Objective To investigate the condition of over-using electronic product of young school-age children and the influencing factors of prolonged screen time after school in Shenzhen, so as to provide evidence for intervention of children's electronic product use. Methods Cluster sampling method was used to investigate the use of electronic products among the second grader in 18 primary schools in a district of Shenzhen. Results 47.4% of children owned electronic products, 46.8% of children had regular contact with electronic products before the age of 5, 15.7% of children exceeded the recommended screen time of 2 hours per day on average, and 34.8% of children had screen time of more than 2 hours per day on weekends. The main purpose of using electronic products was to do online homework （60.5%）, followed by entertainment/chatting （15.0%）. Logistic regression analysis results showed that father's screen time >2 h/d （OR=1.874）, mother's screen time >2 h/d （OR=1.815） might be risk factors for boys' screen time timeout, but sufficient mother's company time （>2.0 h/d）（OR=0.360, 0.244） might be protective factors for boys. Father's screen time >2 h/d （OR=2.202） and mother's screen time>2 h/d （OR=2.119） might be the risk factors for girls' screen time timeout. Conclusion Electronic products are widely used by lower grade pupils in Shenzhen. Parents should pay more attention to reduce their own screen time and increase company time to promote the children's physical and mental health development.

Objective To analyze the prevalence and influencing factors of dyslipidemia in the physical examinees. Methods Taking the personnel who participated in physical examination in Air Force Hangzhou Secret Service Rehabilitation Center from December 2017 to December 2019 as the survey object, the demographic characteristics, physical examination and laboratory examination indexes were collected and sorted out, the dyslipidemia of the physical examinees was counted, and the influencing factors of dyslipidemia were analyzed by multivariate Logistic regression analysis method. Results A total of 5 456 subjects were included in this study, with an average age of （40.15±9.31） years. Among them, there were 2 096 patients with dyslipidemia, and the prevalence rate was 38.42%. Among the various dyslipidemia indexes, only 1 abnormality accounted for 20.38%, and 2 or more abnormalities accounted for 18.04%. Multivariate Logistic regression analysis showed that advanced age （OR=1.765）, male （OR=1.811）, BMI≥24.0 kg/m² （OR=2.546）, smoking （OR=1.928）, family history of dyslipidemia （OR=1.755）, hypertension （OR=2.748） were risk factors for dyslipidemia of physical examiners, physical exercise （OR=0.447） was a protective factor for dyslipidemia of physical examiners. Conclusion The prevalence of dyslipidemia in healthy people is high. Male, advanced age, smoking, family history of dyslipidemia, overweight / obesity and hypertension are the risk factors of dyslipidemia. It is suggested to carry out targeted blood lipid monitoring and lifestyle intervention to prevent the occurrence of cardiovascular diseases.

Objective To understand the distribution characteristics of cardiovascular disease risk factors among health examination population aged ≥ 40 years old in Haikou, so as to provide reference information for the prevention and treatment of cardiovascular disease in this area. Methods The demographic characteristics and cardiovascular disease risk factors （elevated blood pressure, elevated total cholesterol, elevated blood glucose, overweight or obesity, smoking, drinking, unhealthy diet and lack of physical exercise） of the population aged ≥ 40 years old in Haikou who underwent physical examination in a Hospital of Haikou from March to June 2021 were investigated, and the distribution characteristics of cardiovascular disease risk factors were analyzed. Results A total of 1 319 respondents were included, including 692 males and 627 females. Among them, 673 respondents had cardiovascular disease risk factors, accounting for 51.02%, there were 469 cases （69.69%） with one high-risk factor, 119 cases （17.68%） with two high-risk factors, and 85 cases （12.63%） with three or more high-risk factors. Male, 70-78 years old, villages and towns, junior high school and below, unemployed or retired people had a higher proportion of cardiovascular disease risk factors （P<0.05 or P<0.01）. There were 97 cases （14.41%） had elevated blood pressure, 92 cases （13.67%） had elevated total cholesterol, 82 cases （12.18%） had elevated blood glucose, 120 cases （17.83%） had overweight or obesity, 136 cases （20.21%） had smoking, 158 cases （23.48%） had drinking, 109 cases （16.20%） had unhealthy diet, and 197 cases （29.27%） lacked physical exercise. Conclusion The risk factors of cardiovascular disease among health examination population aged ≥ 40 years old in Haikou are widespread, the aggregation of different factors show in some populations.

Objective To analyze the changing trend of diabetes mortality and untimely death probability in Guangdong Province, so as to provide reference for future research and prevention of diabetes mortality. Methods Data were collected from Guangdong Death Cause Monitoring System from 2005 to 2015, and the mortality, standardized mortality, untimely death probability, and annual percent change （APC） of diabetes were calculated. Chi-square test was used for the comparison of rates, Student's t test was used for the APC. Results From 2005 to 2015, the proportion of diabetes mortality in the total mortality in Guangdong Province decreased from 1.40% to 1.30% （APC=-1.09%, P<0.01）; The mortality rate of diabetes decreased from 7.13/100 000 to 6.26/100 000 （APC=-1.69%, P<0.01）; The standardized mortality rate of diabetes decreased from 10.37/100 000 to 7.79/100 000 （APC=- 3.15%, P<0.01）; The untimely death probability of diabetes decreased from 0.47% to 0.32% （APC=-4.11%, P<0.01）; The standardized mortality and untimely death probability of diabetes in 21 cities of Guangdong Province decreased year by year （all P<0.01）. Conclusion Although the overall mortality of diabetes in Guangdong Province is declining, it is still the main disease endangering the health of residents. There is a need for further sustained implementation of universal interventions.

Objective To explore the epidemiological characteristics and intestinal flora distribution characteristics of newly diagnosed colorectal cancer in Pingdingshan City. Methods Newly diagnosed colorectal cancer cases admitted to a hospital in Pingdingshan City from January 2020 to June 2021 were selected as the research subjects （case group）, and physical examination persons at a ratio of 1∶1 during the same period with the same age ± 0.5 years and the same gender in the same hospital were selected as the healthy controls （control group）. Data were collected from the two groups of subjects and feces were collected for the detection of intestinal flora. Descriptive analysis method was used to analyze the characteristics of newly diagnosed colorectal cancer cases, and comparative analysis method was used to compare the distribution and quantity of the main intestinal flora between the two groups. Results A total of 141 newly diagnosed colorectal cancer cases and 141 healthy subjects were included in this study. In the case group, there were 83 males and 58 females, with a male-to-female ratio of 1.4∶1, the age of the cases ranged from 34 to 81 years old, with an average of （53.21±7.24） years old, the proportion of patients aged 50-59 years was the highest, and the cases of Han nationality accounted for 88.65%. Among them, 39.72% had junior high school education or below, most of the lesions were in the rectum （51.77%）, and the most cases were clinical stage Ⅱ （63.83%）. The age of the control group was 35-81 years old, with an average of （54.01±7.68） years old, 83 males and 58 females. There was no significant difference in the mean age and gender distribution between the case group and the control group （both P>0.05）. Compared with the control group, the number of Lactobacillus, Peptococcus, Yeast, and Bifidobacterium in newly diagnosed colorectal cancer cases decreased significantly, while the number of Escherichia coli, Enterococcus, and Staphylococcus increased significantly, and the differences were statistically significant （all P<0.01）. There were significant differences in the distribution of intestinal flora in patients with newly diagnosed colorectal cancer at different clinical stages （P<0.01 or P<0.05）, the number of Lactobacillus, Enterococcus, Yeast and Bifidobacterium in patients with stage III was less, and the number of Escherichia coli, Enterococcus and Staphylococcus was more. Conclusion Patients with newly diagnosed colorectal cancer in Pingdingshan City have certain epidemiological characteristics,males are more than females, patients aged 50-59 are the majority, and lesions are more common in the rectum, there is intestinal flora imbalance. Effective prevention and treatment measures should be taken according to the epidemiological characteristics and flora distribution characteristics to reduce the incidence of postoperative intestinal obstruction and promote patients to obtain good prognosis.

Objective To study the empathy ability and its influencing factors of nursing staff, so as to provide reference for improving empathy ability of nursing staff. Methods A third-level hospital and a second-level hospital among public hospitals of Lianyungang were selected by simple sampling method from July to August 2021, the empathy ability and job burnout of nursing staff in each department of the two hospitals were investigated. The data of gender, age, education, hospital level, department, professional title, contract nature, length of service, night shift frequency, and relevant training and learning experience of all nursing staff were collected. The status quo of empathy ability was descriptively analyzed, the influencing factors of empathy ability were analyzed by single factor and multiple stepwise regression analysis. Results A total of 349 nurses were collected with effective questionnaires, the total score of empathy ability was （96.75 ± 12.17）, including viewpoint selection dimension （51.23 ± 9.81）, emotional nursing dimension （32.60 ± 7.14） and transposition thinking dimension （11.05 ± 2.96）. The results of multiple stepwise regression analysis showed that age （β'=0.133）, education （β'=0.281）, department （surgery β'=0.109, internal medicine β'=0.163, obstetrics and gynecology β'=0.096, rehabilitation β'=0.456, operating room β'=0.280, other departments β'=0.263）, contract nurses （β'=-0.109）, length of service （β'=0.087）, night shift frequency （β'=-0.487）, relevant training and learning experience （β'=0.369） and job burnout （β'=0.357） were the influencing factors of empathy ability of nurses. Conclusion The empathy ability of nursing staff is affected by many factors. It is necessary to take targeted intervention measures according to different individual situations, the purpose of improving empathy ability can be achieved through relevant training and learning and reducing job burnout.

Objective To explore the current situation of cervical spondylosis among medical staff in Zhengzhou and investigate the related factors affecting the occurrence of cervical spondylosis. Methods The current status of cervical spondylosis among medical staff in two tertiary hospitals and two secondary hospitals was investigated by simple random sampling method from March to September 2021. The univariate and multivariate Logistic regression analysis method was used to analyze the related factors affecting the occurrence of cervical spondylosis among medical staff. Results This study finally obtained the results of questionnaire survey and cervical health status survey of 3 150 medical staff. There were 1 497 males, accounting for 47.52%, and 1 653 females, accounting for 52.48%, aged 22-59 years, with an average of （40.02±6.31） years. A total of 970 medical staff were diagnosed with cervical spondylosis, accounting for 30.79%. Multivariate Logistic regression analysis showed that the medical staff who were aged 41-50 years （OR=3.221）, 51-59 years （OR=4.521）, non-surgical department （OR=2.221）, surgical department （OR=4.654）, 6-10 years of service （OR=2.331）, more than 10 years of service （OR=3.002）, often work overtime （OR=1.365）, often night shift （OR=2.554） had high possibility of cervical spondylosis, while the medical staff who often exercised （OR=0.370） had low possibility of cervical spondylosis. Conclusion The incidence of cervical spondylosis among medical staff in Zhengzhou is high. Age, department, physical exercise, and working life will increase the risk of cervical spondylosis. It needs to arouse the attention of hospitals, departments and individuals. Effective intervention should be carried out through reasonable arrangement of working time and tasks, combined with age and other factors, to improve the health of medical staff in the region.

Objective To study the situation and influencing factors of catheter-related infection in patients with blood purification, so as to provide reference for the prevention and reduction of catheter-related infection in patients with blood purification. Methods A total of 1 781 patients receiving blood purification in the Department of Nephrology, West China Hospital, Sichuan University from January 2018 to June 2021 were selected as the research objects, the occurrence of catheter-related infection in patients was observed, univariate and multivariate analysis methods were performed on the factors that may lead to infection. Results Among 1 781 patients with blood purification, 942 were male and 839 were female. The age ranged from 37 to 76 years, with average of （65.9 ± 5.6） years. Catheter-related infection occurred in 317 cases, and the incidence rate was 17.80%. The constituent ratio of infection causes from high to low was tunnel infection （95 cases, 29.97%）, catheter colonization （89 cases, 28.08%）, export infection （70 cases, 22.08%）, and bloodstream infection （63 cases, 19.87%）. There were statistically significant differences in the incidence of catheter-related infection among patients with different ages, whether with diabetes mellitus, whether with hypoproteinemia, puncture times, indwelling catheter time, hospitalization time and application of antibiotics （all P<0.01）. Multivariate Logistic regression analysis showed that age （OR=1.706）, diabetes mellitus （OR=2.077）, hypoproteinemia （OR=1.960）, puncture times ≥2 （OR=1.283）, indwelling catheter time ≥ 1 week （OR=2.588）, hospitalization time≥ 2 weeks （OR=1.387） and application of antibiotics （OR=0.352） were the influencing factors of catheter-related infection in patients with blood purification. Conclusion The rate of catheter-related infection in patients with blood purification is high, which is related to age, diabetes mellitus, hypoproteinemia, puncture times, indwelling catheter time, hospitalization time and application of antibiotics.

Objective To study the status and influencing factors of anemia among children aged 3-12 years in Xuchang City, Henan Province, so as to provide reference for reducing the incidence of anemia and improving the health level of children aged 3-12 years in this area. Methods From June 2020 to March 2021, children aged 3-12 years with household registration in Xuchang City who received health examination in a hospital in Xuchang City were selected as the research subjects to collect their physical examination and hemoglobin detection data, and the parents of the children were given a questionnaire to collect the basic information of the children and diet-related information. Descriptive analysis method was used to analyze the occurrence of anemia among children in this area, and univariate and multivariate analysis methods were used to analyze the influencing factors of anemia. Results A total of 8 406 children aged 3-12 years were included in this study, 1 109 children with anemia were detected, and the detection rate was 13.19%. Mild anemia accounted for the highest proportion, accounting for 66.54%, followed by moderate and severe anemia, accounting for 27.48% and 6.97% respectively. Multivariate Logistic regression analysis showed that age （OR=0.694）, body mass index （thin OR=2.106）, history of anemia （OR=2.986）, premature infants （OR=1.711）, partial eclipse/picky eater （OR=2.208）, physical exercise （OR=0.879）, education level of the main caregiver （OR=0.751）, and anemia cognition of the main caregiver （OR=0.581） were the influencing factors of anemia in children aged 3-12 years in Xuchang City, Henan Province. Conclusion The anemia status of children aged 3-12 years in Xuchang City, Henan Province is affected by many factors, attention should be paid to high-risk groups of children, and targeted prevention and dietary guidance should be strengthened to help them establish good living habits and improve nutritional status, so as to reduce the incidence of anemia and improve the health level of children.

Objective To explore the current situation and influencing factors of amblyopia in preschool children in Zigong city, Sichuan province. Methods Using stratified cluster sampling method, preschool children from 8 kindergartens （4 in urban areas and 4 in suburban areas） in Zigong City, Sichuan Province were selected for amblyopia examination. The data of children and mothers were collected. The influencing factors of preschool children‘s amblyopia were analyzed by univariate and multivariate analysis methods. Results Among 943 preschool children, 468 were male and 475 were female, aged 3 - 6 years, with the median age of [4.00 （4.00, 5.00）] years old. Forty-seven cases of amblyopia were screened, and the prevalence rate was 4.98%, of which ametropic amblyopia accounted for 36.17%, anisometropic amblyopia accounted for 34.04%, strabismus amblyopia accounted for 21.28%, and form deprivation amblyopia accounted for 8.51%. Maternal smoking and alcohol consumption during pregnancy, gravidity, parity, history of children’s strabismus, premature delivery and family history of ametropia were related to the occurrence of children‘s amblyopia （P < 0.05 or P < 0.01）. Multivariate Logistic regression analysis showed that maternal smoking during pregnancy （OR=10.450）, parity ≥ 3 times （OR=3.508）, history of children’s strabismus （OR=16.877）, premature delivery （OR=4.285）, and family history of ametropia （OR=9.075） were the risk factors of amblyopia in preschool children. Conclusion The influencing factors of amblyopia in preschool children may be the history of strabismus, premature delivery, family history of ametropia, smoking during pregnancy and parity of maternal.