BACKGROUND:Deep venous thrombosis is one of the most common and dangerous complication. There wil be serious consequences for failing to prevent deep venous thrombosis in advance, so we need to evaluate the risk factors of deep venous thrombosis. OBJECTIVE:To evaluate the clinical risk factors for lower limb deep vein thrombosis after total hip arthroplasty. METHODS:Data of 162 patients who were treated from January 2010 to February 2013 in Department of Bone and Joint Surgery, Shenzhen Hospital of Peking University for total hip arthroplasty were analyzed retrospectively. Al patients received ultrasonography on deep veins of lower limb preoperatively and postoperatively 3 and 7 days. Risk factors of deep venous thrombosis were analyzed using Logistic regression analysis in patients undergoing total hip arthroplasty. RESULTS AND CONCLUSION:The selected factors for Logistic regression model contained bone cement prosthesis, age distribution, body mass index, and general anesthesia. Their OR values were 9.215, 11.247, 3.842, 4.825, respectively. They were risk factors for the occurrence of deep venous thrombosis. Above results indicated that use of bone cement prosthesis, age, body mass index>25 kg/m2 and general anesthesia are risk factors for deep venous thrombosis after total hip replacement, so they should cause clinical attention and we should take active measures to prevent them.

Objective: To understand the status of family sex education and associated factors among preschoolers in Wuhu, providing scientific basis for child family sex education. Methods: From July to August 2020, random cluster sampling was used to select 481 children from 5 kindergartens in Wuhu. A questionnaire survey among parents of these preschoolers regarding family sex education status and its influencing factors. Results: A total of 285(59.25%) parents reported family sex education for children, and 196(40.75%) did not practice family sex education for their children. Multivariate Logistic regression analysis showed parental awareness of sex education content(OR=3.06, 95%CI=1.95-4.78), parental anxiety for child sexual assault (OR=1.82, 95%CI=1.11-2.99) were associated with higher rate of family sex education. Conclusion Family sex education among preschoolers in Wuhu should be further promoted. Sex education training towards parents might help improve children s family sex education.

In order to understand the evolution of the diagnosis and treatment plans of corona virus disease 2019 (COVID-19), and provide convenience for medical staff in actual diagnosis and treatment, this paper uses the 9 diagnosis and treatment plans of COVID-19 issued by the National Health Commission during the period from January 26, 2020 to August 19, 2020 as research data to perform comparative analysis and visual analysis. Based on text mining, this paper obtained the text similarity and summarized its evolution law by expressing and measuring the similarity of the overall diagnosis and treatment plans of COVID-19 and the same modules, which provides reference for clinical diagnosis and treatment practice and other diagnosis and treatment plan formulation.
COVID-19 ; Data Mining ; Humans ; SARS-CoV-2