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Objective:To understand the basic nutrition situation of primary and secondary school students in the urban area of Yichun City， and to provide corresponding strategies and measures for the improvement of the nutrition of children and adolescents. Methods:A stratified sampling method was used to select the urban primary and secondary school students in 10 counties （cities， districts） in Yichun City from 2019 to 2020 for physical examinations to assess their nutritional status. Results:Among 8 921 primary and middle school students surveyed， 62（0.69%） were stunted in growth， 735（8.24%） were emaciated， 1 130（12.67%） were overweight， and 662（7.42%） were obese. The weight loss rate of primary school students was the highest （10.54%， 360/3 414）， followed by junior middle school students （7.07%， 214/3 026）， and senior high school students （6.49%， 161/2 481）. The difference was statistically significant （χ2=39.51， P<0.05）. The proportion of unbalanced nutritional status of boys was 35.66% （1 578/4 425）， which was higher than that of girls （22.49%， 1 011/4 496）， and the difference was statistically significant （χ2=187.91， P<0.01）. Conclusion:Both malnutrition and overweight/obesity exist in primary and middle school students in Yichun City. We should pay special attention to boys and lower grade students， and intervene different nutritional problems.
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Objective To understand the correlation between the sleep duration and the dangerous self-injurious behaviors of junior school students in Shanghai.Methods By using systematic sampling methods, 21 junior schools were randomly selected from 17 districts in Shanghai.By using simple random sampling methods, 2 classes were randomly selected from each grade of students from each of the selected junior schools.By using the Survey Questionnaire for Health-related Behaviors of Teenagers in Shanghai(junior school students'edition), questionnaire surveys were performed to investigate the sleep duration and the related dangerous self-injurious behaviors of junior school students.Results A total of 6 414 students (of which male students occupied 49.1% and female students occupied 50.9%) were surveyed and the pass rate of questionnaires was 99.55%.The average age of the students surveyed was 13.28±1.84.21.1% of the students surveyed slept less than 7 hours every day, 69.6% thereof slept 7-8 hours every day and 9.3% thereof slept 9 hours or more every day.In the past 12 months, 47.2% of the students surveyed often felt lonely,71.3% thereof felt unhappy because of study stress or unsatisfactory school records and 9.3% thereof cancelled their daily activities for 2 weeks or more because of feeling sad and desperate.11.7% of the students surveyed conducted self-injurious behaviors, 11.9% thereof contemplated suicide, 6.9% thereof made plans for suicide.The sleep duration of the students surveyed was negatively correlated with the rate of psychological depression related to self-injuries as well as the self-injurious behaviors thereof.Conclusion Lack of sleep is common among junior school students in Shanghai, and sleep insufficiency is correlated with self-injurious psychology and behaviors.which suggests that it is very much necessary to provide junior school students with education that improves sleep.
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Objective To understand the characteristics of problem behaviors among junior middle school students in northern Guizhou rural areas to provide reference for formulating the intervention measures .Methods The Chinese middle school students mental health scale and the self-made externalizing behavior problem questionnaire were adopted to perform the questionnaire sur-vey on left-behind kids of 6 junior middle schools .Results In the implicit problem behavior ,the scores of girls in hostility ,interper-sonal ,depression factor ,anxiety and total score were higher than those of boys ,and the each factor score was increased with grade ;in the explicit behavioral problems ,the occurrence rates of smoking ,drinking and gambling in boys were higher ,the detection rates of smoking and gambling were higher than those in students ,the occurrence rates of suicidal idea and leaving from home idea in students were 13 .1% and 22 .2% respectively ,in which the occurance rates of girls were higher than those in boys .The detection rate of sex related behaviors in boys was higher than that in girls .Conclusion The problem behaviors appear the gender and grade differences among left-behind kids in northern Guizhou rural areas .The differential mental health education should be carried out according to different target behaviors .
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Objective To test psychometric properties of the PTSD checklist-civilian version(PCL-C) among junior school students from earthquake-hit region.Methods PC L-C Chinese Version, Rosenberg self-esteem scale and SCL-90 were utilized to assess 560 junior school students from earthquake-hit region.Results Firstly,the internal consistency of the total scale and three subscales were qualified, the coefficient alphas were 0.890,0.734,0.789 and 0.722, respectively; 307 participants, from the first samples, engaged in the second test two months after the first assessment.The test-retest stability was re-experiencing 0.40(P ＜ 0.01 ) ,avoidance 0.45 (P＜ 0.01 ), hyper-arousal 0.448 (P ＜ 0.01 ), total scale 0.535 (P ＜ 0.01 ), respectively.Secondly, the results of criteria validity showed PCL-C and its three subscales had negative correlation with self-esteem (r =-0.192 ～-0.299, P ＜ 0.01 ), and had positive-related with SCL-90 and its subscales of depression, anxiety, and psychotic (r=0.563 ～0.775, P＜0.01 ).Finally,the results of empirical validity revealed that based on the score on PCL-Ccould differentiate those people who have significant different scores on SCL-90.Conclusions The PCL-C hadgood reliabilities and validities,which could be used to assess the severity of PTSD.