Objective To explore the exposure of risk factors and assess the risk of ischemic cardiovascular disease（ICVD） in the next 10 years among power grid workers, so as to provide a scientific basis for different risk types of groups to implement health management strategies. Methods The power grid workers aged 35-59 who came to Shandong Electric Power Central Hospital for physical examination were collected the age, gender, body mass index （BMI）, systolic blood pressure （SBP）, total cholesterol （TC）, smoking, diabetes and other risk factors from May to September 2018. The Chinese ICVD 10-year risk assessment form was used to predicte the 10-year risk of ICVD and perform statistical analysis. Results There were 3 049 power grid workers. The differences in the major risk factors of different genders and age groups （except BMI） were statistically significant （all P<0.01）. The total median absolute 10-year risk of ICVD in male [1.50% （P₂₅, P₇₅： 0.80%, 2.90%）] was significantly higher than that of female [0.50% （P₂₅, P₇₅： 0.30%, 0.80%）] （P<0.01）. The absolute risk of disease increased with age, and the difference in absolute risk between different age groups was statistically significant （P<0.01）. The absolute risk for male aged 55-59 and female aged 50-59 was higher than the average risk of the same age group of the same gender. The ratio of low-risk group （absolute risk： 5%~10%） and medium-high-risk group （absolute risk： ≥10%） in male was higher than that of female（both P<0.01）, respectively. Conclusion The male aged 55-59 and the female aged 50-59 are at high risk of ICVD. The main risk factors should be targeted at early detection of high-risk groups, and personalized health interventions should be carried out to prevent the occurrence of cardiovascular diseases.

Objective To analyze the Willingness to pay （WTP） for post-examination service and its influencing factors among staffs of enterprise and institution in Tianjin, so as to provide empirical basis for the development of health examination industry and policy formulation. Methods From December 2018 to May 2019, the information and data and WTP of the staffs in enterprise and institution in Tianjin were collected through questionnaire survey and conditional value inquiry method by simple random sampling, and analyzed the influencing factors by Cox regression model. Results A total of 221 staffs were surveyed, with an average age of （32.9±0.6） years,and more males（56.1%）. The median WTP was 350（P₂₅=300,P₇₅=400） yuan.The staffs who were master degree or above（HR=0.261,95%CI： 0.079-0.861）, personal payment（HR=0.365, 95%CI： 0.151-0.946）, very satisfied（HR=6.07e^-17, 95%CI： 5.14e^-18-7.17e^-16）and generally satisfied（HR=0.219, 95%CI： 0.057-0.845）with the previous post-examination services were less likely to be unwilling to pay; the staffs who generally familiar with（HR=2.949, 95%CI： 1.249-6.964） and don’t familiar with（HR=2.416, 95%CI： 1.068-5.745） the services and have generally sense（HR=3.410, 95%CI： 1.392-8.357） and weak sense（HR=18.168, 95%CI： 3.911-84.408） of belonging to work were more likely to be unwilling to pay（P<0.05）. Conclusion Staffs of enterprise and institution in Tianjin have a higher WTP for post-examination services. Educational level, whether familiar with the service, payment method, the level of previous satisfaction and the sense of belonging to work are the key factors influencing the WTP.

Objective To explore the maternal and infant outcomes of pregnancy-induced hypertension syndrome （PIH） and its influencing factors, so as to provide scientific basis for avoiding adverse delivery outcomes in special populations. Methods The PIH gravida who established prenatal health records in a hospital in Beijing from June 2017 to May 2020 and gave birth in the hospital were used as the research object to collect the relevant physiological and biochemical indicators and delivery status of PIH patients when they were diagnosed with PIH. Descriptive epidemiological analysis was used to analyze the adverse delivery outcomes of PIH gravida, and univariate and multivariate analysis methods were used to analyze the related factors of the population's adverse delivery outcomes. Results A total of 274 effective cases of gravida diagnosed with PIH was collected during the study period, aged 23-43 years old, mainly 23-34 years old, accounting for 63.87%. Primiparas accounted for 60.95%, regular obstetric checkups accounted for 94.89%, and family history of hypertension accounted for 29.93%. The incidence of adverse maternal and infant outcomes was 31.39% （86/274）, including 27 cases of placental abruption, 23 cases of postpartum hemorrhage, 8 cases of postpartum infection, 6 cases of oligohydramnios, 12 cases of fetal distress, and 10 cases of neonatal asphyxia. The degree of disease was moderate or severe （OR=2.042, 2.305）, the degree of urine protein was +++ or ++++ （OR=2.550, 2.942）, combined with hypothyroidism （OR=2.686）, a history of smoking （OR= 2.968） and those with abnormal LDL-C, HDL-C, ApoA1, VEGF, sVEGFR-1 （OR=1.446, 1.726, 1.976, 2.430, 1.774） had a higher risk of adverse maternal and infant outcomes. Gestational age at onset≥ 37 weeks （OR=0.515）, and those with delivery gestational age ≥37 weeks （OR=0.506） had a lower risk of adverse maternal and infant outcomes. Conclusion PIH patients have a higher risk of adverse delivery outcomes, and there are many factors that may affect delivery outcomes. It is recommended that the relevant risk factors of this population should be monitored and related prevention and control measures should be formulated to avoid adverse maternal and infant outcomes.

Objective To investigate the cognition of breast cancer knowledge and status of breast self-inspection among women in thyroid and breast surgery clinic. Methods Taking women who visited the thyroid and breast surgery clinic of a hospital in Huangshan City from January 2019 to April 2020 as the research subjects, the basic situation, cognition of breast cancer knowledge, and status of breast self-inspection were investigated and analyzed in the form of questionnaires. Results A total of 10 227 women in the thyroid and breast surgery clinic were surveyed, aged 20-65 years old, with an average age of （42.62±7.63） years old. The married accounted for 89.48%, and 89.88% had children. The average total score of breast cancer cognition was （85.63±8.36） points, and the rate of breast self-inspection was 20.15%. Women who were 36-49 years old （β’= 0.316）, live in the city （β’= 0.209）, with education level of high school or technical secondary school （β’= 0.166） or junior college and above （β’=0.233）, work in the medical profession （β’=0.178）, with a history of breast disease （β’=0.264）, and with family history of breast cancer （β’=0.238） had higher score of breast cancer knowledge cognition. Women who were 36-49 years old （OR=1.931）, live in the city （OR=2.073）, with education level of high school or technical secondary school （OR=1.598） or junior college and above （OR=1.774）, work in the medical profession （OR =2.156）, with a history of breast disease （OR=1.998）, had family history of breast cancer （OR=1.986）, and menarche age ≤12 years old （OR=2.210） were more likely to have breast self-inspection. Conclusion The cognition of breast cancer knowledge and status of breast self-inspection among women in thyroid and breast surgery clinic are not optimal. Medical staff and relevant departments should take intervention measures to improve the cognition of breast cancer knowledge and the status of breast self-inspection in women, which are beneficial for the prevention and early detection of breast cancer.

Objective To analyze the prevalence and influencing factors of metabolic syndrome （MS） in patients with type 2 diabetes mellitus （T2DM）, and provide reference data for related prevention and control work. Methods The patients with T2DM diagnosed from January to December in 2019 in a tertiary hospital of Zhengzhou City were selected as the research objects. The basic information of the research objects was collected and the physical examination and physiological and biochemical indexes were detected. Descriptive epidemiological analysis was used to analyze the data, and univariate and multivariate analysis methods were used to analyze the influencing factors of MS. Results A total of 1 053 patients with T2DM were included in this study, including 517 males and 536 females. The age ranged from 37 to 76 years, with an average of （58.2±6.4） years old. The BMI ranged from 18.2 to 27.9, with an average of （23.1±2.7）. The course of diabetes was 1-19 years, with an average of （9.6±3.5） years. The blood glucose control level reached the standard in 792 cases, accounting for 75.2%. There were 519 cases of MS, with a prevalence rate of 49.3%. Multivariate Logistic regression analysis showed that T2DM patients who were female （OR=2.826）, with older age（OR=2.748）, higher BMI （OR=2.208）, history of other basic diseases （OR=3.916） and family history of MS （OR=3.264） had higher risk of MS, and had higher physical exercise frequency per week （OR=0.776）, blood glucose control level reached the standard （OR=0.679） had lower risk of MS. Conclusion The prevalence of MS in patients with T2DM is at a high level, its occurrence is mainly affected by gender, age, BMI, physical exercise, blood glucose control level, other basic diseases and family history of MS, targeted interventions should be actively taken to reduce the occurrence of MS.

Objective To investigate the dietary behavior of primary and secondary school students during the home segregation of COVID-19 epidemic, so as to understand the influence of epidemic situation on dietary changes of students, and provide a reference for guiding the healthy dietary behavior of students during public health emergencies. Methods On March 3^th to 10^th, 2020, through the wjx.cn, a self-made questionnaire was used to collect general information and dietary habits of primary and secondary school students in various provinces or cities. Refer to Dietary Guidelines for Chinese Residents （2016） to determine the standards for various foods. Results A total of 1 261 questionnaires were recovered in this study, including 1 011 valid questionnaires, with an effective rate of 80.17%. The compliance rate of grain and cereal reaching the standard for primary and secondary school students reached 91.90%, and the compliance rates of vegetables, fruits, meat, aquatic products, eggs and milk were between 59.09%-88.74%, but the compliance rate of soybeans and nuts was only 43.42% and 40.69%. 40.65% of the students increased fruit intake, and 34.22% of the students increased vegetables intake, while 23.05% of the students decreased snack intake. 12.96% of the students increased the average number of meals per day, while 16.91% and 14.24% of the students who decreased the frequency of eating breakfast and night snacks. Conclusion During the home segregation of COVID-19 epidemic, the compliance rate of cereals and other foods for primary and middle school students is relatively high, but less than half of soy and nut intake meet the target. Furthermore, students’ dietary habits have changed significantly, daily intake of fruits, vegetables and grains are increased but snack’s intake is decreased.

Objective To investigate the status of bone mineral density among middle-aged and elderly women, and analyze the influencing factors. Methods Questionnaire surveys, physical examinations, physiological and biochemical index tests and bone mineral density tests were carried out on middle-aged and elderly women aged over 45 years old who had physical examination in medical examination center of a hospital in Gulou District, Nanjing during January to December 2020. Descriptive epidemiological analysis was used to analyze the detection of osteoporosis, and univariate and multivariate analysis was used to analyze the influencing factors of osteoporosis. Results In this study, a total of 8 550 middle-aged and elderly women aged 45-75 years old were surveyed, with an average age of （60.23±13.46） years old. A total of 1 303 cases of osteoporosis were detected, and the detection rate was 15.24%. The older the age （OR=1.589）, BMI < 18.5 or ≥24.0 （OR=1.044, 1.950）, menopause （OR=2.745）, abnormal serum ferritin （OR=1.754）, diabetes mellitus （OR=2.125）, chronic obstructive pulmonary disease （OR=3.108）, hypertension （OR=2.121）, hyperhomocysteinemia （OR=1.655）, the risk of osteoporosis was higher in the middle-aged and elderly women. The risk of osteoporosis in middle-aged and elderly women with hyperuricemia （OR=0.448） and more outdoor activities （OR=0.716） was lower. Conclusion The incidence of osteoporosis in middle-aged and elderly women is high. BMI, outdoor activities, abnormal serum ferritin, hyperuricemia, diabetes mellitus, chronic obstructive pulmonary disease, hypertension, and hyperhomocysteinemia are all influencing factors of osteoporosis. Relevant departments and medical staff should consciously take scientific and reasonable intervention measures for the above factors.

Objective To investigate the status and influencing factors of psychological resilience of nursing students during the COVID-19 epidemic, so as to provide empirical evidence for targeted psychological assistance. Methods Convenient sampling and snowball sampling were used to conduct the Psychological Resilience Scale, General Health Questionnaire-12, Social Support Rating Scale, and Simplified Coping Style Questionnaire through www.wjx.cn, using single factor, Pearson correlation analysis and multiple stepwise regression analysis to analyze the influencing factors of psychological resilience of nursing students. Results A total of 1 343 nursing students came from 22 provinces and cities participated in the survey, mainly in Sichuan （60.5%） and Chongqing （33.3%）, the recovery rate of the questionnaire was 99.6%. The average age was （20.52±1.46） years old, mainly women （92.3%） and end of internship （89.8%）. The total score of psychological resilience was （67.68±16.31）, scores on each dimension ranged from high to low were the strength（2.89±0.65）, resilience（2.65±0.72） and optimism （2.53±0.70）. Multiple linear regression analysis showed that nursing students who were male （standard coefficient=0.100）, had higher social support level （standard coefficient=0.116）, the positive coping style （standard coefficient=0.580）, the higher the psychological resilience level. The higher the psychological disorder score （standard coefficient=-0.143）, the lower the psychological resilience level. Conclusion The psychological resilience of nursing students during the epidemic is low. Gender, psychological disorder, social support, and coping style are important factors. Medical institutions, schools and families should provide psychological assistance to nursing students via various channel and ways to help them cope with the epidemic smoothly.

Objective To summarize the epidemiological characteristics of domestic epidemic of COVID-19 in Baiyun District, Guangzhou. Methods Information of COVID-19 cases reported in Baiyun District, Guangzhou by February 29, 2020 were extracted from Infectious Disease Information System of Chinese CDC and the case epidemiological investigation data. Demographic characteristics and epidemiological characteristics of the cases were analyzed and described. Results A total of 74 COVID-19 cases had been reported in Baiyun District during the epidemic period. The first COVID-19 case was reported on January 21 and the last was reported on February 12. Epidemic curve of the case report peaked on January 29. The cases were distributed in 14 streets/towns, with a median age of 50 （33, 64） years, mainly female （58.1%, 43/74） and domestic/unemployed/retired （63.5%, 47/74）, and the proportion of severe/critical cases was 9.5% （7/74）. The source of infection was mainly related to the history of exposure in Hubei （89.2%, 66/74）, involving 18 clusters of outbreaks, resulting in 392 close contacts and 4.3% （17/392） of close contacts who subsequently tested positive for nucleic acid. Conclusion The domestic epidemic in Baiyun District continues for 23 days, the COVID-19 cases are mainly middle/elder aged and female, most infection are related to Hubei. We still need to prevent for the possible rebound of the epidemic caused by imported cases.

Objective To analyze the epidemiological characteristics of confirmed cases of COVID-19 in Huizhou City, so as to provide scientific basis for the prevention and control of the epidemic. Methods A retrospective study was conducted to collect the data of 62 confirmed cases of COVID-19 who were admitted to Huizhou Central People's Hospital from January 19 to May 31, 2020, and the epidemiological characteristics, results of COVID-19 nucleic acid testing and hospitalization related conditions were analyzed. Results The onset of confirmed cases in Huizhou was concentrated on January 20 to February 18, 2020. The distribution of confirmed cases was 29 in Huidong County ,17 in Huicheng District, 11 in Huiyang District and 5 in Boluo County. There were 22 cases of mild type, 37 cases of common type and 3 cases of severe type, no critical severe cases. Among those cases, male to female ratio was 1∶1, aged 1-85 years old, the median of age was 46 （36, 60） years. Fifty-five cases （88.71%） had the history of travel or residence in Hubei Province, 3 cases （4.84%） had no clear contact history. No local cases were found, and most of cases were imported from Hubei Province （55 cases）, mainly were family clustering cases （45 cases）. The hospitalization days in severe cases were longer than those in mild and common cases （P<0.05）; there were no significant differences in onset ages and the first negative days of COVID-19 nucleic acid testing between the clinical classification （P>0.05）. Nine cases （14.52%） were re-positive within 6-15 days after discharge. The second time of nucleic acid conversion was shorter than that of the first time （P<0.05）. Conclusion The COVID-19 cases in Huizhou City are mainly imported from Hubei Province and clustered by families, mainly distribute in Huidong County. Cases are mainly mild and common types, the hospitalization days were related to the severity of illness.

Objective To understand the situation of online public opinion since the outbreak of COVID-19 in Guangzhou, which provide a theoretical basis for the health administration departments to respond to online public opinion of public health emergency. Methods The data of online public opinion of the epidemic situation of COVID-19 in Guangzhou were collected and analyzed from the public opinion monitoring system of China Unicom from January 22 to April 21, 2020. Results A total of 2 389.69 million pieces of online public opinion were found in monitoring system, and the top three were Micro blog （63.73%）, Client （20.63%） and We Chat （7.79%）. The change trend of daily online public opinion information was basically similar to the number of new cases per day, and correlation was found （r=0.509; After the seven-day moving average, r=0.605）. Guangzhou, Wuhan, masks, Zhong Nan-shan, nurses, police, hospital, COVID-19, China, stores, SARS, epidemic, red cross society, foreigners, epidemic prevention and control were the high frequency keywords for this outbreak. Same as Guangdong Province（6.513 2 million）, a relatively high trend of the information about the epidemic situation of Guangzhou issued by Beijing（4.573 2 million）, Jiangsu Province（1.115 6 million）, Shandong Province（1.066 3 million） and Shanghai （1.039 4 million） was found. Conclusion Micro blog will still be an important platform for online public opinion monitoring. Grasping the situation of online public opinion in the period, taking countermeasures actively to guide the steady of public opinion, which can promote the disposal of public health emergency.

Objective To investigate and analyze the cognition level, behavior and health education needs of non-medical personnel on COVID-19 in Fuling District, Chongqing City and to provide theoretical basis for improving the quality and effect of health education. Methods From 00：00 to 24：00 on March 6, 2020, the cognition, behavior and health education needs of non-medical personnel in Fuling District were investigated by snowball sampling and convenience sampling, and SPSS 26.0 software was used for Chi-square test and binary Logistic stepwise regression analysis. Results In this survey, 12 980 valid questionnaires were collected. The ratio of urban to rural population surveyed was 2.19∶1, and the ratio of male to female was 1∶1.90. The age of the respondents was mainly 37-55 years old, accounting for 67.55%。 54.95% of the respondents had high cognitive level and 64.48% had good behavior. Logistic regression analysis showed that the cognitive level of urban group （OR=1.372）, female group （OR=1.256）, high school or junior college （OR=1.977）, undergraduate and above group （OR=3.149）, civil servant group and public institution group （OR=1.284）, teacher group （OR=1.530） was high; female group （OR=1.114）, high school or junior college （OR=1.217）, undergraduate and above group （OR=1.225）, family medical staff group （OR=1.213）, high cognitive group （OR=1.968） performed well. The respondents obtained health education information mainly through Wechat（90.49%）, network media（87.55%）, and television （82.56%）. The needs for disease knowledge （85.40%）, preventive measures （84.53%） and control and prevention measures （78.71%） were higher. Conclusion In the first-level response to this COVID-19 public health emergency, the non-medical personnel’s cognitive level and behavioral performance need to be further improved. In the future health education work, the population in rural areas, people with low education background and students should be regarded as the key population of health education work