Under the current circumstance that more and more students are being recruited in universities,ways have to be explored to promote the development of our major.The following three points including strength in construction of teaching staff,management of teaching quality and active participation in administration of students are suggested to be attempted,in combination with many other good ideas.

Based on our long-time teaching practice,we tried to explore some measures of the teaching innovation about maternal and child health care,in terms of the innovation of course system,the compiling of teaching materials and the updating of teaching methods and skills.Through the discussion,we aimed to enhance our students' integrated qualities,cultivate and bring up more and more capable medical students of new-pattern fit for the social demands.

Objective To explore the effect of babies’ nutritional status on their growth and intelligence about 3 years old. Method With stratified random sampling,according to the data of height and weight,obtained from general survey of nutritional status in all infants aged 0-1 in one county of Fuyang town,Anhui Province in April 2004,we classified the infants into three groups,corresponding to≥ x + s,

Abstract Unhealthy eating behaviors among adolescents are common, and psychological behavior problems are prominent. The paper examines the status and associations underlying unhealthy eating behaviors and psychological behavior problems in adolescents from border multi ethnic areas, and further discusses the importance of research in border area involving multi ethnic adolescents, and highlights its significance in the context of constructing healthy schools in border areas,so as to provide a basis for promoting effectively healthy school environments in border areas of China.

Objective To analyze the correlation between elective cesarean delivery and duration of breastfeeding in Ma'anshan city from 2013 to 2014. Methods From May 2013 to September 2014, a total of 3 474 pregnant women with the first prenatal checkup were recruited from Ma'anshan maternal and child health care hospital. Finally, 3 109 pregnant women were included after exclusion of those with terminated pregnancies, adverse birth outcomes, twin or multiple pregnancies, breech traction, breech midwifery and loss of delivery information. Demographic data of pregnant women, mode of delivery and breast feeding of children were collected through questionnaires and hospital records. Logistic regression model was used to analyze the relationship between elective cesarean delivery and duration of breastfeeding in children, with the mode of delivery as independent variable and the duration of breastfeeding as dependent variable. Results The age of 3 109 subjects was (26.6±3.6) years old, the rate of vaginal delivery was 51.1% (1 589), and the rate of elective cesarean delivery was 46.4% (1 443), among which the rate of non?indicative elective cesarean delivery was 26.4% (820), the rate of indicative elective cesarean delivery was 20.0% (623), and the rate of emergency cesarean delivery was 2.5% (77). The proportion of breastfeeding lasting until 4, 12 and 18 months was 45.0% (1 348/2 998), 23.7% (702/2 962) and 5.2% (154/2 944), respectively. After adjusting the confounding factors, compared with vaginal delivery, the OR (95%CI ) values of breastfeeding for 4 months in indicative elective cesarean delivery and non?indicative elective cesarean delivery women were 0.870(0.714-1.059), 0.795(0.665-0.949), and the OR (95%CI) values of breastfeeding for 12 months were 0.772(0.611-0.975), 0.755(0.610-0.934), respectively. Conclusion Elective cesarean delivery may result in shorter duration of breastfeeding in children.

Objective To analyze the correlation between elective cesarean delivery and duration of breastfeeding in Ma'anshan city from 2013 to 2014. Methods From May 2013 to September 2014, a total of 3 474 pregnant women with the first prenatal checkup were recruited from Ma'anshan maternal and child health care hospital. Finally, 3 109 pregnant women were included after exclusion of those with terminated pregnancies, adverse birth outcomes, twin or multiple pregnancies, breech traction, breech midwifery and loss of delivery information. Demographic data of pregnant women, mode of delivery and breast feeding of children were collected through questionnaires and hospital records. Logistic regression model was used to analyze the relationship between elective cesarean delivery and duration of breastfeeding in children, with the mode of delivery as independent variable and the duration of breastfeeding as dependent variable. Results The age of 3 109 subjects was (26.6±3.6) years old, the rate of vaginal delivery was 51.1% (1 589), and the rate of elective cesarean delivery was 46.4% (1 443), among which the rate of non?indicative elective cesarean delivery was 26.4% (820), the rate of indicative elective cesarean delivery was 20.0% (623), and the rate of emergency cesarean delivery was 2.5% (77). The proportion of breastfeeding lasting until 4, 12 and 18 months was 45.0% (1 348/2 998), 23.7% (702/2 962) and 5.2% (154/2 944), respectively. After adjusting the confounding factors, compared with vaginal delivery, the OR (95%CI ) values of breastfeeding for 4 months in indicative elective cesarean delivery and non?indicative elective cesarean delivery women were 0.870(0.714-1.059), 0.795(0.665-0.949), and the OR (95%CI) values of breastfeeding for 12 months were 0.772(0.611-0.975), 0.755(0.610-0.934), respectively. Conclusion Elective cesarean delivery may result in shorter duration of breastfeeding in children.

Abstract In recent years, much attention has been paid to recess activity in school and its impacts on child and adolescent health. Students spent most of their time in schools, thus recess offers children the opportunity to be physically active, which is beneficial for their cognitive, physical, social, and emotional well being. The review mainly discusses the impact of recess activity on child physical and mental health, including obesity, myopia, cognition and social contact, so as to provide a theoretical basis for creating school recess activities conducive to the health of children and adolescents.

Objective: To determine the possible relations between hair cortisol concentration (HCC) as a biomarker of chronic stress and childhood overweight and obesity. Methods: Children from grade 1 to 3 from 2 primary schools in Bengbu were invited to participate in the study; and those who suffer from mental disorders, endocrine diseases and those who took hormone drugs were excluded. Parental questionnaire was implemented to collect information on physical activity, screen time, sleep duration, sugar-beverage consumption, as well as socio-economic status. Height and weight were examined. Eligible hair samples from 1 263 children (598 boys and 665 girls) were obtained, and the cortisol content was determined. Multivariate logistic regression model analysis was recruited to examine the association between HCC quartiles and overweight and obesity among boys and girls, respectively. Results: HCC in P₅₀ (P₂₅-P₇₅) among girls and boys was separately 11.86 (10.57-13.15) and 11.71 (10.54-13.09) µg/kg (Z=-0.886, P=0.376); HCC in P₅₀ (P₂₅-P₇₅) among non-overweight, overweight and obesity boys was separately 11.62 (10.45-12.82), 12.24 (10.88-13.55) and 12.30 (10.99-13.53) µg/kg (χ²=8.24, P=0.016); HCC in P₅₀ (P₂₅-P₇₅) among non-overweight, overweight and obesity girls was separately 11.35 (10.06-12.62), 12.07 (11.04-13.21) and 12.59 (11.12-13.63) µg/kg (χ²=36.16, P<0.001). After age, physical activity, screen time, sleep duration, sugared beverages and socio-economic status adjusted, compared with HCC in Q1 level, girls whose HCC in Q2, Q3 Q4 level had higher rates in overweight, with OR (95%CI) at 1.10 (1.04-3.32), 2.59 (1.51-4.45) and 3.16 (1.79-5.57), respectively. Girls with HCC in Q3 and Q4 level had higher rates in obesity, with OR (95%CI) at 2.22 (1.16-4.26) and 5.62 (3.04-10.41). Among boys, highest quartiles in HCC was risk factor for overweight, OR (95%CI) was 2.14 (1.18-3.90). Conclusion Hair cortisol had a significant relation with overweight and obesity in 6-9 years old childhood especially among girls.

Objective: To describe digital media use in college students during the coronavirus disease 2019(COVID-19) outbreak. Methods: A structured self-administered electronic questionnaire was designed and admin istered during February 4 to 12, 2020, collecting information on the use time of digital media and anxiety symptoms of college students in China during the COVID-19 outbreak. Data was analyzed by Chi-square test, univariate and multivariate Logistic regression models. Results: A total of 11 787 university students were recruited. The detection rate of anxiety symptoms was 17.8%. The percentages of screen time ≤2, >2-4 and >4 h/d were 21.3%, 31.4% and 47.3%. The proportions of mobile phone use time ≤2, >2-4 and >4 h/d were 14.6%, 33.2% and 52.3%. The proportion of browsing information regarding COVID-19 ≤1, 1-2 and >2 h/d were 66.6%, 19.4% and 13.9%. The results of Logistic regression analysis revealed that the detection rate of anxiety symptoms was lower among the students having 2-4 h/d of screen time(OR=0.70, 95%CI=0.61-0.81), but higher among the students having more than 4 h/d of screen time(OR=1.13, 95%CI=1.00-1.28) compared with those having ≤2 h/d of video usage time. Compared with the mobile phone usage ≤2 h/d group, the detection rate was lower among >2-4 h/d group(OR=0.78, 95%CI=0.66-0.91). However, anxiety symptoms were more likely to occur in the group of > 4 h/d(OR=1.20, 95%CI=1.04-1.39). The detection of anxiety symptoms was higher in the group with more browsing time. The OR for anxiety symptoms detection rate was 1.55(1.38-1.75) among the students with >1-2 h/d of browsing information regarding COVID-19 and 2.15(1.89-2.44) among the students with >2 h/d of browsing information regarding COVID-19 compared with those with ≤1 h/d of browsing information regarding COVID-19. Conclusion During the epidemic period, the use of >2-4 h/d digital media helps to reduce the occurrence of anxiety symptoms. But the use of computers and mobile phones for more than 4 h/d is associated with higher level of anxiety symptoms among college students. Less screen time spent on fact-checking on COVID-19 might help reduce anxiety sympotoms among college students.

Objective To describe the epidemiological characteristics on the supplement of folic acid in progestation and early pregnancy,and to probe the protective effects of supplement of folic acid in early pregnancy against pregnant depression,in Ma’anshan city,Anhui province. Methods In this cohort study,5 150 subjects who had their first antenatal examination at Ma’anshan Maternal and Child Care Centers were recruited under informed consent,from October 2008 to October 2010. All the information were collected through questionnaires in the first,second and third trimesters respectively. A“Center for Epidemiological Studies Depression Scale(CES-D)”was used to assess the mood of depression in the second questionnaire. Single factor analysis and the unconditional multivariate logistic regression were applied to analyze the association of supplement folic acid in peri-conceptional period and pregnancy depression. Results In the study,the prevalence of those who had never taken the supplement folic acid but only the supplement folic acid in progestation and supplement in the first-trimester,or supplement in the peri-conceptional period were 27.3%,0.5%,27.4%and 17.9%,respectively. The incidence of pregnancy depression was 4.8%(247/5 150). Data from logistic regression analysis showed that,supplement of folic acid only in the first-trimester or in the peri-conceptional period were negatively associated with pregnancy depression even after adjustment for potential confounders. The adjusted odds ratio were 0.63(95%CI:0.44-0.90) and 0.61(95%CI:0.39-0.95)respectively. Conclusion Supplement of folic acid in peri-conceptional period could be a preventive factor for pregnancy depression.