genders was noted among primary school students (33.12 vs. 22.33%; p < 0.118).Conclusion: Primary headaches are remarkably common in Kuwaiti school students, with migraine headaches being the most frequently reported type. Age and female gender may play a role in the development of primary headaches. These findings necessitate the direction of health services and research efforts toward this age group and warrant the need for further epidemiological studies.

Teachers caring for students and students caring for math: The development of culturally and linguistically diverse adolescents' math motivation

This study utilized growth curves and change models to understand the impact of student perceptions of teacher caring on the development of math motivation for an ethnically and linguistically diverse sample of adolescents in middle school (N = 1926) and high school (N = 1531). Using an expectancy-value framework, growth curves revealed declining math motivation for both middle school and high school cohorts. However, perceived teacher caring buffered against these declines and was positively associated with math self-efficacy and subjective task values. Change models revealed that perceived teacher caring at the beginning of the school year increased math motivation by the end of the year. The results shed light on the important role that student-teacher relationships play in influencing math motivation during adolescence.

Supplemental Material for Experiences of Discrimination Among Black Middle School Adolescents: A Qualitative Study

Supplemental Material for Experiences of Discrimination Among Black Middle School Adolescents: A Qualitative Study

Attitudes are associated with the drug use profiles of middle school adolescents: A latent class analysis

The association between positive and negative attitudes and drug use profiles is examined. Participants were public middle school students (N = 5213; 49.9% girls; M age= 13.2 years) in three Brazilian cities. Analysis was performed using baseline surveys of a randomized controlled trial of the #Tamojunto2.0 drug use prevention program. We validated the attitudes construct via a confirmatory factor analysis and performed a simultaneous multinomial regression with a latent class analysis. Three latent classes were identified: abstainers/low users (ABS) (63.4%), alcohol users/binge drinkers (ALC) (29.5%), and polydrug users (POL) (7.1%). An association gradient was found between attitudes and latent classes. Using ABS as reference, a direct association was identified between positive attitudes and ALC and POL. An inverse association was found between negative attitudes and POL only. Girls and older students were more likely to be ALC and POL. These findings, from a large probabilistic sample, provide guidance that drug use prevention programs should focus on deconstructing positive attitudes -mainly- and broadening negative attitudes, and should adapt their thematic content by considering the differential drug use possibilities among girls and older students.

중학교 다문화가정 청소년의 성취동기 변화궤적과 생태체계적 요인들의 관계에 관한 연구

본 연구는 중학교 다문화가정 청소년을 대상으로 성취동기의 변화궤적과 이에 영향을 미치는 요인을 생태체계적 관점에 근거하여 분석하였다. 본 연구는 한국청소년정책연구원의 다문화청소년패널조사(MAPS)의 4~6차 연도(2014~2016) 자료를 활용하였으며, 한국인아버지와 외국인어머니로 구성된 국제결혼을 통하여 한국에서 태어난 중학생 시기의 청소년 1,138명을 조사대상으로 하였다. 본 연구에 서는 먼저 무조건적(unconditional) 잠재성장모형을 활용하여 다문화가정 청소년의 성취동기의 변화궤적을 파악하였다. 무변화모형과 선형모형의 모형적합도를 비교한 결과, 선형모형이 다문화가정 청소 년의 성취동기 변화궤적 분석에 보다 적합한 모형인 것으로 나타났다. 무조건적 선형모형에 따른 분석 결과, 다문화가정 청소년의 성취동기는 매해 일정하게 증가하는 것으로 나타났다. 다음으로 생태 체계적 요인들(미시체계, 중간체계, 외부체계, 거시체계)이 다문화가정 청소년의 성취동기의 변화궤적 에 미치는 영향을 분석하기 위하여 조건적(conditional) 잠재성장모형 분석을 시행하였다. 분석 결과, 미시체계적 요인 중 어머니의 교육수준, 가족지지, 친구지지, 교사지지가 높을수록 성취동기의 초기 치가 높게 나타났다. 하지만 친구지지는 성취동기의 변화율을 낮추는 것으로 나타났다. 외부체계적 요인으로 설정된 거주지역 인식에서 거주지역에 대해 긍정적으로 인식하는 청소년일수록 성취동기의 초기치는 높지만, 변화율은 낮은 것으로 나타났다. 거시체계적 요인 중 이중문화 수용태도는 성취동기의 초기치에 긍정적으로 영향을 미치는 것으로 나타났다. 본 연구는 이러한 결과를 바탕으로 중학교 다문화가정 청소년의 성취동기를 향상시킬 수 있는 정책적·실천적 방안을 제시하였다.

Is Physical Activity Associated with Mental Health among Chinese Adolescents during Isolation in COVID-19 Pandemic?

BackgroundRestricted outdoor activities and online learning during COVID-19 pandemic may pose threats on the physical and mental health of Chinese adolescents in middle schools. The study was to explore the relationship of Physical Activity (PA) and Sedentary Time (SED) with mood states among Chinese adolescents during the pandemic.MethodsA total of 4898 adolescents (16.3 ± 1.3 years old) from 49 middle schools in 13 urban and rural areas in Yan’an, China volunteered to participate in this study and completed online questionnaires. International Physical Activity Questionnaire (IPAQ) were used to measure PA and SED, and Profile of Mood States were used to evaluate mood states. We used Mann—Whitney U-test and Kruskal—Wallis test to assess differences in PA and SED in different sex and grade group, respectively. Mixed linear regression was used to analyze the relationship between PA/SED and mood states.ResultsParticipants in our study accumulated 23.4 ± 52.5 min of moderate-to-vigorous PA and 363.6 ± 148.4 min of SED per day. The mood states of boys were better than that of girls (p < 0.01). The mood states of the students in Senior High School Grade 3 were at the highest level of mood disturbance. Higher levels of PA were significantly associated with lower levels of total mood disturbance in this population (High PA group according to IPAQ: B = −3.22, SE = 0.40, p < 0.001; Moderate: B = −1.47, SE = 0.37, p < 0.001, compared to Low PA group).ConclusionChinese adolescents maintained a sedentary lifestyle during the COVID-19 pandemic. Girls and students in Grade 3 Senior High School had higher level of mood disturbance. More PA was associate with improving mood state among adolescents in the pandemic. The present study may assist policymakers and healthcare professionals understand PA and mood states of Chinese adolescents during the epidemic and take targeted actions in case of emergencies in future.

Lifestyle habits among a sample of middle school adolescents in Tunisia

Abstract Introduction Adolescent health is a major global concern today. In fact, adolescence is the period of life where different risky behaviors can take hold and is therefore the best prevention phase to guarantee healthy lifestule in adulthood. We aimed to assess the lifestyle of middle school adolescents and to highlight the main behaviors such as the eating habits, the physical activity and the personal hygiene. Methods We carried out a cross sectional study among a sample of adolescents from December 2017 to January 2018 and we involved two middle school schools in the region of Monastir in Tunisia. The questionnaire GSHS (the Global school-based student health survey) was used. Results In total, 802 participants were enrolled with a mean age of 13.6 ±1.9 years, ranged from 11 to 16 years old. Females represented 51.9% of the study population. More than one third of the students (36%) reported rarely or never eating breakfast with a significant difference in girls more than in boys (62.8% vs 37.2%, p &amp;lt; 10-3). Almost half of students (46.2%) reported drinking sugary sodas at least once a day and 86.3% of them reported consuming fast food more than two times per week. In addition, 59.4% of middle school students reported eating fruit more than twice a day and 24.3% eating vegetables at least three times a day. Regarding physical activity, our results showed that 24.4% of middle school students were physically active (1 hour minimum during the day) every day for the last 7 days, boys more than girls (56.5% vs 43.5%, p = 0.02). In addition, 39.7% of students declared they sit at least three hours a day. As for personal hygiene, our study found that 9.3% of students never, or rarely, washed or brushed their teeth; boys more than girls (69.3% vs 30.7%, p = &amp;lt;0.001). Conclusions Our results provide additional evidence on the need to combat sedentary lifestyle and encourage healthy nutrition and physical activity among adolescents. Key messages Understanding the health needs and concerns of young people contribute to implement effective health programs. Interventions in young people should act on various aspects of the lifestyle to ensure an optimal effect.

Adolescent Physical Activity at Public Schools, Private Schools, and Homeschools, United States, 2014

IntroductionPhysical activity overall and during school-related opportunities among homeschool adolescents are poorly documented.MethodsWe used data from the National Cancer Institute’s Family Life, Activity, Sun, Health, and Eating (FLASHE) study, a national sample of parent–child dyads. We examined reported frequency of physical activity in middle-school and high-school respondents (N = 1,333). We compared the overall physical activity by school type (ie, public school, private school, and homeschool), compared school-related contexts (eg, recess, physical education [PE] class), and tested for level of physical activity by school for those reporting PE.ResultsMiddle-school homeschool adolescents reported less physical activity during school hours compared with public school, but not private school, adolescents. Physical activity was not different by school type for out of school or weekends. Physical activity of high-school homeschool adolescents was not different from that of high-school adolescents at traditional schools; homeschool adolescents in both middle and high school reported less physical activity in PE compared with public and private school adolescents. Other school-related contexts of physical activity were not different by school type. More homeschool students reported not having PE (middle school, 54.8%; high school, 57.5%) compared with public (middle school, 18.7%; high school, 38.0%) or private schools (middle school, 13.5%; high school, 41.5%).ConclusionHomeschool adolescents in middle school reported less physical activity compared with middle-school adolescents in traditional schools during school hours, likely because of having fewer PE classes and less physical activity during PE.

Investigation of Relationship Between Levels of Self-Efficacy and Self-Care in Middle School Adolescents in Turkey

: In this research it is aimed to investigate the relationship between the self-efficacy and self-care levels in adolescents which are aged between 11 - 15 years old. For this purpose, the socio-demographic characteristics of the students are utilized including, age, grade, gender, longest residence, family type, current residence location, family structure, academic success status, income-outcome balance, chronic diseases, education level of mother, education level of father, mother profession, father profession of students. Accordingly, the most known scales namely general self-efficacy scale and self-care agency scale were considered to investigate related characteristics of adolescents from Mersin Province of Turkey. It is implied from results that there is a significant relationship between the self-efficacy scale scores with the academic success status, family type and family structure characteristics of these adolescents. As well, there existed a significant relationship between the mean scores of the self-care scale with the age, grade, education level of their mothers, economic status of their families, academic success status and their family types. Based on the results, especially in the case of the single-parent type family structures, conducting a democratic family discipline and academic success status of students lead to increase in the self-efficacy belief of adolescents. In the similar way, the education level of mothers, economic status of the families, achieved high academic success and holding a democratic family discipline resulted in the high self-care agency level of the adolescents. Additionally, as the self-efficacy level of the adolescents increased, the self-care agency level of the adolescents may be increased additionally.

Think Big and Move up? The Socio-Economy of Adolescents’ Aspirations

Current political discourse places a heavy emphasis on thinking big and working hard as ways for children to overcome structural barriers in life. Inspired by this discourse, this research explores the formation of aspirations, based on qualitative research, among adolescents in middle school from different socio-economic statuses in Ankara, Turkey. It contributes to the overall aspiration literature in the world by unpacking the process and the scope of aspiration formation; to the limited available research on adolescent aspirations in Turkey; and to adolescent policy development by proposing recommendations to better support adolescents in pursuing their aspirations. Findings show that adolescents from different socio-economic backgrounds have very different aspirations for their futures, which are reflective of their backgrounds in a stratified society. Adolescents with high socio-economic status aspire to have a luxurious life, whereas their peers with middle socio-economic status are more interested in building families, and their peers with low socio-economic status are focused on living a life different than what they currently live, from which they can also save their family. All adolescents focus on accumulating cultural capital as a way to realize these aspirations. Exposing adolescents to different alternatives may enrich what they look for, but what they aspire to see will remain stratified unless the inequalities among adolescents are addressed. As long as the externality they live in is stratified, their habitus will act as a convener for social stratification. A holistic understanding of aspirations, which goes beyond occupations, and a multi-dimensional support mechanism is required for the aspirations to be a useful tool to lower the consistency of the social stratification system.

Team clinic: Expansion of a multidisciplinary care model for adolescents with type 1 diabetes

BackgroundAdolescent and young adults (AYA) with Type 1 Diabetes (T1D) experience more difficulty with glycemic control than patients in all other age groups. The shared medical appointment (SMA) model has been effective in multiple healthcare populations, but the feasibility and effectiveness of SMA in AYA patients with T1D is unclear. MethodsThis research leverages the team's multidisciplinary expertise to develop an engaging intervention toolkit and test the implementation of the Team Clinic care model for the treatment of T1D among middle school adolescents in a large urban children's hospital serving an economically, racially and ethnically diverse population. In Phase 1, the team will manualize the Team Clinic care model into an engaging, age-appropriate educational and intervention toolkit. In Phase 2, the team will conduct a randomized clinical trial to test the feasibility and usability of the toolkit from the provider perspective (team member satisfaction; clinical efficiency; compliance with American Diabetes Association, American Association of Diabetes Educators, and California Children's Services standards; and payor-level cost data) and the preliminary efficacy of the intervention toolkit on patient- and family-level outcomes (attendance, acceptability/satisfaction with care, patient-level cost data, diabetes outcomes, diabetes family conflict, diabetes distress, and depression). DiscussionAYA patients with T1D often receive care in clinics and institutions with limited resources and time. This research tests the feasibility and efficacy of an innovative and potentially cost-effective SMA model to address the unique needs of underserved populations, while meeting national and state clinical standards.Trial registrationThe study is registered with ClinicalTrials.gov (Protocol Record: NCT04190368).

Prevención del acoso escolar en adolescentes

Objectives: The general objective is to prevent bullying among middle and high school adolescents. The specific objective are: 1) Identify the level of bullying among middle and high school adolescents. 2) Promote peaceful social relationships among middle and high school adolescents. Methodology: The type of research is quantitative, not experimental, descriptive, and comparative. In order to identify the level of bullying in middle and high school adolescents, the Cisneros School Bullying self-test was applied to students. Contributions: The main contribution is the identification of bullying among middle and high school adolescents, thus proposing programs for the formation of relations based on peace and conflict resolution in a peaceful way among adolescents from middle and high school, thereby will offer the prevention of antisocial and criminal behaviours, training people capable of generating social skills for coexistence.

Prevalence of Post Traumatic Stress Disorder among School-age Adolescent

Aim: After a traumatic event, the person can develop post-traumatic stress disorder (PTSD), the purpose of the study is to assess the prevalence of PTSD in adolescents in public middle schools of the prefecture of Salé in Morocco and study anxiety and depression which are the comorbid disorders of the PTSD. The survey was carried out from March to June 2017.&#x0D; Methods: 523 students were selected by the cross-sectional method from fifteen schools that were randomly selected, the age of the students vary between 12 and 17 years. For the survey, standardized questionnaires (the socio-demographic data, the Life Events Checklist, the CPTS-RI (Children's Post Traumatic Stress Reaction Index), the STAIY (State Trait Inventory Anxiety Form Y) and the CDI (Children Depression Inventory) were used which were filled in by the students.&#x0D; Results: The prevalence of PTSD was 70.4% in the students who have PTSD. We found that the prevalence in boys was 46.74%, while in girls it was 53.26%. In addition to that, 81% of students found to be anxious and 51.8% of students have depression.&#x0D; Conclusion: There is a high prevalence of post traumatic stress disorder among adolescents, there are practical implications for the support and care of these adolescents.